UNIVERSITY OF
COLORADO BOULDER
Norlin Library
CP161444 – LIBR – R/R
Building Electrical Services
Phase 1 of 3
CM-M12011
Specifications
March 24, 2014
Consulting Engineers
12600 West Colfax Avenue, Suite A-400
Lakewood, Colorado 80215
Ph. (303) 239-0909
University Colorado at Boulder
CM - M12011 - L1BR - R/R Building Electrical Services PH 1 of 3
March 24, 2014
CP161444 / WA-60716
100% Bid Documents
DIVISION 16
Section
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16 05 00
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16 32 00
16 36 60
16 39 00
16 41 00
16 43 00
16 44 10
16 45 00
16 99 40
Title
Basic Electrical Requirements .......................................................................
Common Work Results for Electrical ...........................................................
Wire and Cable ..............................................................................................
Duct Banks ....................................................................................................
Surge Protective Devices for Low-Voltage Electrical Power Circuits .........
Medium-Voltage Transformers .....................................................................
Medium-Voltage Cable .................................................................................
Primary Grounding ........................................................................................
Enclosed Switches and Circuit Breakers .......................................................
Metering ........................................................................................................
Switchboards .................................................................................................
Secondary Grounding ....................................................................................
Testing and Commissioning ..........................................................................
Pages
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16
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8
4
5
5
12
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INDEX - 1
University Colorado at Boulder
CM - M12011 - L1BR - R/R Building Electrical Services PH 1 of 3
March 24, 2014
CP161444 / WA-60716
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SECTION 16 01 00 – BASIC ELECTRICAL REQUIREMENTS
PART 1 – GENERAL
1.1
SUMMARY
A.
Section Includes:
1.
Provisions, Description, and Definitions
2.
Quality Assurance
3.
Work Included and Not Included
4.
Related Work Specified Elsewhere
5.
Coordination with other work
6.
Standards for Materials
7.
Prior Approval or Substitution of Equipment and Materials
8.
Code Compliance, Fees and Permits
9.
Drawings and Specifications
10. O&M Manual and Instruction
11. General Project Execution Requirements
12. Guarantee
13. Safety and Indemnity
B.
Related Sections:
1.
Division 1 - General Requirements
2.
Notice to Bidders - Substitutions
3.
Division 3 – Concrete
4.
Division 9 - Finishes
1.2
PROVISIONS
A.
The general provisions of the contract, including General and Supplementary Conditions and
General Requirements, apply to the work specified in this section.
B.
Provisions of this section shall apply to all sections of Division 16.
C.
Submit product data and shop drawings of all electrical equipment, complying with the requirements
in Division 1 and with the specific requirements of appropriate sections of Division 16
specifications.
1.3
A.
DESCRIPTION
Furnish all materials, equipment, tools, and labor and install electrical work as indicated on the
drawings and as specified herein. Connect all new facilities to be installed for a completely
coordinated and integrated electrical system. It is the intent and purpose of these contract
documents that upon completion of the project, the electrical installation, including all systems,
shall be complete and operable in all respects. Completely connect all systems, equipment, motors,
heaters, lighting fixtures, outlets, devices, etc., shown, noted, or required, from source of power to
final connections and leave ready for satisfactory operation. Furnish and install any minor items
omitted from design but obviously necessary to accomplish the above intent.
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B.
One prime electrical subcontractor shall be responsible for all materials, equipment, and labor under
Division 16.
C.
It shall be the responsibility of the Prime Contractor to coordinate the work of the electrical
contractor with the work of other contractors on the project. This shall include, but not be limited to
the responsibility for the coordination of the concrete and landscaping.
D.
All systems foreign to the electrical system shall be kept from entering or passing through electrical
rooms or over the equipment. Mechanical, control and fire suppression system shall serve the room
only.
E.
Full size set of one line drawings shall be posted in the electrical rooms of all new buildings. One
1/2 size set of electrical drawings for the building shall be installed in electrical room.
1.4
DEFINITIONS
A.
The term "Electrical Contractor" or "Contractor" used throughout Division 16 shall mean the Prime
Electrical Subcontractor, and/or the General Contractor.
B.
Instructions such as "Provide the outlets" shall mean the same as though the words "This Contractor
shall" preceded each such instruction. "Provide" shall mean "Furnish and Install."
C.
Where the words "Accepted" or "Acceptable" are used, such "Accepted" or "Acceptable" action by
the Engineer and/or Architect denotes that the work or equipment item is in conformance with the
design concept of the project and, in general, complies with pertinent information given in the
Contract Documents.
1.5
QUALITY ASSURANCE
A.
Only quality workmanship will be accepted. Haphazard or poor installation practice will be cause
for rejection of work.
B.
Where specifications call for an installation to be made in accordance with Manufacturer's
recommendations, a copy of such recommendations shall at all times be kept in job superintendent's
office and shall be available to Architect's/Engineer's and/or Owner's representative.
C.
Upon completion of work, all equipment and materials shall be installed complete, thoroughly
checked, correctly adjusted, and left ready for intended use or operation. All work shall be
thoroughly cleaned and all residue shall be removed from surfaces. Exterior surfaces of all material
and equipment shall be delivered in a perfect unblemished condition.
D.
Contractor shall provide a complete installation, including all required labor, material,
transportation, insurance, permits, and taxes.
E.
The electrical contractor shall have been registered continuously in the state of Colorado for a
minimum of five years as an electrical contractor, and shall maintain such registration in good
standing throughout the duration of the project.
F.
Verify that Medeco lock cylinders are specified in UCB Standards Division 8 for locking devices
requirement on equipment room doors for equipment specified in Division 16.
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G.
Product Data:
1.
Require shop drawings submittals on the following products to verify that material standards
are being satisfied.
a.
Circuit and motor disconnects including fuses.
b.
Medium voltage distribution equipment.
c.
Low voltage distribution equipment.
d.
Contactors.
e.
Wiring devices.
f.
Luminaires.
g.
Special systems equipment.
h.
Cabinets and enclosures.
i.
Door-indoor panelboard covers.
j.
Supporting devices.
H.
Permanent Power: Permanent power will not be turned on until all breaker settings are received and
set, the correct CT's and PT's are installed, metering is installed correctly and wired correctly,
grounding system is correctly installed, ground fault levels are properly set and all of the above is
verified by an independent testing agency, the design engineer and the University.
I.
A new breaker coordination study of a buildings distribution system shall be done for all buildings
where a new large load is added. The EOR shall give, in writing, all settings to the Contractor. The
settings shall be verified at the time of the final inspection.
J.
The electrical contractor shall perform a minimum of 50% of Division 16 work with direct
employees; the remaining work may be performed by subcontractors to the prequalified Electrical
Contractor.
K.
Within 4 weeks of shop drawing approval, the Contractor shall submit a detailed sequence of work
for review and approval by the University. This report will detail all work proposed by the
Contractor, including time sequence, tasks, responsibility, and estimated completion times. The
report will include a detailed breakdown of University/Contractor coordination checkpoints and
proposed safety measures (lockout/tag-out, grounding, tailgate meetings, etc.).
L.
Electrical Contractor shall not have any pending OSHA violations against the company at the time
of bidding.
M.
The Electrical Contractor shall guarantee that all work will be completed in accordance with the
NESC, National Electrical Code (2008), OSHA, and any other applicable codes.
1.6
A.
SPECIAL ELECTRICAL PROVISIONS
Bidding Requirements:
1.
Electrical Contractor shall give evidence of being able to be bonded to 1-1/2 times the project
value. A letter shall be provided by the bonding agency assuring capability of bonding this
level and associated rates.
2.
The successful firm shall be capable of starting work immediately upon receipt of contract
award and shall have the resources to complete the outage-related work over one weekend.
This includes the shutdown of existing equipment and installation, testing, and load transfer to
new transformers and panelboards.
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B.
Qualification Requirements:
1.
Contractors bidding this project must complete AIA Document A305-1986, “Contractor’s
Qualification Statement” and submit it with their proposal for information purposes.
2.
In addition to the information requested in paragraph1, the Contractor must provide a
statement(s) indicating that they meet the following minimum requirements:
a.
MacIntosh HD: Electrical Standards: Converted: E16010 (Word 6) List a minimum of
two projects completed in the last five years that were similar in size (or larger),
complexity and type. For each project list:
1)
Name and location of project
2)
Name, address and phone number of the client/Owner and the Owner’s
representative.
3)
Contract type (prime or subcontract) and contract value (or subcontract value).
4)
Year in which work was performed.
b.
If required list two projects on which the Contractor acted as the prime contractor (may
be the same projects listed in paragraph (a), if applicable).
c.
The firm and its operating officers (above the level of Project Manager) shall have been
involved in Electrical Contracting for at least five years.
d.
List project values (or subcontract values, if applicable) which total at least five times
job value of electrical work in the last five years completed by the firm or its operating
officers.
C.
General Requirements:
1.
The successful firm shall provide a project supervisor of proven experience, and be willing to
leave him (or her) on the project for the duration of the project, unless acceptable alternative
arrangements are made with the Owner.
2.
The successful firm must have a business office which is staffed during normal working hours
(8:00 - 5:00 Monday through Friday).
3.
The project manager of the successful firm shall have paging capability during normal
working hours.
D.
Craftsman Regulations:
1.
Contractors shall include no more than one indentured apprentice per journeyman electrician.
Apprentices shall be under the direct supervision of a licensed electrician at all times.
2.
Helpers may be assigned to the project as required to do laboring-type tasks, but may not do
any installation type electrical work.
3.
High voltage cable splicers must be certified by the Director of Facilities Management or his
(her) Designated Representative, before either cable splicing or terminating begins.
Certification must be satisfied by illustrating knowledge by a test demonstration of
capabilities. The University of Colorado at Boulder (UCB) will provide cable for test splice,
Contractor shall provide test splice kits per UCB Standard and perform splice for CU High
Voltage Department. Upon completion of requirements, a certification card will be issued by
the Department of Facilities Management.
E.
Shop Drawing Submittals: (See 16010-5 UCB Standards)
1.
Shop drawings shall be provided showing the following 1/4" scaled drawings for electrical
rooms, fault calculations and coordination. Equipment wiring diagrams indicating circuit
arrangements, bussing, size, electrical ratings, equipment dimensions, weights, equipment
arrangements, housing and proposed finishes, and NEMA rating. Equipment requiring this
information:
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CM - M12011 - L1BR - R/R Building Electrical Services PH 1 of 3
a.
b.
c.
d.
e.
f.
g.
h.
i.
F.
1.7
A.
1.8
A.
March 24, 2014
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Medium voltage distribution equipment, cable and devices.
Switchboards.
Panelboards including Door-in-Door Enclosure.
Electrical Systems Control.
Circuit and Motor Disconnects.
Contactors.
Wiring Devices.
Luminaires.
Cabinets, Enclosures and Supporting Systems.
Construction Requirements:
1.
It shall be a requirment that the Contractor have available at the job site, current information
on the following at all times:
a.
Construction Plans and Specifications
b.
Addenda.
c.
Change Orders.
d.
Submittals.
e.
Inspection Reports.
f.
Test Results.
g.
Outage Information and Requests.
h.
Electrical outages must be held to a minimum. The contractor shall submit a request
for the outage to the Owner detailing the reasons for the outage, areas affected,
sequence of procedures to accomplish work, estimated maximum length of time, the
date and time of day outage will occur. The Contractor shall ontain written
authorization from the Owner fourteen calendar days prior to all outages. Due to the
critical implications of power outages, the Owner may direct the Contractor as to the
time of day or night and date an outage may take place. The Contractor will be
responsible for any temporary power required.
i.
As-built Drawing (showing all changes).
WORK INCLUDED
Field lighting and power systems including lighting fixtures, lamps, ballasts, wiring devices,
panelboards, transformers, feeders, and other items shown or required.
1.
Provide new electrical service to the Norlin Library Building.
2.
Secondary service and distribution systems.
3.
Lighting fixtures, interior.
4.
Trenching and backfilling for electrical work.
5.
Certain equipment on this project is existing. When such is the case, description of these
items shall be indicated on drawings or described herein. Unless otherwise noted, all labor,
materials, and/or equipment for complete installation of electrical work shall be provided
under this Division.
6.
Power distribution modifications.
STANDARDS FOR MATERIALS
All materials shall conform to the current applicable industry standards. Workmanship and neat
appearance shall be as important as electrical and mechanical operation. Defective or damaged
materials shall be replaced or repaired prior to final acceptance in a manner meeting approval of
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Architect and/or Engineer and at no additional cost to Owner. The foregoing rules, standards,
regulations, specifications, recommendations, and requirements shall not relieve the Contractor
from furnishing and installing higher grades of materials and workmanship that are specified herein
or indicated on drawings.
B.
In addition to the latest federal and state regulations, the latest editions of the following standards
are minimum requirements:
1.
Underwriters' Laboratories, Inc. (UL)
2.
National Electrical Manufacturer's Association (NEMA)
3.
American National Standards Institute (ANSI)
4.
Insulated Cable Engineer's Association (ICEA)
5.
Institute of Electrical and Electronic Engineers (IEEE)
6.
Association of Edison Illuminating Companies (AEIC)
7.
National Electrical Code (NEC)
8.
Certified Ballast Manufacturers (CBM)
9.
Electrical Testing Laboratories (ETL)
10. Federal Specifications (Fed. Spec.)
11. Independent Testing Laboratories (ITL)
12. National Electrical Safety Code (NESC)
13. National Electrical Contractors Association (NECA)
14. National Fire Protection Association (NFPA)
15. Occupational Safety and Health Act (OSHA)
C.
The work shall be done in conformance with these codes and standards. These codes and standards
shall be considered as the minimum requirements for the Work. Items shown on the drawings or
specified in these Specifications which exceed the minimum requirements of the code shall be
installed as shown on the drawings or specified in these Specifications. Any known conflict
between the specifications or the drawings and the codes or suspected error in the Specifications or
the drawings shall be brought to the attention of the Architect/Engineer prior to the bid; otherwise,
resolution of the error or code conflict shall be at the expense of the Contractor.
1.9
PRIOR APPROVAL OR SUBSTITUTION OF EQUIPMENT AND MATERIALS
A.
Refer to Division 1.
B.
Equipment of other manufacturers which is equal to or superior to that specified may be proposed in
accordance with Division 1. Manufacturers and catalog numbers shown in these specifications or
on the drawings followed by "OR EQUAL" are intended as a guide to quality. Substitute equipment
of other manufacturers which is equivalent to or superior to that specified may be proposed;
however, such prior approvals must be accepted in writing by the Architect/Engineer seven days
prior to bidding. If prior approvals are not requested or granted, substitute materials and equipment
may be submitted under the substitutions section of Division 1. The Engineer's decision regarding
substitutions shall be final. It shall be the Contractor's responsibility under this division of the
specifications to notify all related trades of the accepted substitutions and to assume full
responsibility for all costs caused as a result of the substitution.
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1.10
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CODE COMPLIANCE
A.
All work and materials shall comply with the latest rules, codes, and regulations, but not limited to
the following. Code compliance is mandatory.
1.
NFPA 70 - National Electrical Code (NEC)
2.
IBC - International Building Code
3.
NFPA 101 - Life Safety Code
4.
OSHA, Occupational Safety and Health Act
5.
All other applicable federal, state and local laws and regulations
6.
NEMA
7.
IEEE
8.
NESG
9.
University Standards
10. ANSI
11. NESG
B.
Code compliance is mandatory. Nothing in these drawings and specifications permits work not
conforming to these codes. Where work is shown to exceed minimum code requirements, comply
with drawings and specifications.
C.
No work shall be concealed until after inspection and approval by proper authorities. If work is
concealed without inspection and approval, Contractor shall be responsible for all work required to
be opened or exposed and restore the concealed areas in addition to all required modifications.
1.11
DRAWINGS AND SPECIFICATIONS
A.
Refer to Supplementary Conditions for additional requirements.
B.
Drawings are diagrammatic and indicate general arrangement of circuits and outlets, locations of
switches, panelboards and other work. Drawings and specifications are complementary each to the
other, and what is called for by one shall be binding as if called for by both. Data presented on
drawings is as accurate as planning can determine, but accuracy is not guaranteed and field
verification of all dimensions, locations, levels, etc. to suit field conditions is directed. Review all
architectural and civil drawings, and adjust all work to conform to all conditions shown therein.
Architectural drawings shall take precedence over all other drawings. Discrepancies between
different drawings or between drawings and specifications or regulations and codes governing
installation shall be brought to attention prior to bid.
C.
Most direct routing of conduits and wiring is not assured. Exact requirements shall be governed by
actual conditions of the job. Consult all other drawings in preparation of the bid. Extra lengths of
wiring or addition of pull or junction boxes, etc., necessitated by such conditions shall be included
in the bid. Check all information and report any apparent discrepancies before submitting bid.
D.
Right is reserved to make reasonable change in location electrical equipment (10 feet in any
direction) prior to work without increasing contract cost.
1.12
A.
MINOR CHANGES AND DEVIATIONS
Furnish and install entire electrical installation as designed and in accordance with contract
drawings and specifications. Minor deviations necessitated by field conditions or equipment being
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supplied may be made upon approval of Architect/Engineer. Changes in design and installation
shall be done in manner as provided for in Division 1.
PART 2 – PRODUCTS
2.1
EQUIPMENT AND MATERIALS
A.
Refer to related requirements in Division 1. Furnish and install all material, equipment, and devices
which are new, first quality, of a type as listed and labeled by Underwriters Laboratories, Inc., in a
manner accepted by the Architect/Engineer, and pay for all equipment or materials damaged in the
course of installation or test. Basic bid shall include manufacturers and catalog numbers as shown
in these specifications or on the drawings with "NO EQUALS" unless specifically indicated.
Specified materials, equipment, and devices shall be furnished and installed under the contract
unless changed by mutual agreement between Contractor and Engineer. Where several
manufacturers are indicated for material, equipment, or devices, Contractor shall have choice of
manufacturers listed.
B.
Equipment Requirements: The electrical requirements for equipment specified or indicated on the
drawings are based on information available at the time of design. If equipment furnished for
installation has electrical requirements other than indicated on the electrical drawings, the
Contractor shall make all adjustments to wire and conduit size, controls, overcurrent protection, and
installation as required to accommodate the equipment supplied, without additional expense to the
Owner.
C.
All similar materials and equipment shall be the product of the same manufacturer.
D.
Materials and equipment shall be standard products of manufacturers regularly engaged in the
production of such material and shall be the manufacturer's current and standard design.
E.
All equipment and material shall be designed, constructed, and tested to operate successfully at
6,000 feet above sea level and -22°F to 104°F ambient temperature range unless otherwise specified,
with the average relative humidity of 10% to 70% unless otherwise specified.
PART 3 – EXECUTION
3.1
CONDITIONS AT SITE
A.
Prior to bidding, examine the site carefully and be fully familiar with existing conditions and be
fully informed of all utility, state, and local requirements and regulations that will affect the
electrical work.
B.
Visit to site is required of all bidders prior to submission of bid. All will be held to have
familiarized themselves with all discernible conditions, and no extra payment will be allowed for
work required because of these conditions, whether specifically mentioned or not.
C.
Existing conduits, pipes, utility lines, tanks, equipment, or other obstructions whether underground,
concealed, or exposed are not indicated on drawings. Locate such obstructions prior to start of work
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so as to route and locate all new work to void these obstructions. Repair or replace, at no cost to
Owner, existing installations where damaged during course of construction.
D.
3.2
A.
3.3
Refer to Division 1 for additional requirements.
LICENSE, FEES, AND PERMITS
Arrange for required inspections and pay all license, permit and inspection fees. Furnish a
certificate of final inspections and approval from all local authorities having jurisdiction over
electrical installation.
SERVICE INTERRUPTIONS
A.
Any electrical work that will interfere with or interrupt the operation of buildings, or services, must
be coordinated with the Owner and Contractor at least fourteen calendar days in advance for proper
scheduling. The Contractor shall submit a request for the outage to the Owner detailing the reasons
for the outage, areas affected, sequence of procedures to accomplish work, estimated maximum
length of time, and the date and time of day the outage will occur. The Contractor shall obtain
written authorization from the Owner for all proposed outages. These connections may have to be
done at any hour of any day at no increase in contract price. Outages shall be for minimum time
periods. All preparation work shall be planned and executed prior to the actual outage. In all cases,
all material shall be furnished by the Contractor. Submit written plan with time line for removal,
installation and connection of generator sets. The Contractor will be responsible for any temporary
power required.
B.
Prior to disconnecting or re-energizing power equipment (transformers, primary switches, etc.), the
Contractor shall identify and/or verify phase rotation of conductors.
3.4
RELATION WITH OTHER TRADES
A.
Contractor shall coordinate work of this section with other trades to avoid conflict and to correct
rough in and other connections for equipment furnished under other trades that required electrical
connections. Inform contractors of other trades of required clearances of accesses for or around
electrical equipment to maintain serviceability and code compliance.
B.
Verify equipment dimensions and requirements with provisions specified under this section of work,
and report any discrepancies to Architect/ Engineer in ample time to prevent delays or unwarranted
changes of work.
3.5
A.
SHOP DRAWINGS AND MATERIALS LIST
In accordance with Division 1, and as required by individual sections of Division 16, submit to
Architect/Engineer complete shop drawings, product information and materials lists as noted below,
for review within 30 days after award of contract. All proposed deviations from specifications must
be clearly listed under a prominent heading entitled "Deviations". Submittals required as follows:
1.
Materials Lists: Identifying information covering all electrical materials.
2.
Lighting Fixtures: Manufacturer's specifications sheets and ETL, ERL or ITL photometric
data.
3.
Switchboards: Shop fabrication details and technical data sheets.
4.
Transformers and switchgear: Shop fabrication details and technical data sheets.
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B.
In addition to the above requirements, equipment wiring diagrams, including circuit arrangements,
bussing, size, electrical ratings, equipment dimensions, weights, equipment arrangements, and
NEMA ratings shall be provided for all cable and devices, low-voltage switchboards, and
luminaries.
C.
Prior to submitting shop drawings for review, the Contractor shall review same and signify by
stamping and initialing, compliance with plans and specifications and for dimensional suitability for
the application. If any deviation from the specified criteria for any item of material exists, such
deviation shall be stated in writing and incorporated with the shop drawing submittal. Review of
shop drawings by the Architect/Engineer shall not constitute agreement of any deviations from the
plans and specifications unless such deviations are as specifically listed as required above, and such
deviations accepted. Review of shop drawings by the Architect/Engineer shall not relieve the
Contractor from responsibility for errors or omissions in same. Resubmittal costs beyond one are
the expense of Contractor.
3.6
RECORD DRAWINGS AND INFORMATION
A.
Refer to Division 1.
B.
Maintain a contract set of electrical drawings at the site. Neatly mark all changes and deviations
from the original drawings. Use a color that contrasts with the prints. This shall be a separate set of
drawings, not used for construction purposes, and shall be kept up to date as the job progresses and
shall be made available for inspection by the Architect/Engineer at all times. The Contractor will
also be responsible for updating the electronic drawing files. Upon completion of the contract this
set of "as-builts" and updated CAD files shall be delivered to the Architect/Engineer.
C.
In addition to the above required record drawings, maintain at all times at the project site the most
current information on the following:
1.
Addenda
2.
Change orders
3.
Submittals
4.
Inspection reports
5.
Test results
6.
Outage information
D.
Maintenance Service:
1.
As part of the service and instruction manuals for the project, the Contractor shall be required
to submit schematic diagrams and point-to-point wiring diagrams for the folling systems.
Submittal shall be in the form of blacklines, furnish reproducible copy (mylar sepia), and
AutoCAD latest version.
a.
Fire Detection/Alarm Systems
b.
Communication System
c.
Lighting-Dimming Control System
d.
Motor Control Systems
e.
Electrical Systems Control
f.
Medium Voltage Equipment
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3.7
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DELIVERY AND STORAGE OF MATERIALS
A.
Make provisions for the delivery and safe storage of all materials, including any materials furnished
by others to be installed by this Contractor. Carefully mark and store all materials. Deliver
materials to the job site in stages of the work that will expedite the work as a whole. Carefully
check materials furnished to this Contractor for installation, and provide a receipt acknowledging
acceptance of delivery and condition of the materials received. Thereafter, assume full
responsibility for its safekeeping until the final installation has been reviewed and accepted.
B.
Store materials and equipment indoors at the job site, or, if this is not possible, store on raised
platforms and protect from the weather by means of waterproof covers. Use the staging area as
shown on the drawings. Coverings shall permit circulation of air around materials to prevent
condensation of moisture. Screen or cap openings in equipment to prevent the entry of vermin.
3.8
A.
3.9
A.
3.10
A.
3.11
A.
3.12
A.
PROGRESS OF WORK
Order progress of electrical work so as to conform to progress of work of other trades, and complete
entire installation as soon as conditions permit. Assume any cost resulting from defective or illtimed work performed under this Division. The Contractor shall be liable for all additional costs
associated with increased site visits by the Engineer.
CUTTING AND PATCHING
Refer to Division 1 for additional requirements. Provide all cutting, patching, channeling, core
drilling, boring etc., necessary for electrical work. Locate holes to be drilled, light poles, etc.,
coordinate work with all other trades on the job, and make arrangements for necessary openings.
TRENCHING AND BACKFILLING
Perform all trenching and backfilling required by work performed under this Division as herein
specified and under direct supervision of General Contractor. Refer to results of subsurface soil
investigation for nature of materials to be excavated. Excavate trenches to depth required for
utilities involved. Trench bottom shall be as specified, graded true and free from stones or soft
spots. Repair any trenches where settlement occurs, and restore surface. Verify location of existing
or new utilities and, if damaged, replace at the Contractor's expense.
EQUIPMENT PADS
The Contractor shall be responsible for providing housekeeping pads (concrete) for all grade or
floor-mounted electrical equipment (i.e., pad-mounted transformers and switchgear). Concrete shall
be in accordance with the concrete section of these specifications. Pads shall be at least 3-1/2
inches high (above finished grade or finished floor) and shall be 2 inches larger, in all dimensions,
than the equipment that will sit thereon.
REMODEL WORK
All electrical equipment in existing areas to be remodeled is to be preserved and reused unless
indicated otherwise on plans.
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MANUFACTURER'S INSTRUCTIONS
A.
Where the specifications call for an installation to be made in accordance with manufacturer's
recommendations, a copy of such recommendations shall at all times be kept in the job
superintendent's office and shall be available to the Owner's representative.
B.
Follow manufacturer's instructions where they cover points not specifically indicated on drawings
and specifications. If they are in conflict with the drawings and specifications, obtain clarification
from the Architect/Engineer before starting work.
3.14
OPERATING MANUAL, PARTS LIST, INDOCTRINATION OF OPERATING, AND
MAINTENANCE PERSONNEL
A.
Furnish service of a qualified representative or supplier of each item or system itemized below who
shall instruct specific personnel, as designated by Owner, in operation and maintenance of that item
or system. Instruction shall be made when the particular system is completed and at the time as
requested by Owner.
B.
Systems:
1.
Panelboards
2.
Transformers
3.
Transformers and switchgear
C.
Refer to Division 1 for Operating Manuals and Instructions. Fully explain contents of such manuals
as a part of indoctrination, and instruct Owner's personnel in correct procedure in obtaining service
both during and after guarantee period. Operating manual and parts lists shall list complete
information as to whom Owner shall contact for service and parts. Include address and phone
number. Evidence shall be furnished that authorized service organization regularly carries a
complete stock of repair parts for the above items or system, and that the organization is available
for service. Service shall be furnished within 24 hours after request.
3.15
CLEANUP
A.
Refer to Division 1.
B.
Remove all materials, scrap, etc. relative to electrical installation, and leave premises in a clean,
orderly condition. Any costs to Owner for cleanup of site will be charged to Contractor. At
completion, all equipment, lighting fixtures, etc. shall be thoroughly cleaned and all residue
removed from the inside and outside surfaces. Defaced finish shall be refinished.
3.16
GUARANTEE
A.
Provide in accordance with the General Requirements and Division 1. Leave entire electrical
system installed under this Division in proper working order. Replace, without additional charge,
any work materials or equipment provided under this Division which develops defects within one
year from date of final acceptance of installation by Owner. Guarantee all materials and equipment
against defects in composition, design or workmanship.
B.
Furnish to the Owner a formal warranty covering the electrical system installed under this contract,
to be free from defective materials and workmanship for a period of one year after date of
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acceptance of installation by Owner. During this period provide all labor and new materials
required to repair or replace all defects to the satisfaction of the Owner at not cost to the Owner.
3.17
SAFETY AND INDEMNITY
A.
The Contractor shall be solely and completely responsible for conditions of the job site, including
safety of all persons and property during performance of the work. This requirement will apply
continuously and not be limited to normal working hours. Refer also to General Requirements.
B.
No act, service, drawing review or construction review by the Owner, the Architect, the Engineers
or their Consultants is intended to include review of the adequacy of the Contractor's safety
measures in, on, or near the construction site.
C.
At all times during performance of this Contract, properly protect work from damage and protect the
Owner's property from injury or loss. Make good any damage, injury, or loss, as may be directly
due to errors in the Bidding Documents or caused by agents or employees of the Contractor.
3.18
PROJECT CLOSEOUT
A.
Operating and Acceptance Tests:
1.
The Contractor shall hire an independent testing agency to conduct operating and acceptance
tests on new electrical system components and all existing devices that are impacted by the
project.
2.
The Testing Agency shall prepare written reports of values of all test readings and procedures.
Reports shall include all breaker settings and modifications to one line and three line
drawings.
3.
The Testing Agency shall furnish all equipment, instruments and personnel required to
conduct tests.
4.
Tests will be defined in the individual section describing the equipment or system.
B.
Punch Lists: Final payment will not be authorized until all items on the final punch list have been
completed and routine maintenance procedure and spare parts have been received. Additional
punch list completion verification visits beyond one by the Engineer shall be at the expense of the
Contractor.
C.
Cleaning and Painting: Clean all electrical equipment, such as switches, panelboards, luminaires,
etc., of construction dirt, dust, paint smears, etc., and touch-up or repaint all scars, blemishes, rust
spots, etc., to original or approved other state of finish.
D.
Operation and Maintenance Manuals:
1.
Compile a complete list of product data and shop drawings, acceptance tests, warranties,
certificates, sub-contractor and supplier information (i.e. name, address, and phone number).
E.
Guarantees and Warranties:
1.
Furnish to the Owner a formal warranty covering the electrical system installed under this
contract, to be free from defective materials and workmanship for a period of one year after
date of acceptance of installation by Owner. During this period provide all labor and new
materials required to repair or replace all defects to the satisfaction of the Owner at no cost to
Owner.
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F.
As-Built Drawings:
1.
The Contractor shall provide to the Architect/Engineer a contract set of electrical drawings
and CAD files, both hard copy and electronic copy with all CAD and clouded changes and
deviations from the original drawings.
G.
Emergency Lighting:
1.
All emergency lighting installed shall be commissioned. Commissioning shall be performed
by UCB electrical engineer and contractor by walking areas of emergency egress lighting
during non daylight hours and taking footcandle measurements. Where areas do no meet
code, emergency lighting shall be added at NO COST to the University.
END OF SECTION 16 01 00
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SECTION 16 05 00 - COMMON WORK RESULTS FOR ELECTRICAL
PART 1 – GENERAL
1.1
A.
1.2
SUMMARY
This section includes requirements for basic electrical materials and methods for the following
items:
1.
Raceways
2.
Conductors and cables
3.
Supporting devices for electrical components
4.
Electrical identification
5.
Concrete equipment bases
6.
Electrical demolition
7.
Cutting and patching for electrical construction
8.
Touch-up painting
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this section.
B.
Related Sections:
1.
Section 01045 - Cutting and Patching
2.
Section 02225 - Trenching, Excavation and Backfill
3.
Section 03300 - Cast-in-Place Concrete; Protective envelope for underground conduit
installations.
4.
Section 07620 - Sheet Metal Flashing and Trim
5.
Section 02400 - Underground Utility Construction
1.3
A.
REFERENCES
The latest edition of the following standards and codes, standard publications of professional
organizations, and the local authorities having jurisdiction are the minimum requirements for this
work.
1.
American National Standards Institute (ANSI)
2.
American Society for Testing and Materials (ASTM)
3.
Association of Edison Illuminating Companies (AEIC)
4.
Code of Federal Regulations (CFR)
5.
Insulated Cable Engineer's Association (ICEA)
6.
Institute of Electrical and Electronic Engineers (IEEE)
7.
National Electrical Manufacturer's Association (NEMA)
8.
National Fire Protection Association (NFPA)
9.
NFPA 70, The National Electrical Code (NEC)
10. Underwriters' Laboratories, Inc. (UL)
11. State, City, and Local Authorities
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DEFINITIONS
A.
Instructions such as "Provide" shall mean the same as though the words "This Contractor shall"
preceded each such instruction. "Provide" shall mean "Furnish and Install." Where the words
"Accepted" or "Acceptable" are used, such "Accepted" or "Acceptable" action by the Engineer
and/or Architect denotes that the work or equipment item is in conformance with the design concept
of the project and, in general, complies with pertinent information given in the Contract Documents.
B.
EMT: Electrical metallic tubing.
C.
ENT: Electrical nonmetallic tubing.
D.
FMC: Flexible metal conduit.
E.
IMC: Intermediate metal conduit.
F.
LFMC: Liquidtight flexible metal conduit.
G.
LFNC: Liquidtight flexible nonmetallic conduit.
H.
RMC: Rigid metallic conduit.
I.
RNC: Rigid nonmetallic conduit.
J.
PVC: Coated rigid metal conduit.
1.5
SUBMITTALS
A.
Product Data:
1.
Hangers and supports
2.
Electrical identification materials
3.
Raceways and fittings
4.
Conductors and Cable
B.
Coordination Drawings: Plans, sections, and elevations drawn to scale and coordinating installation
of equipment, where required by the contract drawings or where site physical conditions limit
installation capabilities.
1.6
QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B.
Comply with NFPA 70, the National Electrical Code.
C.
All equipment and materials will be new and unused and shall be in conformance with the current
applicable industry standards. Workmanship and neat appearance shall be as important as electrical
and mechanical operation. Defective or damaged materials shall be replaced or repaired prior to
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final acceptance in a manner meeting approval of Architect and/or Engineer and at no additional
cost to the Owner.
1.7
SEQUENCING
A.
Coordinate chases, slots, inserts, sleeves, and openings with general construction work and arrange
in building structure during progress of construction to facilitate the electrical installation.
B.
Set inserts and sleeves in poured-in-place concrete, masonry work, and other structural components
as they are constructed.
C.
Sequence, coordinate, and integrate installing electrical materials and equipment for efficient flow
of the Work. Coordinate installing large equipment requiring positioning before closing in the
building.
D.
No work shall be concealed until after inspection and approval by proper authorities. If work is
concealed without inspection and approval, Contractor shall be responsible for all work that is
required to expose and restore the concealed work in addition to all required modifications.
E.
Where electrical identification devices are applied to field-finished surfaces, coordinate installation
of identification devices with completion of finished surface.
F.
Where electrical identification markings and devices will be concealed by acoustical ceilings and
similar finishes, coordinate installation of these items before ceiling installation.
PART 2 - PRODUCTS
2.1
RACEWAYS
A.
Metallic Conduit Systems:
1.
EMT: ANSI C80.3, zinc-coated steel. EMT shall be galvanized on the outside and coated on
the inside with a hard smooth lacquer finish. EMT fittings shall be set-screw type. EMT shall
comply with UL 797 and ANSI C80.3. All exterior fittings shall be steel compression.
2.
FMC: Flexible metal conduit shall be galvanized steel with steel fittings and shall comply
with UL 1. Fittings shall be compression type. (squeeze type)
3.
IMC: ANSI C80.6, zinc-coated steel, with threaded fittings. Intermediate steel conduit shall
be hot-dipped galvanized.
4.
LFMC: Zinc-coated galvanized steel with sunlight-resistant and mineral-oil-resistant plastic
jacket. Liquidtight Flexible Steel conduit shall comply with UL 514C. Liquid and moisture
tight conduit shall be American Brass with Appleton "ST" connectors or approved equal with
ground continuity.
5.
RMC: Rigid Steel Conduit shall be galvanized and shall comply with UL 6 and ANSI C80.1.
Plastic-coated conduit shall be rigid galvanized steel conduit having a 0.030-inch minimum
thick factory-bonded PVC jacket, using pre-jacketed couplings as manufactured by Pittsburgh
Robroy, Plastic Applicator, Occidental, or approved equal.
B.
Nonmetallic Conduit Systems:
1.
ENT: NEMA TC 13
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RNC: NEMA TC 2, Schedule 40 or 80 PVC
LFNC: UL 1660
ENT and RNC fittings: NEMA TC3, match to conduit or conduit/tubing type and material
Impregnated fiber duct (underground)
C.
Raceway Fittings: Specifically designed for the raceway type with which used.
D.
Prohibited Materials:
1.
Use of aluminum conduit is specifically prohibited unless special permission is given by
Department of Facilities Management.
2.
Use of extra-flexible, non-labeled conduit is prohibited.
3.
ENMT (or Electrical Non-Metallic Tubing) is prohibited.
4.
MC Cable is prohibited.
5.
Use of caddy 8/ZMB/8 to support conduit is prohibited.
2.2
CONDUCTORS AND CABLES
A.
UL-listed building wires and cables with conductor material, insulation type, cable construction, and
rating as specified in Part 3 "Wire and Insulation Applications."
B.
Rubber Insulation Material: Comply with NEMA WC 3.
C.
Thermoplastic Insulation Material: Comply with NEMA WC 5.
D.
Cross-Linked Polyethylene Insulation Material: Comply with NEMA WC 7.
E.
Ethylene Propylene Rubber Insulation Material: Comply with NEMA WC 8.
F.
Conductor Material: Copper.
G.
Conductors and Cables:
1.
All conductors shall be new, unless otherwise noted. All conductors #8 AWG and larger shall
be stranded. Conductors #10 and smaller may be solid or stranded depending on their
application.
2.
Secondary voltage conductors and cables shall be electrical grade, annealed copper, tinned if
rubber insulated, and fabricated in accordance with ASTM and ICEA standards. The use of
aluminum is prohibited except where shown on one-line or equipment schedules. Minimum
size #12 for branch circuits; #14 for control wiring. Conductor types shall be as follows:
a.
In sizes #1/0 AWG and larger: Cross-linked polyethylene insulation type XHHW (75 to
90°C) or THWN/THHN.
b.
In sizes #1 AWG and smaller: All conductors shall have heat/moisture resistant
thermoplastic insulation type THW or THWN (75°C), except as follows:
1)
Where conduit temperature will exceed 100°F, use type THHN (90°C). Type
XHHW (90°C) permissible in dry locations.
2)
Motor circuit conductors: 75° THWN or XHHW from disconnect to motor.
3)
In 120-volt incandescent fixtures, type AF (150°C).
4)
In wireways of fluorescent lighting fixtures types THWN/THHN/MTW (90°C).
5)
Handling cord drops and cord connections: Type "SO" cord.
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6)
c.
H.
2.3
Conductors in 120 volt circuits longer than 100 feet or 277 volt circuits longer
than 200 feet shall not be less than #10 AWG.
All wiring for control circuits to contactors, pushbuttons, and the like, shall be #12
AWG, copper, stranded with THWN insulation.
Wire Connectors and Splices: Units of size, ampacity rating, material, type, and class suitable for
service indicated.
SUPPORTING DEVICES FOR ELECTRICAL COMPONENTS
A.
Provide hangers and supports to support raceways, fixtures, cabinets, boxes, etc. as manufactured by
B-Line, Unistrut, Binkley or Kindorf.
B.
Material: Cold-formed steel, with corrosion-resistant coating acceptable to authorities having
jurisdiction.
C.
Metal Items for Use Outdoors or in Damp Locations: Steel, hot-dip galvanized after fabrication.
D.
Slotted-Steel Channel Supports: Flange edges turned toward web, and 9/16-inch-diameter slotted
holes at a maximum of 2 inches o.c., in webs.
E.
Raceway and Cable Supports: Manufactured clevis hangers, riser clamps, straps, threaded C-clamps
with retainers, ceiling trapeze hangers, wall brackets, and spring-steel clamps or click-type hangers.
F.
Pipe Sleeves: ASTM A 53, Type E, Grade A, Schedule 40, galvanized steel, plain ends.
G.
Expansion Anchors: Carbon-steel wedge or sleeve type.
H.
Toggle Bolts: All-steel springhead type.
2.4
ELECTRICAL IDENTIFICATION
A.
Identification Devices: A single type of identification product for each application category. Use
colors prescribed by ANSI A13.1, NFPA 70, and these Specifications.
1.
As a minimum, identification means shall be installed on the following:
a.
Panelboards, switchboards, switchgear, etc.
b.
Transformers
c.
Junction boxes
d.
Disconnects
e.
Cables
f.
Identify all raceways with voltage over 1000 volts with warning signs.
B.
Colored Adhesive Marking Tape for Wires, and Cables: Self-adhesive vinyl tape, not less than 1
inch wide by 3 mils thick.
C.
Underground Warning Tape: Permanent, bright-colored, continuous-printed, vinyl tape with the
following features:
1.
Not less than 6 inches wide by 4 mils thick.
2.
Compounded for permanent direct-burial service.
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Embedded continuous metallic strip or core.
Printed legend that indicates type of underground line.
D.
Color-Coding Cable Ties: Type 6/6 nylon, self-locking type. Colors to suit coding scheme.
E.
Engraved-Plastic Labels, Signs, and Instruction Plates: Engraving stock, melamine plastic laminate
punched or drilled for mechanical fasteners 1/16-inch minimum thickness for signs up to 20 sq. in.
and 1/8-inch minimum thickness for larger sizes. Engraved legend in black letters on white
background.
F.
Interior Warning and Caution Signs: Comply with 29 CFR, Chapter XVII, Part 1910.145.
Preprinted, aluminum, baked-enamel-finish signs, punched or drilled for mechanical fasteners, with
colors, legend, and size appropriate to the application.
G.
Exterior Warning and Caution Signs: Comply with 29 CFR, Chapter XVII, Part 1910.145.
Weather-resistant, nonfading, preprinted, cellulose-acetate butyrate signs with 0.0396-inch,
galvanized steel backing, with colors, legend, and size appropriate to the application; 1/4-inch
grommets in corners for mounting.
H.
Fasteners for Nameplates and Signs: Self-tapping, stainless-steel screws or No. 10/32 stainless-steel
machine screws with nuts and flat and lock washers.
2.5
A.
2.6
CONCRETE EQUIPMENT BASES
Concrete: 3000-psi, 28-day compressive strength.
TOUCH-UP PAINT
A.
Equipment: Equipment manufacturer's paint selected to match installed equipment finish.
B.
Galvanized Surfaces: Zinc-rich paint recommended by item manufacturer.
PART 3 - EXECUTION
3.1
ELECTRICAL EQUIPMENT INSTALLATION
A.
Headroom Maintenance: If mounting heights or other location criteria are not indicated, arrange and
install components and equipment to provide the maximum possible headroom.
B.
Materials and Components: Install level, plumb, and parallel and perpendicular to other building
systems and components, unless otherwise indicated.
C.
Equipment: Install to facilitate service, maintenance, and repair or replacement of components.
Adhere to clearances required by the NEC, NFPA 70. Connect for ease of disconnecting, with
minimum interference with other installations.
D.
Right of Way: Give to raceways and piping systems installed at a required slope.
E.
Conduit Sizing, Arrangement and Support:
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5.
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Conduit Size:
a.
For "power" receptacle circuits, the minimum conduit size shall be 3/4" in all buildings.
For lighting circuits the minimum conduit size shall be 3/4".
b.
Size conduit (for receptacle circuits, motor circuits, other circuits delivering power to
devices who's utilization is not producing light, and panelboard feeds only to meet
requirements of National Electrical Code insulation type RH, RHW, RHH. Lighting
circuits shall comply with appropriate insulation fill tables.
Flexible Conduit Size:
a.
Minimum flexible conduit size shall be 3/4" with exception for a 6' maximum length
whip from j-box to light fixture may be 1/2".
b.
For power circuits, in compliance with 3.01.A.1.
c.
Maximum length of flexible conduit is 3' except for connections to lighting equipment
which may be up to 6' maximum length.
d.
3/8" flexible conduit is permitted if furnished as part of the a manufactured equipment
connection (including lighting equipment).
Conduit Straps and Hangers:
a.
Heavy-duty malleable iron or steel.
b.
For locations above grade which are subject to moisture or corrosion, specify corrosion
resisting steel.
c.
Perforated pipe strap or wire hangers are not permitted.
d.
Support conduits above suspended ceilings from building structure by suitable hangers.
Supporting conduits from ceiling suspension wires is not permitted.
e.
Use of caddy for conduit support is not permitted.
Conduit Racks:
a.
For electrical conduit use only.
b.
Multi-use suspension systems for plumbing and other piping along with electrical
conduits may be used if designed for that purpose.
Conduit Anchors:
a.
Plastic or fiber expansion anchors are prohibited.
b.
Powder activated anchors are allowed.
RACEWAY APPLICATION
A.
Use the following raceways for outdoor installations:
1.
Exposed: IMC
2.
Concealed: IMC
3.
Underground, Single Run: RNC
4.
Underground, Grouped: RNC
5.
Connection to Vibrating Equipment: LFMC
6.
Boxes and Enclosures: NEMA 250, Type 3R or Type 4
B.
Use the following raceways for indoor installations:
1.
Exposed: EMT
2.
Concealed: EMT
3.
Connection to Vibrating Equipment: FMC; except in wet or damp locations, use LFMC
4.
Damp or Wet Locations: IMC
5.
Embedded in concrete: IMC or RMC
6.
Boxes and Enclosures: NEMA 250, Type 1, unless otherwise indicated
7.
Damp or wet locations: NEMA 250, Type 4, nonmetallic
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RACEWAY INSTALLATION
A.
Conceal raceways, unless otherwise indicated, within finished walls, ceilings, and floors.
B.
Install raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes.
Locate horizontal raceway runs above water and steam piping.
C.
Use temporary raceway caps to prevent foreign matter from entering.
D.
Stub-up Connections: Extend conduits through concrete floor for connection to freestanding
equipment. Install with an adjustable top or coupling threaded inside for plugs set flush with the
finished floor. Extend conductors to equipment with rigid steel conduit; FMC may be used 6 inches
above the floor. Install screwdriver-operated, threaded flush plugs flush with floor for future
equipment connections. Arrange so that curved portion of bends is not visible above the finished
slab.
E.
Install raceways embedded in slabs in middle third of slab thickness where practical, and leave at
least 1-inch concrete cover.
1.
Secure raceways to reinforcing rods to prevent sagging or shifting during concrete placement.
2.
Space raceways laterally to prevent voids in concrete.
3.
Install conduit larger than 1-inch trade size parallel to or at right angles to main reinforcement.
Where conduit is at right angles to reinforcement, place conduit close to slab support.
4.
Transition from nonmetallic tubing to Schedule 80 nonmetallic conduit, rigid steel conduit, or
IMC before rising above floor.
5.
Make bends in exposed parallel or banked runs from same centerline to make bends parallel.
Use factory elbows only where elbows can be installed parallel; otherwise, provide field bends
for exposed parallel raceways.
F.
Make conduit bends and offsets so ID is not reduced. Keep legs of bends in the same plane and
straight legs of offsets parallel, unless otherwise indicated.
G.
Use raceway fittings compatible with raceways and cables and suitable for use and location.
H.
Install pull wires in empty raceways. Use No. 14 AWG zinc-coated steel or monofilament plastic
line with not less than 200-lb. tensile strength. Leave at least 12 inches of slack at each end of the
pull wire.
I.
Install telephone and signal system raceways, 2-inch trade size and smaller, in maximum lengths of
150 feet and with a maximum of two 90-degree bends or equivalent. Separate lengths with pull or
junction boxes where necessary to comply with these requirements, in addition to requirements
above.
J.
Connect motors and equipment subject to vibration, noise transmission, or movement with a
maximum of 72-inch flexible conduit. Install LFMC in wet or damp locations. Install separate
ground conductor across flexible connections.
K.
Set floor boxes level and trim after installation to fit flush to finished floor surface.
L.
Conduit Installation - Interior:
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10.
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All surface mounted conduit routing must be submitted to Campus EE for review and
approval prior to installation. There will be no cost to the University for rework if installed
without written approval of Campus EE.
Rigid Metal Conduit: Shall be used or specified for the following locations:
a.
Corrosive and/or hazardous locations. Provide plastic jacket or coating in corrosive
installation and coming out of slabs.
b.
Surface mounted conduits on pads or floors of mechanical rooms.
c.
All 90 degree elbows installed in the slab or underground.
Intermediate Metal Conduit: Specify as an optional material for all rigid, galvanized
installations. Obtain special permission from Department of Facilities Management prior to
allowing this material to be installed.
Electrical Metallic Tubing: Shall be used or specified for the following locations:
a.
Interior partitions.
b.
Above ceilings.
c.
Prohibited in hazardous or corrosive areas.
d.
Exterior walls, above grade.
e.
Prohibited in concrete slabs or walls.
f.
Prohibited below grade.
Flexible Metal Conduit: Specify for the following locations:
a.
Motor final connections.
b.
Transformer final connections.
c.
Mechanical equipment final connections.
d.
Lighting equipment final connections.
Liquid Tight Flexible Metal Conduit: Specify for the following locations:
a.
Outdoor installations.
b.
Damp or wet installations.
c.
Corrosive installations.
d.
Motors in wet, damp locations or subject to oil drip.
e.
Final 3 foot connection to all sprinkler and preaction valves.
Non-Metallic Conduit: Prohibited for interior use, allowed in concrete slabs and walls.
Expansion Joints: Specify suitable expansion fitting where conduits cross expansion joints.
Specify steel fittings which provide grounding continuity.
Incompatible Materials: Do not permit use of dissimilar metal fittings on raceway systems.
All fittings and conduits must be compatible.
All surface mounted conduit shall be painted to match surface mounted upon. Use paint
appropriate for conduit application.
Label all conduits, i.e. Power 120/208, Lighting 277, telecom, control.
Conduit Installation - Exterior
1.
All surface mounted conduit routing must be submitted to Campus EE for review and
approval prior to installation. There will be not cost to the University for rework if installed
without written approval of Campus EE.
2.
Underground Raceways (Ducts) General Requirements:
a.
Cross ducts below gas piping.
b.
Slope ducts to manholes.
c.
Locate top of duct banks below frost line or at 36" below finish grade, whichever is
deeper.
d.
Route ducts as straight as possible between points.
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e.
3.
4.
5.
6.
Specify reinforcing rods in concrete encasement for all duct banks. Specify a rebar 4bar cage.
f.
Specify approved nylon conduit spacers for multiple conduit runs in same trench (duct
banks).
g.
Require that each raceway be proved clean, clear and useable. A #12 solid copper pull
wire shall be installed in all spare conduits. Specify duct plugs for finished raceways.
h.
Specify that backfill material used to fill in above and around duct bank be clean and
free of stones within 6 inches.
i.
Concrete blocks are prohibited for duct spacers.
j.
Specify nylon tie downs to hold conduits to spacers.
k.
Electrically conductive duct tie downs are prohibited.
l.
Where duct banks enter buildings, manholes, etc., require minimum 4 #2 rebar dowels
to prevent shearing of ducts. Penetrations shall be sized no more than 1 inch larger than
the outside diameter of the conduit and sealed with Sikaflex 1A or equivalent.
m. Specify plastic warning tape at 18" below grade.
n.
All elbows shall be rigid PVC coated.
Underground Primary Raceways (Ducts): Specify the following:
a.
Electrical non-metallic conduit encased in red concrete. Schedule 40 PVC or fiber
reinforced epoxy.
b.
Transition duct to PVC coated rigid metal conduit 5' from building outside wall.
c.
Standard conduit size 6'" in all ducts. Also provide one empty 2" communication
conduit in all duct banks from transformer to building.
d.
Provide red color additive to concrete for identification (entire duct bank shall be red).
Provide colorant consisting of an integral red-oxide pigment in the proportion of 8
pounds per cubic yard of concrete.
e.
Provide PVC coated rigid metal conduit or filament wound reinforced epoxy conduit
with minimum 36 inch radius and for any bends 30 degrees and larger, as manufactured
to comply with the specifications in the latest revisions of NEMA TC 2002 and UL
1684.
f.
3" wide, yellow, polyethylene film tape for buried cable marker. Bury 1' - 0" above high
voltage conduit. Require wording "Danger-High Voltage Cable" or similar.
g.
Pull mandrel through all primary ducts to verify duct integrity.
h.
Provide 50% spare conduits. (Verify quantity with UCB Utility Services).
i.
Provide direct burial #12 solid copper insulated copper tracer wire.
j.
Provide snakepit magnetized tracer box. See Section 02400.
Underground Secondary Raceways: Specify the following:
a.
Electrical non-metallic conduit.
b.
Transition duct to PVC coated rigid metal conduit 5' from building outside wall and
sealed per Section 16110-3.01-C-L.
c.
Provide steel bends with PVC coating.
Underground Communication Raceways. Telecom raceway shall comply with 16700.
Specify the following:
a.
Electrical non-metallic conduit.
b.
Transition to PVC coated rigid metal conduit 5' from building outside wall.
c.
Standard conduit size 4".
d.
Provide steel bends (minimum 36" radius) with PVC coating.
Small Underground Raceways: Specify the following:
a.
Schedule 40 PVC non-metallic conduit.
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b.
PVC non-metallic conduit fittings must be installed with solvent applied couplings.
c.
Conduit shall be minimum 24" below finish grade.
Manholes: Where manholes are required in underground raceway systems, the following
general requirements apply:
a.
Locate manholes to provide workable pulling tensions.
b.
Size manholes to provide suitable working clearances for pulling, termination, and
splicing. Minimum size manhole is 10' x 10' x 6'-6" high.
c.
Specify round 36" diameter, heavy duty, manhole covers with "Electric" or "Telephone"
cast in cover as required. Cover shall have welded manhole identification numbers as
directed by utility services.
d.
Specify 36" round access chimney with climbing rings.
e.
Specify appropriate manhole hardware, including galvanized pulling eyes, inserts, cable
racks and driven copper clad ground rod. Seal ground rod penetration in manhole with
epoxy grout.
f.
Require grounding of all metal parts in manhole and ground rod to 1/0 AWG primary
ground system.
g.
Provide minimum 12" diameter x 2' deep sealed sump well in floor of manhole to collect
water seepage.
h.
Provide a 10' driven accessible ground rod in manhole and seal penetration.
1)
Dot not install ground rod in sealed pumpwell.
2)
With the intent of maintaining a closed water resistant duct and manhole system
all manholes shall have a 12" x 12" x 2' concrete pump pit located in the center of
the vault floor. This pit shall be completely encased in concrete and integral to
the vault. All duct penetrations shall be sealed on the outside with Sikaflex 1A
sealant or equivalent. Spare penetrations and ground rods shall also be sealed
with the same. These requirements are for both poured in place and precast
vaults. Sealing compound shall be used between all concrete joints, cap and
chimney.
WIRING METHODS FOR POWER, LIGHTING, AND CONTROL CIRCUITS
A.
Feeders: Type THHN/THWN insulated conductors in raceway.
B.
Underground Feeders and Branch Circuits:
conductors in raceway.
C.
Branch Circuits: Type THHN/THWN insulated conductors in raceway.
D.
Remote-Control Signaling and Power-Limited Circuits: Type THHN/THWN insulated conductors
in raceway for Classes 1, 2, and 3, unless otherwise indicated.
3.5
A.
Type THWN or single-wire, Type UF insulated
WIRING INSTALLATION
Install splices and taps that are compatible with conductor material and that possess equivalent or
better mechanical strength and insulation ratings than unspliced conductors.
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ELECTRICAL SUPPORTING DEVICE APPLICATION
A.
Damp Locations and Outdoors: Hot-dip galvanized materials or nonmetallic, U-channel system
components.
B.
Dry Locations: Steel materials
C.
Support Clamps for PVC Raceways: Click-type clamp system
D.
Selection of Supports: Comply with manufacturer's written instructions.
E.
Strength of Supports: Adequate to carry present and future loads, times a safety factor of at least
four; minimum of 200-lb. design load.
3.7
SUPPORT INSTALLATION
A.
Install support devices to securely and permanently fasten and support electrical components.
B.
Install individual and multiple raceway hangers and riser clamps to support raceways. Provide Ubolts, clamps, attachments, and other hardware necessary for hanger assemblies and for securing
hanger rods and conduits.
C.
Support parallel runs of horizontal raceways together on trapeze- or bracket-type hangers.
D.
Size supports for multiple raceway installations so capacity can be increased by a 25 percent
minimum in the future.
E.
Support individual horizontal raceways with separate, malleable-iron pipe hangers or clamps.
F.
Install 1/4-inch-diameter or larger threaded steel hanger rods, unless otherwise indicated.
G.
Spring-steel fasteners specifically designed for supporting single conduits or tubing may be used
instead of malleable-iron hangers for 1-1/2-inch and smaller raceways serving lighting and
receptacle branch circuits above suspended ceilings and for fastening raceways to slotted channel
and angle supports.
H.
Arrange supports in vertical runs so the weight of raceways and enclosed conductors is carried
entirely by raceway supports, with no weight load on raceway terminals.
I.
Simultaneously install vertical conductor supports with conductors.
J.
Separately support cast boxes that are threaded to raceways and used for fixture support. Support
sheet-metal boxes directly from the building structure or by bar hangers. If bar hangers are used,
attach bar to raceways on opposite sides of the box and support the raceway with an approved
fastener not more than 24 inches from the box.
K.
Install metal channel racks for mounting cabinets, panelboards, disconnect switches, control
enclosures, pull and junction boxes, transformers, and other devices unless components are mounted
directly to structural elements of adequate strength.
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L.
Install sleeves for cable and raceway penetrations of concrete slabs and walls unless core-drilled
holes are used. Install sleeves for cable and raceway penetrations of masonry and fire-rated gypsum
walls and of all other fire-rated floor and wall assemblies. Install sleeves during erection of
concrete and masonry walls.
M.
Securely fasten electrical items and their supports to the building structure, unless otherwise
indicated. Perform fastening according to the following unless other fastening methods are
indicated:
1.
Wood: Fasten with wood screws or screw-type nails.
2.
Masonry: Toggle bolts on hollow masonry units and expansion bolts on solid masonry units.
3.
New Concrete: Concrete inserts with machine screws and bolts.
4.
Existing Concrete: Expansion bolts.
5.
Threaded studs driven by a powder charge and provided with lock washers in existing
concrete are not allowed unless approved by Architect.
6.
Steel: Welded threaded studs or spring-tension clamps on steel. Field welding shall comply
with AWS D1.1.
7.
Welding to steel structure may be used only for threaded studs, not for conduits, pipe straps,
or other items.
8.
Light Steel: Sheet-metal screws.
9.
Fasteners: Select so the load applied to each fastener does not exceed 25 percent of its prooftest load.
3.8
IDENTIFICATION MATERIALS AND DEVICES
A.
All components of electrical system shall be neatly and accurately labeled to facilitate ready
identification and service. Temporary type of markings, which are visible on equipment, will not be
permitted. Repaint trims, housing, etc. where such markings cannot be readily removed. Defaced
finish must be refinished. Provide labels as follows (or indicated elsewhere):
1.
Provide engraved composition nameplates having 3/8 inch minimum height, white letters
engraved in a black face for each switch or circuit breaker in switchboards and subdistribution
boards. Provide labeling of matching style designating all units as designated on drawings.
Secure all lamenoid nameplates with rivets or screws. Adhesives will not be allowed.
2.
Use of Dymolabels for panels and circuit number identification on all disconnect switches in
mechanical and equipment rooms is forbidden.
3.
Provide engraved composition nameplates on all disconnect switches. Lettering shall be 3/8
inches minimum height for equipment. Labeling for equipment shall be in accordance with
designations given on the associated drawings.
B.
Coordinate names, abbreviations, colors, and other designations used for electrical identification
with corresponding designations indicated in the Contract Documents or required by codes and
standards. Install at locations for most convenient viewing without interference with operation and
maintenance of equipment. Use consistent designations throughout Project.
1.
Bands: Pretensioned, snap-around, colored plastic sleeves or colored adhesive marking tape.
Make each color band 2 inches wide, completely encircling conduit, and place adjacent bands
of two-color markings in contact, side by side.
2.
Band Locations: At changes in direction, at penetrations of walls and floors, at 50-foot
maximum intervals in straight runs, and at 25-foot maximum intervals in congested areas.
3.
Colors:
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Fire Alarm System: Red
Security System: Blue and yellow
Telecommunication System: Green and yellow
C.
Tag and label each feeder conductor (having an operating voltage of 600 volts or less) in pullboxes
with an engraved, non-metallic tag, having 3/16-inch minimum height letters. Tag shall be a
minimum of one inch diameter or square. State circuit number and phase (A, B, C).
D.
Install continuous underground plastic markers during trench backfilling, for exterior underground
power, control, signal, and communication lines located directly above power and communication
lines. Locate 6 to 8 inches below finished grade. If width of multiple lines installed in a common
trench or concrete envelope does not exceed 16 inches, overall, use a single line marker.
E.
Color-code 208/120V system secondary service, feeder, and branch-circuit conductors throughout
the secondary electrical system as follows:
1.
Phase A: Black
2.
Phase B: Red
3.
Phase C: Blue
4.
Neutral: White
5.
Ground: Green
F.
Color-code 480/277V system secondary service, feeder, and branch-circuit conductors throughout
the secondary electrical system as follows:
1.
Phase A: Brown
2.
Phase B: Orange
3.
Phase C: Yellow
4.
Neutral: White with a colored stripe or gray
5.
Ground: Green
G.
Install warning, caution, and instruction signs where required to comply with 29 CFR,
Chapter XVII, Part 1910.145, and where needed to ensure safe operation and maintenance of
electrical systems and of items to which they connect. Install engraved plastic-laminated instruction
signs with approved legend where instructions are needed for system or equipment operation.
Install metal-backed butyrate signs for outdoor items.
3.9
A.
3.10
A.
FIRESTOPPING
Apply firestopping to cable and raceway penetrations of fire-rated floor and wall assemblies to
achieve fire-resistance rating of the assembly.
CONCRETE BASES
Construct concrete bases of dimensions indicated, but not less than 4 inches larger, in both
directions, than supported unit.
Follow supported equipment manufacturer's anchorage
recommendations and setting templates for anchor-bolt and tie locations, unless otherwise indicated.
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DEMOLITION
A.
Protect existing electrical equipment and installations indicated to remain. If damaged or disturbed
in the course of the Work, remove damaged portions and install new products of equal capacity,
quality, and functionality.
B.
Accessible Work: Remove exposed electrical equipment and installations, indicated to be
demolished, in their entirety.
C.
Abandoned Work: Cut and remove buried raceway and wiring, indicated to be abandoned in place,
2 inches below the surface of adjacent construction. Cap raceways and patch surface to match
existing finish.
D.
Remove demolished material from Project site. Coordinate with Owner for any materials to be
salvaged.
E.
Remove, store, clean, reinstall, reconnect, and make operational components indicated for
relocation.
3.12
CUTTING AND PATCHING
A.
Cut, channel, chase, and drill floors, walls, partitions, ceilings, and other surfaces required to permit
electrical installations. Perform cutting by skilled mechanics of trades involved.
B.
Repair and refinish disturbed finish materials and other surfaces to match adjacent undisturbed
surfaces. Install new fireproofing where existing firestopping has been disturbed. Repair and
refinish materials and other surfaces by skilled mechanics of trades involved.
3.13
A.
3.14
A.
FIELD QUALITY CONTROL
Inspect installed components for damage and faulty work, including the following:
1.
Raceways
2.
Conductors and cables
3.
Supporting devices for electrical components
4.
Electrical identification
5.
Concrete equipment bases
6.
Electrical demolition
7.
Cutting and patching for electrical construction
8.
Touch-up painting
REFINISHING AND TOUCH-UP PAINTING
Refinish and touch-up paint as required.
1.
Clean damaged and disturbed areas and apply primer, intermediate, and finish coats to suit the
degree of damage at each location.
2.
Follow paint manufacturer's written instructions for surface preparation and for timing and
application of successive coats.
3.
Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer.
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Repair damage to PVC or paint finishes with matching touch-up coating recommended by
manufacturer.
CLEANING AND PROTECTION
A.
On completion of installation, including outlets, fittings, and devices, inspect exposed finish.
Remove burrs, dirt, paint spots, and construction debris.
B.
Protect equipment and installations and maintain conditions to ensure that coatings, finishes, and
cabinets are without damage or deterioration at time of Substantial Completion.
END OF SECTION 16 05 00
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SECTION 16 12 00 – WIRE AND CABLE
PART 1 – GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this Section.
B.
Related Sections: Section 16110 - Raceways.
1.2
A.
1.3
A.
1.4
SUMMARY
This Section includes wire and cable and associated connectors, splices, and terminations for wiring
systems rated 600V and less. Remote control and signal cable.
SUBMITTALS
Field Test Reports:
requirements.
Indicate and interpret test results for compliance with performance
QUALITY ASSURANCE
A.
Listing and Labeling: Provide wires and cables specified in this Section that are listed and labeled.
1.
The Terms "Listed" and "Labeled": As defined in NFPA 70, Article 100.
2.
Listing and Labeling Agency Qualifications: A "Nationally Recognized Testing Laboratory"
as defined in OSHA Regulation 1910.7.
3.
Underwriters Laboratories (UL) listed equipment assemblies and materials.
4.
Refer to current NEMA Standards for material ratings.
B.
Comply with NFPA 70 (National Electrical Code).
1.5
A.
1.6
DELIVERY, STORAGE, AND HANDLING
Deliver wire and cable according to NEMA WC 26.
COORDINATION
A.
Coordinate layout and installation of cable with other installations.
B.
Revise locations and elevations from those indicated, as required to suit field conditions and as
approved by the Architect/Engineer.
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PART 2 – PRODUCTS
2.1
A.
2.2
MANUFACTURERS
Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1.
Wire and Cable:
a.
American Insulated Wire Corp.; Leviton Manufacturing Co.
b.
BICC Brand-Rex Company
c.
Carol Cable Co., Inc.
d.
Senator Wire & Cable Company
e.
Southwire Company
2.
Connectors for Wires and Cables:
a.
AMP Incorporated
b.
General Signal; O-Z/Gedney Unit
c.
Monogram Co.; AFC
d.
Square D Co.; Anderson
e.
3M Company; Electrical Products Division
BUILDING WIRE AND CABLE
A.
UL-listed building wire and cable with conductor material, insulation type, cable construction, and
rating as specified in Part 3 "Wire and Insulation Applications" Article.
B.
Rubber Insulation Material: Comply with NEMA WC 3.
1.
Type RH, RHW, RHH, XHHW; rating 600V.
C.
Thermoplastic Insulation Material: Comply with NEMA WC 5.
1.
Types THW, THHN, THWN; rating 600V.
D.
Conductor Material: Copper.
E.
Stranding: Solid conductor for No. 12 AWG and smaller; stranded conductor for larger than
No. 12 AWG.
2. 3
A.
CONNECTORS AND SPLICES
UL-listed, factory-fabricated wiring connectors of size, ampacity rating, material, type, and class for
application and service indicated. Comply with Project's installation requirements and as specified
in Part 3 "Connections" Article.
PART 3 – EXECUTION
3.1
A.
EXAMINATION
Examine raceways and building finishes to receive wires and cables for compliance with
requirements for installation tolerances and other conditions affecting performance of wires and
cables. Do not proceed with installation until unsatisfactory conditions have been corrected.
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WIRE AND INSULATION APPLICATIONS
A.
Feeders: Type THHN/THWN, in raceway.
B.
Branch Circuits: Type THHN/THWN, in raceway. Minimum wire size #12 for power and lighting
circuits. For 20 ampere 120V circuits longer than 75 feet, #10 AWG minimum. For 20 ampere
277V circuits longer than 150 feet, #10 AWG minimum. For circuit amperes other than 20 ampere
and for distances greater than listed above, calculate voltage drop and size conductors for maximum
3% voltage drop. Device removal - in multi-wire branch circuits where circuit extends through a
receptacle, it shall be required that all conductors shall be pigtailed so downstream leads do not go
through receptacles. All branch wiring raceways shall include a grounding conductor.
C.
Where harmonic currents exist on circuits supplying electric discharge lighting, data processing or
similar equipment, a full sized neutral shall be provided for each single phase circuit, and an
oversized neutral may be required for each multi-wire circuit.
D.
Remote control and signal cable.
E.
Class 1 or 2 Control Circuits: Type THHN/THWN, in raceway, #14 AWG minimum, stranded
copper with 600 v insulation rated 60°C, with PVC jacket. All control and signal cables shall be in
conduit.
3.3
INSTALLATION
A.
Install wires and cables as indicated, according to manufacturer's written instructions and NECA's
"Standard of Installation."
B.
Conduit fill: Regardless of the type of wire insulation used, for power circuits and feeders, size
conduits according to Table 3C of the National Electrical Code. Lighting circuit conduits shall be
sized in accordance with Table 3B.
C.
Remove existing wires from raceway before pulling in new wires and cables.
D.
Pull Conductors: Use manufacturer-approved, UL listed pulling compound or lubricant where
necessary; compound used must not deteriorate conductor or insulation. Do not exceed
manufacturer's recommended maximum pulling tensions and sidewall pressure values. All
conductors shall be pulled into conduit at the same time.
E.
Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips that will not
damage cables or raceway.
F.
Install exposed cables, parallel and perpendicular to surfaces of exposed structural members, and
follow surface contours where possible.
G.
Identify wires and cables according to Division 16, Section "Electrical Identification."
H.
Parallel conductor feeders shall be of identical type and equal length.
I.
Provide a separate green insulated grounding conductor in all branch circuit and feeder raceways.
WIRE AND CABLE
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Conduits shall be swabbed clean before wire installation.
CONNECTIONS
A.
Conductor Splices: Keep to minimum. Conductors shall be spliced or tapped only in accessible
junction boxes or wireways.
B.
Install splices and tapes that possess equivalent or better mechanical strength and insulation ratings
than conductors being spliced. Steel split-bolt connectors or butt-splices shall be used for splices and
taps in conductors #8 AWG and larger. Connections shall be taped to 150% of insulation value with
UL listed electrical tape.
C.
Use splice and tap connectors compatible with conductor material. Splices and taps shall carry full
ampacity of conductors without perceptible temperature rise.
D.
Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack. Provide pigtails
at all device locations, and connect devices using pigtails. This includes junction boxes, switches
and fixture connections.
E.
Connect outlets and components to wiring and to ground as indicated and instructed by
manufacturer.
F.
All multi-wire circuits require dedicated neutrals. No multi branch circuit breakers are permitted.
G.
Insulation types specified shall conform to NEC requirements for temperature, moisture and
mechanical environmental conditions.
H.
Tighten electrical connectors and terminals according to manufacturer's published torque-tightening
values. If manufacturer's torque values are not indicated, use those specified in UL 486A. All
conductors shall be thoroughly cleaned before terminating or splicing.
3.5
FIELD QUALITY CONTROL
A.
Independent Testing Agency: Provide services of an independent electrical testing agency
according to the requirements of Division 1 Section "Quality Requirements" to perform tests on
installations made under this Section.
B.
Testing: Ground resistance testing shall be performed in the presence of a representative of the
Department of Facilities Management. Provide at least two weeks’ notice prior to testing
C.
Testing: On installation of wires and cables and before electrical circuitry has been energized,
demonstrate product capability and compliance with requirements.
1.
Procedures: Perform each visual and mechanical inspection and electrical test stated in
NETA ATS, Section 7.3.1. Certify compliance with test parameters.
D.
Feeders: Perform a continuity and insulation (meggar) test on all feeders. Minimum four meg.
E.
Correct malfunctioning conductors and cables at Project site, where possible, and retest to
demonstrate compliance; otherwise, remove and replace with new units and retest.
WIRE AND CABLE
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A.
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WIRE COLOR CODING:
Color code wires for building voltage classes as follows:
120/208V - 3 Phase
15000 Volts
277/480V - 3 Phase
Phase A - Black
Phase A - Black
Phase A - Brown
Phase B - Red
Phase B - Red
Phase B - Orange
Phase C - Blue
Phase C - Blue
Phase C - Yellow
Neutral - White
Neutral - White
Neutral - Gray
Ground - Green
Ground - Green
Ground - Green
END OF SECTION 16 12 00
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SECTION 16 13 20 – DUCT BANKS
PART 1 – GENERAL
1.1
A.
1.2
A.
1.3
SUMMARY
This section covers medium-voltage duct bank materials and installation.
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions and
other Division 1 Specifications, apply to work of this section.
REFERENCES
A.
ANSI C80.1 - Rigid Steel Conduit, Zinc-Coated
B.
ANSI/NEMA FB1 - Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit and Cable Assemblies
C.
NEMA TC 2 - Electrical Plastic Tubing (EPT) and Conduit (EPC-40 and EPC-80)
D.
NEMA TC 3 - PVC Fittings for Use with Rigid PVC Conduit and Tubing
E.
NEMA TC 6 - PVC and ABS Plastic Utilities Duct for Underground Installation
F.
NEMA TC 8 - Extra-Strength PVC Plastic Utilities Duct for Underground Installation
G.
NEMA TC 9 - Fittings for ABS and PVC Plastic Utilities Duct for Underground Installation
H.
NEMA TC 10 - PVC and ABS Plastic Communications Duct and Fittings for Underground Installation
I.
NEMA RN 1 – PVC-coated rigid steel conduit
J.
ASTM C 858
K.
NFPA 70 (National Fire Protection Association) – National Electrical Code
L.
ANSI C2 (American National Standards Institute) – National Electrical Safety Code
1.4
A.
SUBMITTALS
Product Data:
1.
Duct-bank materials, including separators and miscellaneous components
2.
Accessories for manholes and boxes
3.
Warning tape
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A.
1.6
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1.7
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QUALIFICATIONS
Manufacturer: Company specializing in manufacturing products specified in this section with minimum
ten years documented experience.
DELIVERY, STORAGE, AND HANDLING
Deliver ducts to Project site with ends capped. Store nonmetallic ducts with supports that will prevent
bending, warping, and deforming.
COORDINATION
Interruption of Existing Electrical Service: Do not interrupt electrical service to facilities occupied by
Owner or others unless permitted under the following conditions:
1.
Notify UCB no fewer than seven days in advance of proposed interruption of electrical service. Do
not proceed with interruption of electrical service without Owner's written permission. All
switching operations shall be performed by UCB personnel.
2.
Coordinate elevations of ducts and duct-bank entrances into manholes with final locations and
profiles of ducts and duct banks as determined by coordination with other utilities, underground
obstructions, and surface features. Revise locations and elevations from those indicated as required
to suit field conditions and to ensure that duct runs drain to manholes and as approved by the
Owner.
PART 2 – PRODUCTS
2.1
MATERIALS AND EQUIPMENT
A.
General: Electrical components and materials shall be in accordance with the National Electrical Code
(NFPA 70). When applicable, all electrical materials and equipment shall be listed by Underwriters
Laboratories and shall bear the UL label.
B.
Conduit:
1.
Above Ground Conduit: Rigid metal conduit, UL 6, hot dip galvanized, threaded type.
2.
Underground Ground Conduit within 5 feet of transformers, and for any bends greater than or equal
to 90 degrees. PVC-coated rigid steel conduit. Coating thickness 0.040 inch, minimum. Coating
for Fittings for PVC-Coated Conduit - minimum thickness, 0.040 inch, with overlapping sleeves
protecting threaded joints. Minimum conduit radius 36 inches.
3.
Underground Conduit, straight sections: Rigid plastic conduit, UL 651, Schedule 40.
C.
Fittings:
1.
Metal Fittings: NEMA FB1.
2.
Plastic Fittings: NEMA TC3.
3.
Duct Separators: Factory-fabricated rigid nylon interlocking spacers, sized for type and sizes of
ducts with which used, and selected to provide minimum duct spacings indicated while supporting
ducts during concreting or backfilling.
D.
Pull Wire: Pull wire shall contain No. 14 hot-dip galvanized steel strands, minimum, each having a
minimum tensile strength of 200 lbs. Total strands as appropriate for the anticipated pulling tension, with
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pull wire strength at least 5 times the maximum pulling tension for the cable as defined by the
manufacturer.
E.
Warning Tape: Provide warning tape 12 inches above the duct bank. Tape shall be 3 inches wide,
yellow, polyethylene film, with a “DANGER – HIGH-VOLTAGE CABLE” warning.
PART 3 – EXECUTION
3.1
EARTHWORK
A.
Excavation and Backfill: Comply with Division 16, Section "Common Work Results for Electrical," but
do not use heavy-duty, hydraulic-operated, compaction equipment.
B.
Restore areas disturbed by trenching, storing of dirt, cable laying, and other work. Restore vegetation and
include necessary topsoiling, fertilizing, liming, seeding, sodding, sprigging, and mulching.
3.2
A.
INSTALLATION
Duct Bank:
1.
Install duct in accordance with drawings. All ducts shall be Schedule 40 PVC unless indicated
otherwise. Route ducts as straight as possible between points.
2.
Install duct bank at depths as indicated on drawings, but at 36 inches below finish grade minimum.
Cross ducts below gas piping.
3.
Cut duct square using saw or pipe cutter; de-burr cut ends.
4.
Insert duct to shoulder of fittings.
5.
Join nonmetallic duct using adhesive as recommended by manufacturer.
6.
Wipe nonmetallic duct dry and clean before joining. Apply full even coat of adhesive to entire area
inserted in fitting. Allow joint to cure for 20 minutes, minimum.
7.
Install no more than equivalent of three 90-degree bends between pull points.
8.
Minimum Space between Ducts: 3 inches between medium voltage ducts and 4 inches between
power and signal ducts. Conduit separators shall be nylon, with nylon tie downs, suitable for the
application. Concrete blocks are prohibited for duct spacers. Do not use metal tie wires that may
form conductive or magnetic loops around ducts or duct groups.
9.
Stagger the joints of the conduits by rows and layers so as to provide a duct line having the
maximum strength. During construction, protect partially completed duct lines from the entrance
of debris such as mud, sand and dirt by means of suitable conduit plugs.
10. Duct banks shall be reinforced using steel rebar (4-bar cage).
11. Anchor duct to prevent movement during concrete placement.
12. Forms: Use walls of trench to form side walls of duct bank where soil is self-supporting and
concrete envelope can be poured without soil inclusions; otherwise, use forms.
13. Duct banks shall be encased in concrete per Division 16, Section “Common Work Results for
Electrical” and per the drawings. Use red mineral pigment with concrete for identification. Entire
duct encasement shall be red.
14. The encasement surrounding the structure of conduits shall have a minimum thickness of three
inches on the top, bottom and sides.
15. Pouring Concrete: Spade concrete carefully during pours to prevent voids under and between
conduits and at exterior surface of envelope. Do not allow a heavy mass of concrete to fall directly
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17.
18.
19.
B.
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onto ducts. Use a plank to direct concrete down sides of bank assembly to trench bottom. Allow
concrete to flow to center of bank and rise up in middle, uniformly filling all open spaces.
Swab duct. Pull mandrell through all ducts to clear of all particles of earth, sand, and gravel; then
immediately install conduit plugs.
Pulling Cord: Install #12 copper pull wire in ducts, including spares.
Backfill material shall be clean and free of stones.
Install plastic warning tape at 18 inches below grade (minimum) or 12 inches above the duct bank.
Conduit Installation – Exterior:
1.
Underground Raceways (ducts) General Requirements:
a.
Cross ducts below gas piping.
b.
Slope ducts to manholes.
c.
Locate ducts below the frost line or at 36 inches below finish grade, whichever is deeper.
d.
route ducts as straight as possible between points.
e.
Specify reinforcing rods in concrete encasement for all duct banks. Specify a rebar 4-bar
cage.
f.
Specify approved nylon conduit spacers for multiple conduit runs in same trench (duct
banks).
g.
Require that each raceway be proved clean, clear, and useable, with a #12 copper pull wire
left in place. Specify duct plugs for finished raceways.
h.
Specify that backfill material be clean and free of stones.
i.
Concrete blocks are prohibited for duct spacers.
j.
Specify nylon tie downs to hold ducts to spacers.
k.
Wire duct tie downs are prohibited.
l.
Where duct banks enter buildings, manholes, etc., require a minimum of four #2 rebar
dowels to prevent shearing of ducts.
m. Specify plastic warning tape at 18 inches below grade.
2.
Underground Primary Raceways (Ducts):
a.
Electrical non-metallic conduit encased in concrete. Schedule 40 PVC or fiber-reinforced
epoxy.
b.
Transition duct to PVC-coated rigid metal conduit 5 feet from the building outside wall.
c.
Standard 6-inch conduit size in all ducts. Also provide one, empty, 2-inch communication
conduit in all duct banks from the transformer to the building.
d.
Provide red color additive to concrete for identification (entire duct bank shall be red).
e.
Provide rigid steel, large-radius (minimum 36-inch radius) bends with PVC coating; or
filament-wound, reinforced, as manufactured to comply with the specifications in the latest
revisions of NEMA TC 2002 and UL 1684.
f.
Polyethylene film tape (3 inches wide, yellow) for buried cable marker. Bury 1’-0” above
high-voltage conduit. Require wording/warning as follows:
DANGER
HIGH-VOLTAGE CABLE
3.3
A.
FIELD QUALITY CONTROL
Verify duct bank installation is in accordance with this specification and the drawings.
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B.
Verify pull strings have been installed in empty ducts.
C.
Verify Warning tape has been installed.
D.
Clean internal surfaces of manholes. Remove foreign material.
E.
As-built locations and elevations of high and low points along duct banks.
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SECTION 16 28 90 – SURGE PROTECTIVE DEVICES FOR LOW-VOLTAGE ELECTRICAL
POWER CIRCUITS
PART 1 - GENERAL
1.1
SUMMARY
A.
Section Includes: This specification includes requirements for a high energy surge protective
devices (SPDs) used to protect AC electrical distribution from the effects of lightning, utility
switching events, and voltage impulses generated internally within a facility.
B.
Design and Performance Requirements:
1.
The SPDs covered under this section include surge protection devices suitable for use as
Type 2 devices as defined by UL 1449, Third Edition.
2.
System shall be tested to meet ANSI/IEEE C62.41.1-2008, and tested per ANSI/IEEE C62.452002. The system shall be UL 1449 listed as a complete system under the Third Edition
standard for SPDs. Systems not UL 1449, Third Edition listed are not acceptable.
3.
The system shall be tested by a Nationally Recognized Testing Laboratory (NRTL). Systems
not tested by an NRTL are not acceptable.
4.
The surge suppression, bonding, and grounding required in this specification for the protection
of electrical and electronic systems shall effectively protect the systems to which it is applied
against transient surges caused by lightning and other causes throughout the useful life of the
system.
5.
The connection of the required protective devices, bonds, and grounds shall neither impair nor
interrupt the normal operation of any electrical or electronic system.
C.
SPD protection cascade levels indicated on the drawings:
1.
SPD protection cascade levels are indicated on the drawings with the required minimum SPD
Surge Rating in thousands of Amps (kA). If there is no SPD Surge Rating on the plans, the
minimum SPD Surge Rating shall be as prescribed in these specifications.
2.
Refer to paragraphs below for the parameters prescribing the identified cascade level of SPD.
1.2
A.
1.3
A.
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this Section.
REFERENCES
All SPD devices will be designed, tested, manufactured, listed, and installed in accordance with the
applicable publications, resources, and standards shown below:
1.
ANSI/IEEE C62.41.1-2008, Guide On The Surge Environment In Low-Voltage (1000 V And
Less) AC Power Circuits
2.
ANSI/IEEE C62.45-2002, IEEE Recommended Practice on Surge Testing for Equipment
Connected to Low-Voltage (1000V and Less) AC Power Circuits
3.
ANSI/IEEE C84.1, 2006, Standard for Electric Power Systems and Equipment - Voltage
Ratings (60 Hertz)
4.
ANSI/IEEE Standard 141-1993 (R1999), Recommended Practice for Electric Power
Distribution for Industrial Plants (IEEE Red Book)
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5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
B.
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FIPS Pub 94, Federal Information Processing Standards Publication - Guideline on Electrical
Power for ADP Installations
IEEE Standard 142-2007 IEEE Recommended Practice for Grounding of Industrial and
Commercial Power Systems (IEEE Green Book)
IEEE Standard 1100-1999, IEEE Recommended Practice for Powering and Grounding
Sensitive Electronic Equipment (IEEE Emerald Book).
Information Technology Industry Council (ITI) (formerly CBEMA)
ISO 9001: 2008, Quality Management Systems - Model for Quality Assurance in Design,
Development, Production, Installation, and Servicing
MIL Standard 220B, 24 January 2000, Test Method Standard - Method of Insertion Loss
Measurement
National Fire Protection Association - NFPA-70 (National Electrical Code), 75 AND 78.
Underwriters Laboratories UL 1283 Electromagnetic Interference Filters, 30 June 1998,
Revision 2, VL 96, 198, 248-1, 489.
Underwriters Laboratories UL 1449 Standard for Surge Protective Devices, Third Edition
(2009 Revision effective 9/29/2009).
NEMA LS-1 – 1992 Guidelines.
CSA C22.2 No.8-M1986, C233.1-87.
Electrical work shall meet the requirements of national, state, and local codes that govern the
project. It shall be the Contractor's responsibility to be aware of and abide by the governing codes.
SUBMITTALS
A.
Product Data:
1.
Complete product data detailing compliance, or exception in a paragraph by paragraph listing,
to all provisions of this specification.
2.
Copies of documentation stating that the Surge Protection Device is listed from an NRTL
(UL, ETL, etc) and are tested and listed to UL 1449.
3.
Indicate the type of internal or external fusing that is incorporated in the SPD system and what
impact the fusing has on the performance of the device with respect to surge capacity and
clamping levels.
4.
Copies of test reports from n NRTL, capable of producing 200kA surge current waveforms,
verifying the suppressor components can survive published surge current rating on a per mode
basis using the ANSI/IEEE C62.41 impulse waveform C3 (8 x 20 microsecond, 20kV/10kA).
Test data on an individual module is not acceptable.
5.
Installation, operation and maintenance manuals: Provide one copy of the installation, startup, operation and maintenance manuals for each type unit supplied.
B.
Shop Drawings: Provide electrical and mechanical drawings that include detail on unit dimensions,
weights, wire size, field connections and mounting provisions. Installation instructions shall clearly
state whether the system requires an external overcurrent device to maintain the system’s UL 1449
listing.
C.
Manufacturer's qualifications
D.
Warranty and warranty statement
E.
Lead length equivalent clamping voltages
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QUALITY ASSURANCE
A.
Qualifications:
1.
Each complete suppression unit shall be supplied by a manufacturer whose Quality System
has been certified as compliant with ISO 9001:2008 or has a UL-Certified Test Laboratory.
2.
Manufacturers shall provide proof that they have been regularly engaged in the design,
manufacturing and testing of SPD equipment for not less than 10 years.
B.
Regulatory Requirements:
1.
Each complete suppression unit shall be Underwriters Laboratories (UL) 1449, Third Edition
listed.
2.
Units shall bear the Voltage Protection Rating (VPR) issued by UL for all protected modes.
3.
The complete SPD assembly shall have a UL assigned short circuit current rating (SCCR) of
200 kA. The SPD shall be marked with a short circuit current rating and shall not be installed
at a point on the system where the available fault current is in excess of that short circuit
current rating. If the short circuit rating of the device is less than the available fault current,
then surge suppression-type fuses with fuseholder/disconnect must be included with the
submittal.
1.6
A.
1.7
WARRANTY
Manufacturer's Warranty: Manufacturer shall provide a product warranty for a period of not less
than 15 years parts. Provide a copy of warranty statement clearly establishing the terms and
conditions to the Owner.
SYSTEM STARTUP
A.
The suppressor manufacturer or manufacturer’s representative shall perform experienced, qualified
power quality application and field supervision engineering services, on an as-needed basis.
B.
The manufacturer’s representative shall provide startup, testing, and training as required by the
Electrical Contractor and the contract specifications.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS
The listing of specific manufacturers below does not imply acceptance of their products that do not
meet the specified ratings, features, and functions. Manufacturers listed are not relieved from
meeting these specifications in their entirety.
1.
Innovative Technologies (Eaton)
2.
Liebert Corporation
3.
Thomas & Betts Power Solutions
a.
Joslyn
b.
Current Technology
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MANUFACTURED UNITS
A.
Equipment design shall provide a multi-stage parallel protector with voltage ratings as specified
below. The equipment surge current rating minimum surge current, clamping voltage, and
maximum continuous operating voltage, shall be based on an 8 x 20 microsecond waveform per
ANSI/IEEE C62.41 Category C3. Declared Maximum Continuous Operating Voltage (MCOV)
shall be at least 115 percent of the nominal system operating voltage and in compliance with test
and evaluation procedures outlined in the nominal discharge surge current test of UL1449 Third
Edition, section 38.
B.
Minimum nominal discharge surge current: 20kA.
C.
Unit shall have not more than 10% deterioration or degradation of the UL1449 Third Edition
Voltage Protective Rating (VPR) due to repeated surges.
D.
Unless indicated otherwise, the suppression system shall incorporate a hybrid design consisting of
any of the following: selenium cells, silicon avalanche diodes, MOV arrays and filtering capacitors.
These components shall optimally share surge currents to ensure maximum performance and longterm reliability. The system shall not utilize gas tubes, spark gaps, or other components that might
short leading to power interruption.
E.
Each protection array shall be capable of withstanding the indicated quantity of sequential 10,000Amp ANSI/IEEE C62.41 Category C3 impulses without degradation or failure. Each system must
have indicator lights to report the status of each surge suppression mode (L-N, L-G, N-G, etc.).
Indication of AC line status only is not acceptable. The failure of a single MOV shall result in
annunciation via an indicating light. Systems that require external testing equipment or tests to
insure proper surge protection operation are expressly excluded. Unit shall have a monitoring
option available to be able to test and determine the percentage of protection available at all times.
F.
The SPD shall be fused per UL 1449 Third Edition with fuses capable of allowing the suppressor’s
maximum rated transient current to pass through suppressor without fuse operation. Each phase
shall be individually fused with 200,000 AIC rated class J fuses for maximum fault current
protection. The complete SPD assembly shall have a UL assigned short circuit current rating
(SCCR) of 200 kA All overcurrent protection circuits shall be monitored and provide indication of
suppression operability or failure.
G.
Protection modes: Protection modes are identified in the tables below and as appropriate for the
application. Refer to the one line diagrams for voltage ratings, 3-wire and 4-wire systems, system
ampacities and SPD Surge Rating. The SPD shall provide bi-directional, positive, and negative
impulse protection for:
1.
Line to Line (L-L)
2.
Line to Neutral (L-N)
3.
Line to Ground (L-G)(WYE or Delta)
4.
Neutral to Ground (N-G)
H.
SPDs shall have peak clamping and let-through voltages as prescribed in paragraphs below. Testing
shall be done in accordance with ANSI/IEEE C62.41, on the complete suppression unit with lead
length comparable to that needed to connect the SPD to the equipment to be protected. Lead length
is defined as the length between the SPD device enclosure exterior to the connection point of the
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equipment to be protected. The lead length parameter must be specified on test documentation and
shall not be less than 36-inches. For SPD devices manufactured without fixed leads, or lengths less
than 36-inches, furnish calculations and supporting documentation for equivalent clamping voltages
at the required lead length.
I.
No appreciable magnetic fields shall be generated by the SPD. All units must be capable of use
directly in computer rooms in any location without danger to disk units, disk packs, or tapes.
J.
Enclosure: Dual rated 4 and 12.
K.
Environmental Requirements
1.
Storage Temperature: -55 to +85°C (-67 to +185°F)
2.
Operating Temperature: -40 to +60°C (-40 to +140°F)
3.
Relative Humidity: 0% to 95% (non-condensing)
4.
Audible Noise: less than 45dB at 1.5m (5 feet)
5.
Operating Altitude: 0 to 18,000 feet above sea level
L.
The SPD system shall include noise filtering provide minimum 33 dB at 100 MHz as measured by
the MIL Standard 220B Insertion Loss Test method.
M.
Each fuse shall be individually sealed in a manner that eliminates the potential for cross arcing.
N.
Each unit shall provide the following features:
1.
Advanced Monitoring.
2.
Form C dry alarm contacts,240 Volts, 5A.
3.
Field testable while installed.
4.
Measuring capability to indicate the percent protection available in SPD.
5.
Graphics display.
6.
Ethernet, Modbus TCP.
7.
Filter (Attenuation frequencies per M1L-Std-220B January 2000)
2.3
SPD FOR ELECTRICAL SERVICE ENTRANCE
A.
The SPD shall incorporate a combination of MOV and Selenium technology allowing for transient
surge and temporary over voltage protection.
B.
Suppressors shall have the following minimum surge current ratings per mode, and not less than the
switchboard/panelboard AIC rating.
2,000 – 4,000-Amp Main Switchboard:
800 – 1,800-Amp Main Switchboard[Switchgear]:
400 – 800-Amp Main Distribution Panel:
250,000 Amps/mode
150,000 Amps/mode
100,000 Amps/mode
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Surge Current Capacities shall be as follows:
Surge Current Capacities
SPD
Surge
Rating
250
150
100
D.
Protection Mode
L-N, L-G, N-G
L-L, per phase
L-N, L-G, N-G
L-L, per phase
L-N, L-G, N-G
L-L, per phase
Single pulse
surge current capacity
per mode (kA)
250
500
150
300
100
200
Maximum voltage ratings shall be as follows:
Maximum Voltage Ratings
System
Voltage
277/480
Protectio
n Mode
L-L
L-N
L-G
N-G
L-L
L-N
L-G
N-G
MCO
V
300
150
150
150
550
320
320
320
Clamping
Voltage, B3
Ringwave 6kV,
500A
375
300
375
350
625
525
825
675
Clamping
Voltage, C3
Comb. Wave
20kV, 10kA
950
625
625
725
1,925
1,125
1,050
1,200
UL 1449 Third
Edition Voltage
Protective
Rating (VPR)
6kV, 3kA
1,000
700
700
1,000
1,800
1,200
1,200
1,500
PART 3 - EXECUTION
3.1
EXAMINATION
A.
Site Verification of Conditions: Examine the areas and conditions under which the transient voltage
surge suppressors are to be installed and correct conditions detrimental to the completion of work.
B.
Verify the proper application of the SPD (i.e. voltage, phases, etc.) and coordinate with upstream
and downstream transient suppression. Assure that all neutral conductors are bonded to the system
ground at the service entrance or the serving transformer prior to installation of the associated SPD.
3.2
A.
INSTALLATION/APPLICATION
Special techniques: Install the SPDs as indicated in the manufacturer’s installation instructions, in
accordance with the applicable portions of NEC, and in accordance with recognized industry
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practices to ensure that the product complies with requirements. NEC, State, and local codes will
prevail.
B.
Suppressors shall be installed without unnecessary bends and as close as practical to the equipment,
switchgear, switchboard, or panelboard being protected in such a way to minimize connecting lead
length. Suppressor leads shall not extend beyond either the manufacturer's recommended length or
three feet, whichever is less, without approval. Unless indicated otherwise, install the circuit
breaker (OCP) feeding the SPD in the top position of the switchboard or panelboard; mount the SPD
above the section housing the circuit breaker. Use stranded conductors to connect between the OCP
and the SPD. Bundle and twist all conductors including neutral and ground between the supply
terminals and SPD two-twists per 12-inches.
C.
Interface with Other Work: Coordinate with other electrical work as necessary to interface
installation of the surge suppression systems with other work on the site. This includes verification
of ground conductor termination capabilities, coordination of SPD supply breaker/fuse if used, and
verification of SPD location and space requirements on the switchboard, panelboard, etc.
3.3
FIELD QUALITY CONTROL
A.
Site Tests, Inspection: Perform field testing on each device in accordance with manufacturer’s
recommended procedures. Inspect each SPD installation and provide the Owner with a letter
stating equipment and installation meets intent of Contract Documents, and manufacturer's
warranties and guarantees are in effect.
B.
Manufacturers' Field Services: The manufacturer’s representative shall be available for consultation
to provide all necessary instructions for proper installation of the equipment.
3.4
A.
TRAINING
Provide up to two hours training of the theory, operation, maintenance, and troubleshooting of the
SPD system.
END OF SECTION 162890
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SECTION 16 32 00 – MEDIUM-VOLTAGE TRANSFORMERS
PART 1 – GENERAL
1.1
A.
1.2
SUMMARY
This Section includes three-phase dead front pad-mounted, liquid-filled distribution transformers
with medium-voltage primaries and low-voltage secondaries. (Pad mounted)
RELATED DOCUMENTS
A.
Drawings and general provisions of Contract, including Division 1 Specifications, apply to work of
this section and Division 16.
B.
Related Sections:
1.
Section 02200 - Earthwork: Soil Compaction Requirements.
2.
Section 03300 - Cast-in-Place Concrete: Pads for Transformer Support.
3.
Section 16110 - Raceways.
4.
Section 09900 - Painting.
1.3
REFERENCES
A.
All characteristics, definitions, and terminology shall be in accordance with the latest revision of
applicable IEEE, ANSI, NEMA, and ASTM standards.
B.
ANSI/NEMA TP-1: Guide for Determining Energy Efficiency for Distribution Transformers.
C.
Manufacturer must be ISO 9001 certified.
1.4
SUBMITTALS
A.
Refer to Division 1, Section “Submittal Procedures” and Division 16, Section “Basic Electrical
Requirements.”
B.
Product Data: Include rated nameplate data, capacities, dimensions, recess openings, minimum
clearances, installed devices and features, and performance for each type and size of transformer
indicated. Submit standard model design tests and options. Include model performance data
including losses and efficiency at 25, 50, 75, and 100% rated load; and sound level.
C.
Shop Drawings: Wiring and connection diagrams including power wiring.
D.
Coordination Drawings: Submit coordination drawings indicating outline dimensions, connection
and support points, weight, specified ratings, and materials. Include the following:
1.
Underground primary and secondary conduit stub-up locations.
2.
Dimensioned concrete base with openings, outline of transformer, and required clearances.
3.
Ground rod and grounding cable locations.
4.
Submit manufacturer's installation instructions under provisions of Division 1.
E.
Qualification Data: For testing agency.
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F.
Source quality-control test reports.
G.
Field quality-control test reports (two sets).
H.
Operation and Maintenance Data: Manufacturer’s Operating and Maintenance manuals for
transformer and accessories shall be provided under provisions of Division 1, Sections 01700,
01730. Include procedures for sampling and maintaining fluid, cleaning unit, and replacing
components, in addition to the following:
1.
Product engineering data, including standard model design tests and options for transformer,
fuse curves, terminations, and test reports.
2.
Include final approved shop drawings and coordination drawings.
3.
Detailed list of replaceable components, including part numbers.
4.
Name, contact phone numbers, and addresses of Contractor and equipment manufacturer’s
representatives.
5.
Manufacturer's installation instructions under provisions of Section 01300.
6.
Product data indicating standard model design tests and options.
1.5
QUALITY ASSURANCE
A.
Manufacturer: Company specializing in distribution transformers with three years documented
experience. Manufacturer must be ISO 9001 certified, FM labeled, and UL listed.
B.
Installer qualifications: All electrical work shall be performed by a State of Colorado licensed
contractor under the supervision of a licensed electrician. Contractors shall verify that electricians
are currently licensed by the State of Colorado and shall submit electrician names and license
numbers. Contractor shall have a minimum of 3 years of satisfactory experience in conducting the
type of work specified.
C.
Testing Agency Qualifications: An independent testing agency, with the experience and capability
to conduct the testing indicated, that is a member company of the InterNational Electrical Testing
Association or is a nationally recognized testing laboratory (NRTL) as defined by OSHA in
29 CFR 1910.7, and that is acceptable to authorities having jurisdiction.
1.
Testing Agency's Field Supervisor: Person currently certified by the InterNational Electrical
Testing Association or the National Institute for Certification in Engineering Technologies to
supervise on-site testing specified in Part 3.
D.
Transformers shall be manufactured and all work shall be performed in accordance with the
following minimum standards and codes:
1.
ANSI C37.47 - Specifications for Distribution Fuse Disconnecting Switches, Fuse Supports,
and Current-Limiting Fuses.
2.
IEEE Standard C57.12.00 – General Requirements for Liquid-Immersed Distribution, Power
and Regulating Transformers
3.
ANSI Standard C57.12.26 – Pad-Mounted, Compartmental-Type, Self-Cooled, Three-Phase
Distribution Transformers with Separable Insulated High-Voltage Connectors, High-Voltage,
34,500GrdY/19,920 Volts and Below; 2500 kVA and Smaller
4.
ANSI Standard C57.12.28 – Switchgear and Transformers - Pad-Mounted EquipmentEnclosure Integrity
5.
IEEE Standard C57.12.90 –Test Code for Liquid-Immersed Distribution, Power and
Regulating Transformers and Guide for Short-Circuit Testing of Distribution and Power
Transformers (ANSI)
MEDIUM-VOLTAGE TRANSFORMERS
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6.
7.
8.
9.
10.
11.
12.
13.
E.
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ANSI/IEEE 386 - Separable Insulated Connector Systems for Power Distribution Systems
Above 600V.
ASTM D877 - Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using
Disk Electrodes.
IEEE C57.12.70 – Terminal Markings and Connections for Distribution and Power
Transformers.
NEMA Standard TPI – Guide for Determining Energy Efficiency for Distribution
Transformers, Energy Star Label
CAN/CSA-C88-M90 - Electrical Power Systems and Equipment.
NFPA 70 – National Electrical Code
ANSI/IEEE C2 – National Electrical Safety Code
NECA – Standard of Installation
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store, protect, and handle equipment in accordance with manufacturer’s instructions,
Division 1, and Sections 01600 and 16010.
B.
Provide temporary heating as required according to manufacturer's storage requirements.
1.7
A.
1.8
PROJECT CONDITIONS
Service Conditions: The following conditions apply to this installation: Altitudes above 3300 feet.
COORDINATION
A.
Coordinate size and location of concrete bases.
B.
Coordinate installation so no piping or conduits are installed in space allocated for medium-voltage
transformers except those directly associated with transformers.
1.9
A.
WARRANTY
All electrical equipment, accessories, and workmanship shall be provided in accordance with the
Contract Documents. The Contractor shall warrant the electrical installation, including all material
and workmanship, for a period of one year from the date of final acceptance of the installation.
PART 2 – PRODUCTS
2.1
A.
MANUFACTURERS
Manufacturer: Company specializing in distribution transformers with three years documented
experience.
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B.
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Acceptable Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1.
ABB
2.
Cooper/RTE
3.
Square D
PAD-MOUNTED, LIQUID-FILLED DISTRIBUTION AND POWER TRANSFORMERS
A.
Description: Pad-mounted, three – phase, 2-winding transformer with 13.8 kV delta primary and
wye secondary. The transformer shall be FM Labeled, UL listed, compartment type, self-cooled, for
mounting on a pad and shall comply with the latest applicable standards. Drawings indicate size
(kVA capacity), secondary voltage, connections, and estimated dimensional requirements of
transformers and are based on the specific system indicated. Impedance shall be per ANSI
standards. Transformers larger than 1000 kVA shall not be used without written authorization from
the Director of Utility Services. Consult with the Director of Utility Services if the new transformer
can be paralleled with an existing transformer.
B.
The high- and low-voltage compartments shall be located side by side, separated by a steel barrier.
Terminal compartments shall be full height, air-filled, with individual doors. The high voltage door
fastenings shall not be accessible until the low voltage door has been opened. The front of both
compartments shall be removable to allow the transformer to be rolled or skidded into position over
conduit stubs. ANSI tank grounding provisions shall be furnished in both compartments.
C.
The transformer shall be of sealed-tank construction of sufficient strength to withstand a pressure of
7 psi without permanent distortion. The cover shall be welded and the fastenings tamper-resistant.
The transformer shall remain effectively sealed for a top oil temperature range of -5°C to 105°C.
Lifting eyes and jacking pads shall be provided.
D.
Coils shall be wound with aluminum conductors. Core and coil assembly shall be the five-legged
wound core type, using high grade, grain-oriented silicon steel laminations carefully annealed after
fabrication to restore high magnetic permeability. Magnetic flux is to be kept well below the
saturation point. Transformer shall exceed NEMA TP-1 Efficiency Requirements (reference for
linear load at 35% of nameplate rating).
E.
Insulating Liquid: Dielectric fluid shall be non-toxic, non-bioaccumulating and be readily and
completely biodegradable per EPA OPPTS 835.3100. The fluid shall have a minimum open cup fire
point (ASTM D92) of 350 deg. C and be FM approved, UL Classified less-flammable Envirotemp
FR3, all in accordance with current NEC Section 450-23.
F.
The average temperature rise of the windings, measured by the resistance method, shall be 65°C
when the transformer is operated at rated kVA output in a 40°C ambient. The transformer shall be
capable of being operated at rated load in a 30°C average, 40°C maximum ambient, as defined by
ANSI C57.12.00 without loss of service life expectancy.
G.
Basic Impulse Level: 95 kV.
H.
Full-Capacity Voltage Taps: Four nominal 2.5 percent taps, 2 above and 2 below rated primary
voltage; with externally operable tap changer for de-energized use and with position indicator and
padlock hasp.
MEDIUM-VOLTAGE TRANSFORMERS
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I.
Cooling System: Class OA, self-cooled.
J.
Primary Fuses: 15.5 kV fuse assembly with fuses complying with IEEE C37.47.
1.
Fuses shall be sized as appropriate for the transformer rating and shall be Bay-O-Net
expulsion-type liquid-immersed fuses in series with ELSP current-limiting backup fuses that
are externally replaceable with a hot stick without opening transformer tank.
2.
Minimum interrupting rating shall be 12.5 kA symmetrical, 20 kA asymmetrical.
3.
Provide one set (3) of spare primary fuses with the transformer.
K.
High-Voltage Terminations and Equipment: The high voltage terminations and equipment shall be
dead front, conforming to ANSI C57.12.26 and ANSI/IEEE 386.
1.
The high voltage bushings shall be 15 kV, 600A deadbreak primary one piece bushings.
Provide six 600 A deadbreak bushings as specified by the Director of Utility Services, for
loop-feed application and suitable for insulated deadbreak connectors, with parking stands
adjacent to bushings. Provide two 600A, oil immersed, two-position load-break switches for
loop-feed application and one 300A, two position switch for isolating the transformer
windings. The 3-phase switches shall include hook-stick operating handle in primary
compartment. Switches shall be wired per UCB diagram.
2.
Transformers that include 600A deadbreak bushings shall have cabinets sized to accommodate
600A to 200A tap bushings with dead end caps or dead front MOV lightning arresters.
L
The low voltage bushings shall be molded epoxy, and provided with blade-type spade terminals with
NEMA standard hole spacing arranged for vertical take-off. The low voltage neutral shall be an
insulated bushing, grounded to the tank by a removable ground strap.
M.
Accessories: Transformers shall include the following additional accessories housed in a side
accessories cabinet which is full height of the transformer with a lockable Penta - head cabinet door.
1.
Magnetic liquid-level gage
2.
1/4-inch NPT with pressure-vacuum gage
3.
Dial type thermometer
4.
Filling Plug: 1 inch mounted in the cover
5.
Drain Plug: 1 inch
6.
Sampling Valve: 1 inch
7.
Pressure Relief Device: Self-sealing with indicator
8.
Three spare Bay-O-Net style fuses
9.
NSI tank ground pad
10. Tap changer handle
11. Engraved metal nameplate
N.
Primary Overcurrent Protection: Two fuse system consisting of Bayonet-type, oil immersed
expulsion fuse in series with current limited backup fuse. Current limiting backup fuse to be
mounted inside the transformer under oil. The current limiting fuse should be located as near as
practical to the incoming primary bushing, on the source side of the expulsion fuse. The two fuses
shall be coordinated so that the expulsion fuse clears low energy faults on the secondary system and
the current limited fuse clears only high energy includes overload protection, can be provided as an
alternate with approval from the Manager of Utilities Distribution. All transformer fusing shall be
coordinated with upstream phase overcurrent devices.
O.
Aluminum windings, as specified by Manager of Utilities Distribution.
MEDIUM-VOLTAGE TRANSFORMERS
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P.
NEMA TP1 Design
Q.
Cabinet to be sized to accommodate 600 amp bushings.
R.
Provide three spare Bayonet fuses.
2.3
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IDENTIFICATION DEVICES
A.
Nameplates: Engraved, metal nameplate for each transformer, mounted with corrosion-resistant
screws.
B.
Transformer ID tag marking: Contractor is responsible to install transformer identification tag and
cable ID on the new installed transformer. Install 2" x 2" new non reflective weather resistant
transformer identification tags. Cables ID tags on the transformer inside wall above each loop feed
switch:
Cable ID XX
From XXX to XXX
2.4
SOURCE QUALITY CONTROL
A.
Factory Tests: Perform design and routine tests according to standards specified for components.
Tests shall be conducted in accordance with the provisions of ANSI C57.12.90 and shall include, as
a minimum, the following factory-certified tests:
1.
Resistance measurements of all windings on rated-voltage connection and on tap extreme
connections
2.
Ratios on rated-voltage connection and on tap extreme connections
3.
Polarity and phase relation on rated-voltage connection
4.
No-load loss at rated voltage on rated-voltage connection
5.
Excitation current at rated voltage on rated-voltage connection
6.
Impedance and load loss at rated current on rated-voltage connection and on tap extreme
connections
7.
Applied potential
8.
Induced potential
9.
Leak test
10. Impulse test
B.
Factory test results shall be provided prior to setting the transformer.
PART 3 – EXECUTION
3.1
A.
EXAMINATION
Examine areas and conditions for compliance with requirements for medium-voltage transformers.
Coordinate work with other Divisions.
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B.
Examine locations of conduits and grounding systems to verify the following:
1.
Wiring entries comply with layout requirements.
2.
Entries are within conduit-entry tolerances specified by manufacturer and no feeders will have
to cross section barriers to reach load or line lugs.
C.
Examine concrete base for suitable mounting conditions where transformer will be installed.
D.
Verify that adequate ground connections are in place. Maximum ground resistance shall be 5 ohms
at location of transformer, with primary cable grounds connected.
E.
Proceed with installation only after unsatisfactory conditions have been corrected.
F.
Installation shall be in accordance with NECA Standard of Installation, and manufacturer's
instructions.
3.2
INSTALLATION
A.
Install transformer on concrete base in accordance with manufacturer's instructions.
anchoring where required or indicated.
B.
Maintain minimum clearances and workspace at equipment according to manufacturer's written
instructions and NFPA 70. Obtain clearance approval from the UCB Manager of Utility
Distribution.
C.
Determine phase rotation of secondary equipment prior to terminating conductors and verify phase
rotation after transformer is installed. Adjust termination arrangement if necessary.
D.
Adjust primary taps to tap 4 (13,455V) on 13,800V nominal transformers.
E.
Remove all materials scrap, etc. relative to the electrical installation, and leave the premises and all
equipment in a clean, orderly condition.
F.
Transformer start-up: The on site test shall be completed after it is set on it's permanent pad and
grounded. The transformer will not be started until all tests are complete and turned over to the
Owner and engineer (2 sets) for review and approval.
G.
Transformers shall be looped into the primary electric distribution system.
H.
All secondary conductors shall be terminated utilizing compression type 2 hole lugs.
I.
Transformer grounding per specification E16390 transformer installation.
J.
New transformer installation shall have fault indicator as per specification E16366.
3.3
Provide
IDENTIFICATION
A.
Identify field-installed wiring and components and provide warning signs to NEMA 260. Provide
cable (circuit, phase) identification on primary cables and color-code secondary cables.
B.
Provide engraved plastic laminate equipment identification label. Text shall match terminology and
numbering of the contract drawings.
MEDIUM-VOLTAGE TRANSFORMERS
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C.
3.4
A.
3.5
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Provide Code listing label for the non-toxic dielectric fluid.
CONNECTIONS
Tighten electrical connectors and terminals according to manufacturer's published torque-tightening
values. If manufacturer's torque values are not indicated, use those specified in UL 486A and
UL 486B.
FIELD QUALITY CONTROL
A.
After installing transformers but before primary is energized, Contractor shall verify that grounding
system at transformer is tested at specified value or less.
B.
Manufacturer's Field Service: Engage a factory-authorized service representative to inspect fieldassembled components and equipment installation, including connections. Report results in writing.
All field tests shall be witnessed by the University. All reports shall be given to the University.
C.
Acceptance Testing Agency: Transformer field testing shall be performed under provisions of
Division 1Section 01400 and in accordance with ANSI/IEEE C57.12.91, and as described herein.
All inspections, tests, and reports shall be completed and submitted prior to transformer installation.
Contractor shall engage a qualified testing and inspecting agency to perform the following field tests
and inspections and prepare test reports:
1.
Mechanical Inspections and Electrical Tests:
a.
Verify operation of pressure relief device.
b.
Verify tightness of accessible bolted electrical connections by calibrated torque-wrench
method in accordance with manufacturer's published data or Table 100.12 (NETA ATS
– 2003).
c.
Verify correct liquid level in all tanks and bushings.
d.
Perform insulation-resistance tests, winding-to-winding and each winding-to-ground
with test voltage in accordance with Table 100.5 (NETA ATS – 2003). Calculate
polarization index.
e.
Perform a turns-ratio test on all no-load tap-changer positions. Verify tap setting is as
specified. Verify that winding polarities are in accordance with nameplate.
f.
Perform insulation power-factor/dissipation-factor tests on all windings and correct to
20°C in accordance with test equipment manufacturer's instructions.
g.
Perform power-factor/dissipation-factor tests on bushings and correct for 20°C in
accordance with test equipment manufacturer's instructions.
h.
Measure resistance of each high-voltage winding in each no-load tap-changer position.
i.
Perform excitation-current – tests in accordance with test equipment manufacturer's
instructions.
j.
If core ground strap is accessible, measure core insulation resistance at 500 volts dc.
k.
Remove a sample of insulating liquid in accordance with ASTM D-3613 and perform
dissolved gas analysis in accordance with ANSI/IEEE C57.104 and ASTM 3612 and the
fluid manufacturer’s guidelines. Samples containing FR3 (Envirotemp) shall be noted
on the sample container for the testing lab. Oil sampling shall be completed within 48
hours after energization. Sample shall be tested for the following:
1)
Dielectric breakdown voltage: ASTM D-1816
2)
Acid neutralization number: ASTM D-974
3)
Interfacial tension: ASTM D-971
4)
Color: ASTM D-1500
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2.
3.
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5)
Visual Condition: ASTM D-1524
6)
Moisture in oil: ASTM D-1533B
7)
Power Factor 25C ASTM D-924
Test Values:
a.
Bolt-torque levels shall be in accordance with Table 100.12 (NETA ATS – 2003) unless
otherwise specified by manufacturer.
b.
Insulation-resistance test values at 1 minute should not be less than values recommended
in Table 100.5 (NETA ATS – 2003).
c.
The polarization index shall be greater than 1.0 and should be compared to
manufacturer's factory test results. If manufacturer's data is not available, acceptance
test results will serve as baseline data.
d.
Turns-ratio test results shall not deviate more than 1/2% from either the adjacent coils or
the calculated ratio.
e.
Maximum power factor of liquid-filled transformers corrected to 20°C shall be in
accordance with transformer manufacturer's published data. Representative values are
indicated in Table 100.3 (NETA ATS – 2003). Compare with test equipment
manufacturer's published data.
f.
Investigate bushing power factors and capacitances that vary from nameplate values by
more than 10%. Investigate any bushing hot collar watts-loss results that exceed the test
equipment manufacturer's published data.
g.
Typical excitation-current test data pattern for three-legged core transformer is two
similar current readings and one lower current reading.
h.
Consult manufacturer if temperature – corrected winding-resistance measurements vary
more than 1% from factory data.
i.
Consult manufacturer if core insulation is less than 1 megohm at 500 volts dc.
j.
Insulating liquid shall comply with Table 100.4 (NETA ATS – 2003).
k.
Evaluate results of dissolved-gas analysis in accordance with IEEE Standard C57.104.
Use results as baseline for future tests.
Test and adjust controls and safeties. Notify the Owner of any malfunctioning controls or
equipment.
D.
Remove malfunctioning equipment, repair/replace, and retest as specified above.
E.
Test Reports: Submit two final reports that include the following:
1.
Test procedures used. Include all test equipment with calibration data.
2.
Test results that comply with requirements.
3.
Test results that do not comply with requirements and corrective actions taken to achieve
compliance with requirements.
3.6
DEMONSTRATION
A.
Acceptance Demonstration: Upon completion of the work, at a time to be designated, the Contractor
shall demonstrate to UCB the operation of the equipment in accordance with Division 1, Section
“Operating and Maintenance Data.”
B.
The Contractor shall furnish the services of a manufacturer’s representative for instruction of UCB
personnel in the operation and maintenance of the transformer and accessories.
C.
Instruction shall be given when the installation has been completed.
Contractor shall be present during the instruction period.
MEDIUM-VOLTAGE TRANSFORMERS
A representative of the
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END OF SECTION 16 32 00
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SECTION 16 36 60 – MEDIUM-VOLTAGE CABLE
PART 1 – GENERAL
1.1
A.
1.2
SUMMARY
Section includes medium-voltage cable and accessories. Delivery of conductors to the job site shall be on
non-returnable wooden reels with heavy-duty cardboard as a protective covering for the cable.
RELATED DOCUMENTS
A.
Drawings and general provisions of Contract, including Division 1 Specifications, apply to work of this
section and Division 16.
B.
Related sections:
1.
Section 16100 "Raceways".
1.3
REFERENCES
A.
NFPA 70 (National Fire Protection Association) – National Electrical Code
B.
ANSI C2 (American National Standards Institute) – National Electrical Safety Code
C.
IEEE 48 (Institute of Electrical and Electronics Engineers) - Test Procedures and Requirements for HighVoltage Alternating-Current Cable Terminations
D.
NEMA WC 8 (National Electrical Manufacturers Association) - Ethylene-Propylene-Rubber-Insulated
Wire and Cable for the Transmission and Distribution of Electrical Energy
E.
ICEA Publications. S-94-649 (Insulated Cable Engineers Association Inc.)
F.
UL 1072 (type MV-105)
G.
AEIC CS8-00 (Association of Edison Illuminating Co.)
H.
ASTM B-8
I.
NETA ATS (International Electrical Testing Association) - Acceptance Testing Specifications for
Electrical Power Distribution Equipment and Systems (International Electrical Testing Association)
1.4
SUBMITTALS
A.
Refer to Division 1 Section 01300 “Submittal Procedures” and Division 16, Section “Basic Electrical
Requirements.”
B.
Product Data: Submit for cable.
C.
Test Reports: Indicate results of cable Hi Pot test in tabular form and in plots of current versus voltage for
incremental voltage steps, and current versus time at 30 second intervals at maximum voltage.
MEDIUM-VOLTAGE CABLE
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D.
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Provide six copies of cable pulling maximum tension readings. Provide dynamometer readings for each
cable pull.
QUALIFICATIONS
A.
Manufacturer: Company specializing in manufacturing products specified in this section with minimum
10 years’ documented experience.
B.
Splicing Qualifications: Contractor shall be certified in splicing medium-voltage cables by UCB highvoltage shop per UCB Standard 16010, Part 3.01.D.3. A certification card is required for all personnel
proposed by the Contractor to perform cable splicing.
C.
Termination Qualifications: In addition to the demonstration of splicing qualifications described above,
the Contractor shall provide sufficient documentation or demonstrate to the satisfaction of the UCB highvoltage shop the capabilities of personnel proposed by the Contractor to terminate cables (load break and
dead break connectors).
1.6
A.
SPECIAL WARRANTIES
In addition to warranties as identified in the general conditions, Manufacturer shall warranty cable for a
period of 25 years. Warranty shall include cable replacement and labor.
PART 2 - PRODUCTS
2.1
MEDIUM-VOLTAGE CABLE
A.
Manufacturers: Okonite, Kerite and Prysmian Power Cable and Systems.
1.
Okoguard URO-J or approved equal.
B.
Description: Ethylene propylene rubber insulated cable, UL listed as Type MV-105 (NEMA WC 8).
1.
Voltage: 15 kV, ungrounded.
2.
Conductor: Copper or Aluminum, stranded, compact Class B, size as indicated on drawings or per
Director of Utility Services.
3.
Construction: Single conductor.
4.
Strand Screen: Extruded semi-conducting strand screen meeting ICEA S-94-649, AEIC CS8-00,
and UL 1072 (Type MV-105).
5.
Insulation: 220 mil, 133% ethylene propylene rubber (EPR), with extruded semi-conducting
ethylene propylene insulation screen per ICEA S-94-649, AEIC CS8-00, and UL 1072. The
ethylene content of the elastomer used in the insulation compound shall not exceed 72% by weight
nor shall the insulation compound contain any polyethylene. Insulation compound must be
manufactured at the same facility as the cable.
6.
Insulation Screen: Extruded semi-conducting EPR insulation screen directly over insulation. The
screen shall meet ICEA S-94-649, AEIC CS8-00, and UL 1072 (Type MV-105).
7.
Shield: 1/3 Neutral, qty. 11 #14 bare copper round wires.
8.
Jacket: FR-PVC Okoseal or equal, low-density polyethylene, with three red extruded stripes per
ICEA S-94-649, UL 1072, and UL listed type MV-105. Jacket shall be cable tray rated.
9.
Temperature: 105°C continuous operating; 140°C emergency rating; 250°C short circuit
conditions.
MEDIUM-VOLTAGE CABLE
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10.
11.
12.
13.
14.
2.2
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Quality Assurance: Cable shall be manufactured and tested under control of a quality Assurance
program which meets the requirements of ISO-9001.
Cable Identification: Each reel of cable furnished shall be newly manufactured (no more than
12 months old), and shall bear a tag containing name of manufacturer, NEC designation, and year
of manufacture.
4/0 copper.
Shield / concantric neutral shall be bare copper round wire, 1/3 neutral to be connected to primary
grounding system utilizing split bolts.
The medium voltage system shall be designed for 600A service unless approved by Utility
Services.
TERMINATIONS
A.
Acceptable Manufacturer: Elastimold, Cooper.
1.
Load Break Elbow:
a.
Molded rubber load-break separable elbow-type connector. Thermoset are quenching
material. Each elbow shall have capacitive tests point. Elbow to be compatible with cable,
fault current rating and current rating.
B.
Load Break Elbows: For 2/0 cable terminations at transformers, 200A 15 kV Class load break separable
elbow-type connector in kit form with elbows, cable adapter for 220 MIL cable insulation, insulated cap
with test point fault indicator, connecting plugs with thermoset arc quenching material, and other
accessories required for a complete installation.
1.
These connectors shall be sized to terminate 15 kV specified cable on 15 kV Class electrical
equipment in vaults, pad-mounted switches and transformers.
2.
The elbow connectors shall provide three-phase rated shielded insulated dead-front connections,
hot-stick operated, meeting the requirements of ANSI/IEEE Standard 386. When mated with
proper bushings, bushing insert, junctions, or stand-off bushings, the load break elbows provide a
fully shielded submersible, separable connection for load break operations.
3.
The elbow shall be equipped with a pull eye for hot-stick operation. The pull eye shall be stainless
steel re-enforced.
a.
Each elbow shall be equipped with a test point fault indicator (Cooper Power STAR type or
equivalent).
1)
S-STAR FCI Line
2)
T-Test Point Reset
3)
L-Trip Rating 400 Amps
4)
O-Trip Rating 400 Amps
5)
A-Options standard indicator with auxiliary contacts
b.
Each elbow shall be equipped with a grounding tab molded into the semi-conductive shield
for the connection of the ground wire for dead-front construction
4.
Each termination shall include a loadbreak feed-thru insert, one side for cable termination and the
other fitted with an insulated cap with ground (for future lightning arrestor).
5.
Ratings:
a.
Voltage class: 15 kV
b.
Max. phase & phase voltage: 14.4 kV
c.
Max. voltage to ground: 8.3 kV
d.
AC 60 HZ minute withstand: 34 kV
e.
15 minute dc withstand: 53 kV
f.
BIL: 95 kV
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g.
h.
i.
j.
k.
6.
C.
2.3
A.
Minimum corona level: 11 kV
Continuous current rating: 200A RMS
Operations @ 200A, 14.4 kV: 10
Sym. Fault closure, @ 14.4 kV: 10 KA RMS
Symmetrical for 0.17 second – short time, and 3.5 KA RMS; symmetrical at 3.0 seconds: 10
KA RMS
Production Tests: Manufacture testing of the product shall be in accordance with ANSI/IEEE 386
and shall include a 60 Hz AC/minute withstand at 34 kV and an 11 kV minimum corona level test.
Dead Break Connectors: For cable terminations at transformers, IEEE 386, 15 kV 600-amp dead break
molded-rubber cable termination in kit form with elbows, cable adapter for 220 MIL cable insulation,
insulated cap with test point fault indicator, connecting plugs, and other accessories required for a
complete installation.
1.
These connectors shall be sized to terminate 15 kV specified cable on 15 kV Class electrical
equipment in vaults, pad-mounted switches and transformers.
2.
The elbow connectors shall provide three-phase rated shielded insulated dead-front connections,
meeting the requirements of ANSI/IEEE Standard 386.
3.
Each connector shall be equipped with a test point fault indicator on T body (Cooper Power STAR
type or equivalent).
a.
S-STAR FCI line
b.
T-Test point reset
c.
L-Trip rating 400 amps
d.
O-Trip rating 400 amps
e.
A-Options standard indicator with auxiliary contacts
4.
Each termination shall include a bolted reducing tap plug (200A reducer) with insulated cap and
test point.
5.
Ratings:
a.
Voltage Class: 15 kV
b.
Max. Phase & Phase Voltage: 14.4 kV
c.
Max. Voltage to Ground: 8.3 kV
d.
AC 60 HZ Minute Withstand: 34 kV
e.
15 Minute dc Withstand: 53 kV
f.
BIL: 95 kV
g.
Minimum Corona Level: 11 kV
h.
Continuous Current Rating: 600A RMS
i.
24 Hour Overload: 1000A RMS
j.
Short Time Withstand: 40 KA RMS Symmetrical for 0.20 s; 27 KA RMS Symmetrical for
4.0 s.
6.
Production Tests: Manufacture testing of the product shall be in accordance with ANSI/IEEE 386
and shall include 60 HZ AC/Minute withstand at 34 kV and 11 kV minimum corona level test.
7.
Dead Break Elbow:
a.
Molded rubber separable elbow-type connectors conforming to IEEE Standard 386. Provide
test point on T body for fault current indicator.
b.
Provide 600 to 200 amp adapters for each 600 amp elbow installed on transformers when
lightning arrestors are required.
SPLICE KITS
Acceptable Manufacturer: Canusa, Raychem or Elastimold.
MEDIUM-VOLTAGE CABLE
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Canuse or Raychem Terminations:
a.
Kit form, heat shrink, or cold shrink, suitable for use with cable specified, including stress
tube, ground kit, non-tracking skirts, and appropriate lug. Zipper type outer jacket not
allowed.
B.
Splice kits shall contain all necessary components to reinstate primary cable insulation, metallic shielding,
and overall jacket to the equivalent of the cable itself. Splices shall be of a uniform cross-section and
shall consist of heat-shrinkable radiation cross-linked insulation. The outer insulating layer shall be
bonded to a conducting layer for shielding. The splice shall be re-jacketed with a heavy-wall, heatshrinkable sealant lined sleeve to provide a waterproof hot melt adhesive seal. Splices shall contain heatshrinkable radiation cross-linked high dielectric constant linear stress-relief material. Splices shall contain
a high relative permittivity electric stress-relief mastic for insulation shield cutback treatment and a heatactivated sealant for environmental sealing.
C.
Kits shall be factory-engineered and shall accommodate any common form of cable shielding or
construction without the need for special adaptors. Kits shall accommodate a wide range of cable sizes
and be completely independent of cable manufacturers’ tolerances. Kits shall allow splicing cables with
different types of insulation, conductor sizes, and shielding construction, including lead, EPR, or cables of
dissimilar materials.
D.
The kits shall utilize UL listed compression copper connectors. The connector shall be compressed using
a “hyground compression tool.” Dieless tools will not be accepted. The connector and tool shall be of the
same manufacturer. The compression tool shall have documentation showing calibration certification
within a six-month period prior to usage on this project. All compressions shall be clearly marked by the
compression die to identify proper size and proper compression. Any compression connectors found not
to comply shall be removed and reinstalled at the Contractor’s expense.
E.
Splice kits shall have 220 mils nominal insulation thickness and conform to the requirements of the cable
provided.
PART 3 - EXECUTION
3.1
EXAMINATION
A.
Verify cable routing and available wall space inside manholes prior to beginning work.
B.
Verify routing of duct bank, transformer locations, etc. against existing underground site utilities. Notify
the Architect/Engineer of any potential conflicts.
C.
Verify routing and termination locations of cable prior to rough-in.
D.
Verify duct and manholes are ready to receive cable.
3.2
PREPARATION
A.
Use mandrel to clean conduits and ducts before pulling cables.
B.
Coordinate equipment setup, pulling procedures, traffic control, etc., with the UCB Project Manager at
least two weeks prior to excavation and/or pulling cable.
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INSTALLATION
A.
Three single conductor, 15 kV cables shall be pulled together in the same duct, cable support, and sleeve.
The bend radius of any cable shall not be less than ten times the cable diameter or as recommended by
the manufacturer.
B.
Pulleys or blocks shall be used for alignment of the conductors when pulling. Pulling shall be in
accordance with manufacturer's specifications regarding pulling tensions, bending radii of the cable, and
compounds.
C.
Pulling compounds must be used to ease in the installation of cable. Pulling compound residue must be
cleaned from conductors and raceway entrances after the cable is pulled in place.
D.
Avoid abrasion and other damage to cables during installation.
E.
A dynamometer shall be utilized in all high-voltage cable pulls greater than 200 feet or incorporating
three or more 90-degree bends to ensure that the maximum allowed cable tension is not exceeded.
Record the maximum strain of each pull. Cable tensions will not exceed manufacturer's
recommendations.
F.
Seal medium-voltage cable ends during and after the pull. Apply high-voltage putty or silicone caulking
at each end, and then overwrap each end with tape to keep out moisture. For longer-term storage, provide
cable end sealing caps to prevent water ingress and maintain cable integrity.
G.
Install cables in a delta formation along walls, supported by cable saddles or racks in manholes as shown
on the drawings. Securely lace cables to supports after fireproofing. Maintain separation of loop
segments as much as practical. Where one set of cables crosses another set or runs parallel to another set,
maintain a minimum separation of four inches.
H.
Arrange cable in manholes to avoid interference with duct entrances.
I.
Ground cable shield at each termination and splice.
J.
Prepare high-voltage cable for terminating per manufacturer's recommendations.
K.
Install rubber and heat shrink termination and splice kits per manufacturer's recommendations.
L.
All tool-applied compression connectors shall be applied per manufacturer's recommendations and
physically checked for tightness.
M.
All cables shall be individually fireproofed for their entire length exposed in each manhole. Extend
fireproofing 1 inch into conduits. Attach cable tag outside of fireproof tape. At cable ground
connections, the cable ground wire shall be wrapped with plastic tape to minimize the possibility of
corrosion from the fireproofing materials and moisture. Cables shall be fireproofed with Scotch 3M, type
77 tape, or approved equal, and shall be installed in accordance with the manufacturer’s instructions.
Tape shall not be less than 30 mils thick with a 50% overlap. Bind in place with Scotch 69 glass cloth
tape.
N.
Identification shall be provided for all cables. Include phase (A, B, or C) and circuit number
identification tags at each junction or pull point.
MEDIUM-VOLTAGE CABLE
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O.
Require shield/concentric neutral to be terminated to primary 1/0 ground system using 1 inch flat braid
ground. The shield/concentric neutral shall not substitute the 1/0 grounding conductor required in all 15
kV raceways.
P.
Required that cables be pulled using suitable lubrications and cable pulling equipment. Do not exceed
cable pulling tensions and bending radius recommended by manufacturer.
Q.
Require installation of phase and cable number identification brass tags at each junction or pull point.
Require contractor to identify cable phase colors as A phase Red, B phase White and C phase Blue.
R.
Cables shall be installed inside conduit per UCB Standards 16110. Cable shall not be run through a
building unless approved by the Director or Utility Services.
3.4
FIELD QUALITY CONTROL
A.
Inspect cable and terminations for physical damage.
B.
When all terminations and splices have been made, all new cables shall be tested prior to connections to
equipment. Refer to NETA ATS, 2003, Part 7.3.3. DC Hi Pot testing shall be performed by the
Contractor. Perform DC HiPot tests of each conductor, with other conductors grounded. Apply test
voltage in 5 kV increments to maximum test voltage. Record leakage current at each increment, allowing
for charging current decay. Hold maximum test voltage for ten minutes. Do not exceed manufacturer’s
recommended maximum test voltage.
C.
Do not apply high potential DC voltage to existing cables. Test new cables prior to splicing into existing
cables. If found to be defective by these tests, all new cables, when furnished and installed by Contractor,
shall be replaced by the Contractor at no cost to UCB.
D.
All tests shall be performed in the presence of a representative of the UCB high-voltage shop.
E.
Inspect cable for proper connections as indicated.
F.
Inspect shield grounding, cable supports, and terminations for proper installation.
G.
Perform shield continuity tests and investigate resistance values in excess of 10 ohms per 1000 feet.
H.
Perform phasing checks.
I.
Inspect fire tape has been installed per specification.
J.
Inspect labeling.
K.
Test Report: Upon completion of the tests performed by the Contractor (cable Hi Pot and tension
measurements), six copies of complete test reports shall be forwarded to UCB and the Architect/Engineer.
Reports shall show date of test, circuit numbers, test voltages, and leakage currents measured. The report
shall also provide conclusions and recommendations for corrective action as appropriate.
L.
Contractors personnel performing splices and terminations shall be certified by UCB high voltage shop
per UCB Standard 16010.3.01.D.3.
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END OF SECTION 16 36 60
MEDIUM-VOLTAGE CABLE
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SECTION 16 39 00 – PRIMARY GROUNDING
PART 1 – GENERAL
1.1
SUMMARY
A.
This Section includes grounding of medium voltage electrical systems and equipment. Grounding
requirements specified in this Section may be supplemented in other Sections of these
Specifications.
B.
The medium voltage system utilized on the UCB campus is 13,800/7960 Volt, Wye connected. The
neutral of this system serves as the ground for the system. The overall system ground resistance is
improved with the addition of ground rods at service transformers. The system is grounded at the
engineering switchgear and carried via 600v 1/0 insulated ground cable to all medium voltage
system equipment, raceways and the phase conductor cable shield concentric neutral.
NOTE: Extreme caution should be exercised when working with this system neutral/ground as 7960
volts maybe present if opened.
1.2
A.
1.3
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this Section.
REFERENCES
A.
ANSI/IEEE C2 (American National Standards Institute) – National Electrical Safety Code
B.
NFPA 70 (National Fire Protection Association) – National Electrical Code
C.
ANSI/IEEE 80 (American National Standards Institute) – Guide for Safety in Substation Grounding
D.
ANSI/IEEE 81 (American National Standards Institute) – Guide for Measuring Earth Resistivity,
Ground Impedance, and Earth Surface Potentials of a Ground System.
E.
ANSI/IEEE 32 - Requirements, Terms and Test Procedures for Neutral Grounding Devices.
F.
UL 467 – Grounding and Bonding Equipment
G.
University of Colorado Boulder - Utility Standard EO-110-A Rev. 0.
1.4
SUBMITTALS
A.
Submit each item in this Article according to the Conditions of the Contract and Division 1
Specifications.
B.
Field tests and observation reports certified by the testing organization and indicating and
interpreting the test reports for compliance with performance requirements.
PRIMARY GROUNDING
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Project Record Documents: Submit documents under provisions of Division 1, Section 01300
“Submittal Procedures.” Red-lines shall include accurate locations of neutral and equipment
grounding points and grounding electrodes.
QUALITY ASSURANCE
A.
Comply with latest edition of the National Electrical Code (NFPA 70).
B.
Comply with UL 467 and ANSI/IEEE C2.
C.
Listing and Labeling: Provide products specified in this Section that are listed and labeled. The
Terms "Listed" and "Labeled" shall be as defined in the National Electrical Code, Article 100.
PART 2 – PRODUCTS
2.1
GROUNDING ACCESSORIES
A.
Ground rods and connectors are specified in Division 16 Section 16450, Section “Secondary
Grounding.”
B.
Use only copper wire for both insulated and bare grounding conductors in direct contact with earth,
concrete, masonry, crushed stone and similar materials. Low voltage conductors and cables are
specified in Division 16, Section “Common Work Results for Electrical.”
C.
Ground Rods shall be minimum 3/4 inch and 10 foot long.
D.
Ground Rod connectors of mechanical (only in visible locations) or exothermal weld type may be
used.
E.
Ground Rod 15kV Required Locations:
1. Transformers
2. Switches
3. Vaults
4. Manholes
2.2
A.
2.3
GROUND BUS
Provide a grounding bus in all electric rooms in the Facility. The ground bus shall be connected by
the proper sized grounding conductor and directly connected to the building's main grounding
system.
CONNECTOR PRODUCTS
A.
Compression Connectors: Compression materials, accessories, and tools for preparing and making
permanent field connection between ground conductors (new or existing) and new conductors.
System shall be Burndy Hyground, or approved equal.
B.
Mechanical Connectors: Bronze connectors, suitable for grounding and bonding applications, in
configurations required for particular installation.
PRIMARY GROUNDING
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Exothermic-Welded Connections: Provided in kit form and selected per manufacturer's written
instructions for specific types, sizes, and combinations of conductors and connected items.
PART 3 – EXECUTION
3.1
APPLICATION
A.
General: Provide a complete grounding system in accordance with the minimum code requirements
and as further indicated on the drawings or specified. The equipment ground consists of metallic
connections to ground of non-current-carrying metal parts of the wiring system or apparatus
connected to the system. The primary purpose of equipment grounding is to provide greater safety
by limiting the electrical potential between noncurrent-carrying parts of the system, and to provide a
low impedance path to ground for possible ground fault current.
B.
System Ground Points: Re-establish ground points as specified for interconnection of the equipment
grounding system in each transformer.
3.2
INSTALLATION
A.
General: Ground electrical systems and equipment according to NEC requirements, except where
Drawings or Specifications exceed NEC requirements.
B.
Install neutral grounding equipment in accordance with UCB Standards diagrams.
C.
Grounding Rods: Install two rods, each at opposite corners of the transformer compartment.
1.
Verify final backfill and compaction has been completed before driving rod electrodes.
2.
Drive until tops are 2 inches below finished floor or final grade, except as otherwise indicated.
3.
Interconnect with grounding-electrode conductors. Use exothermic welds, except as
otherwise indicated. Make these connections without damaging copper coating or exposing
steel.
D.
Grounding Conductors: Route along the shortest and straightest paths possible, except as otherwise
indicated. Avoid obstructing access or placing conductors where they may be subjected to strain,
impact, or damage. The grounding conductors shall be insulated or bare, tinned copper, sized in
accordance with NEC 250-94 (a), including the conductor for the made electrode. The conductors
shall be continuous without joint or splice, and shall be bonded to the conductor at each end. All
connections shall be available for inspection and maintenance.
E.
Connect the primary cable neutral conductor to ground electrodes at transformer terminations and
manhole splices.
3.3
A.
CONNECTIONS
General: Make connections so possibility of galvanic action or electrolysis is minimized. Select
connectors, connection hardware, conductors, and connection methods so metals in direct contact
will be galvanically compatible.
1.
Use electroplated or hot-tin-coated materials to assure high conductivity and to make contact
points closer in order of galvanic series.
PRIMARY GROUNDING
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Make connections with clean, bare metal at points of contact.
B.
Exothermic-Welded Connections: Use for connections to structural steel and for underground
connections. Comply with manufacturer's written instructions. Welds that are puffed up or that
show convex surfaces indicating improper cleaning are not acceptable.
C.
Moisture Protection: Where insulated grounding conductors are connected to grounding rods or
grounding buses, insulate entire area of connection and seal against moisture penetration of
insulation and cable.
3.4
FIELD QUALITY CONTROL
A.
Grounding resistance testing shall be performed by the Contractor. Inspect and test grounding in
accordance with NETA standards and specifications Division 1 and Division 16, Section “Testing
and Commissioning.” Field testing will be performed under provisions of Section 01400.
B.
Testing Witness: Ground resistance testing shall be performed in the presence of a representative of
the Department of Facilities Management. Provide at least two weeks notice prior to testing.
C.
Tests: Measure ground resistance not less than two full days after the last trace of precipitation, and
without the soil being moistened by any means other than natural drainage or seepage and without
chemical treatment or other artificial means of reducing natural ground resistance. Perform fall of
potential test on main system and the 2-point method to determine resistance between main system
and neutral according to ANSI/IEEE 81. Test cable and grounding systems in accordance with
NETA ATS Section 7.14 for electrical power distribution equipment.
D.
Maximum acceptable grounding to resistance shall be 5 ohms for distribution systems, 1 ohm or less
for generating transmission station grounds. Investigate levels which exceed the above values.
E.
Excessive Ground Resistance: Where resistance to ground exceeds specified values, notify UCB
promptly and include recommendations to reduce ground resistance and to accomplish
recommended work.
F.
Report: Prepare test reports of ground resistance at each test location. Include observations of
weather and other phenomena that may affect test results. Describe measures taken to improve test
results.
END OF SECTION 16 39 00
PRIMARY GROUNDING
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SECTION 16 41 00 – ENCLOSED SWITCHES AND CIRCUIT BREAKERS
PART 1 – GENERAL
1.1
A.
1.2
A.
1.3
A.
1.4
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this section.
SUMMARY
Section Includes: This section includes requirements for individually mounted and enclosed fused
and non-fused disconnect switches, fuses, and circuit breakers for disconnecting and protecting
services, feeders, branch circuits, and utilization equipment.
REFERENCES
The latest edition of the following standards and codes, standard publications of professional
organizations, and the local authorities having jurisdiction are the minimum requirements for this
work.
1.
American National Standards Institute (ANSI)
2.
Institute of Electrical and Electronic Engineers (IEEE)
3.
National Electrical Manufacturer's Association (NEMA)
4.
National Fire Protection Association (NFPA)
5.
NFPA 70, the National Electrical Code (NEC)
6.
Underwriters Laboratories, Inc. (UL)
7.
State, city, and local authorities
DEFINITIONS
A.
FDS: Fused Disconnect Switch
B.
NFDS: Non-fused Disconnect Switch
C.
RMS: Root Mean Square
D.
SPDT: Single-pole Double-throw
1.5
A.
SUBMITTALS
General:
1.
Submit each item in this Article according to the Conditions of the Contract and Division 1
Specification Sections.
2.
All exceptions to this specification shall be given in written format referencing the section and
paragraph and stating the proposed alternative to the requirement.
3.
The information continued in the submittal shall be complete in every respect, as partial
submittals shall be cause for rejection.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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Product data for disconnect switches, circuit breakers, and accessories specified in this section as
follows:
1.
Descriptive data and ratings for voltage, continuous current, maximum horsepower, and shortcircuit rating.
2.
Dimensional plans, elevations, sections, and details.
3.
NEMA enclosure type and size.
4.
Cable terminal size, number, and material.
5.
Unit wiring diagrams depicting local and remote devices.
6.
Accessories device descriptive bulletins and product data sheets (i.e. shunt trip coil,
undervoltage release, ground fault, auxiliary contacts, key interlocks, etc.).
QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B.
Comply with NFPA 70, the National Electrical Code.
C.
All equipment and materials will be new and unused and shall conform to the current applicable
industry standards. Workmanship and neat appearance shall be as important as electrical and
mechanical operation. Defective or damaged materials shall be replaced or repaired prior to final
acceptance in a manner meeting approval of Architect and/or Engineer and at no additional cost to
Owner.
PART 2 – PRODUCTS
2.1
MANUFACTURERS
A.
Disconnect Switches and Circuit Breakers: Acceptable manufacturers are listed below.
disconnect and circuit breakers shall be of the same manufacturer.
1.
Cutler-Hammer
2.
ITE/Siemens
3.
Square D Company
B.
Fuses: Acceptable manufacturers are listed below. All fuses shall be of the same manufacturer.
1.
Bussman
2.
Gould Shamut
3.
Littlefuse
2.2
A.
All
DISCONNECT SWITCHES
Enclosed fusible and non-fusible switches, 1200-amp and smaller, NEMA KS1, heavy duty type
with lockable handle, quick make, quick break, 600-volts, horsepower rated for motors as required.
Number of poles and ampacity as noted or required by code. Short-circuit rating shall be sufficient
to withstand the available fault current or let-through current before the fuse melts without damage
or change in rating.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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B.
Fusible switches 30- through 600-amperes shall be furnished with rejection class "R" or "J" type
fuse clips and 800 through 1200 amperes shall be furnished with class "L" type fuse clips.
C.
Switches shall incorporate a safety cover interlock to prevent opening the cover with the switch in
the "ON" position or prevent placing the switch in the "ON" position with the cover open. Provide a
“defeater” for authorized personnel.
D.
Handles shall have provisions for padlocking and shall clearly indicate the ON and OFF positions.
Front cover doors shall be pad lockable in the closed position.
2.3
FUSES
A.
Fuses shall be Class K-1 and K-5 of rejection type for 600 amperes and below and Class L for over
600 amperes. Fuse voltage class shall be either 250 volt or 600 volt and shall be applied according
to circuit voltage.
B.
Coordinate the low-voltage fuses required for the project to provide basic selective protection and
properly coordinate with the other associated protective equipment.
2.4
A.
CIRCUIT BREAKERS
General:
1.
Provide 600-volt enclosed molded case circuit breaker per NEMA AB1 with lockable handle
with frame size, trip rating, number of poles, and interrupting rating to meet available fault
current. Application listing shall be appropriate for switching fluorescent lighting loads or
heating, air conditioning, and refrigerating equipment.
2.
Circuit breakers shall be operated by a toggle-type handle and shall have a quick-make, quickbreaker over-center switching mechanism that is mechanically trip-free. Automatic tripping of
the breaker shall be clearly indicated by the handle position. Contacts shall be nonwelding
silver alloy and arc extinction shall be accomplished by means of arc chutes. A push-to-trip
button on the front of the circuit breaker shall provide a local manual means to exercise the
trip mechanism.
3.
Thermal-magnetic Circuit Breakers: Frame sizes 400 amp and smaller shall have inverse
time-current element for low-level overloads, and instantaneous magnetic trip element for
short circuits. Adjustable magnetic trip setting for circuit-breaker frame sizes 250 amp and
larger.
4.
Adjustable Instantaneous-trip Circuit Breakers: Magnetic trip element with front-mounted,
field-adjustable trip setting.
5.
Electronic Trip Unit Circuit Breakers: Frame sizes 600 amp and larger shall have RMS
sensing; field-replaceable rating plug; with the following field-adjustable settings as noted on
the drawings by L, S, I, and G.
a.
Instantaneous trip
b.
Long- and short-pickup levels
c.
Long- and short-time adjustments
d.
Ground-fault pickup level, time delay, and I2t response
6.
Current-limiting Circuit Breakers: Frame sizes 400 amp and smaller; let-through ratings less
than NEMA FU 1, RK-5.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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8.
9.
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Integrally Fused Circuit Breakers: Thermal-magnetic trip element with integral limiter-style
fuse listed for use with circuit breaker; trip activation on fuse opening or on openings of fuse
compartment door.
GFCI Circuit Breakers: Single- and two-pole configurations with 5-mA trip sensitivity for
personal protection and 30 mA trip sensitivity for equipment protection.
Molded-case Switch: Molded-case circuit breaker without trip units.
Circuit-breaker Features and Accessories: Standard frame sizes, trip ratings, and number of poles.
1.
Lugs: Mechanical style suitable for number, size, and material of conductors.
2.
Application Listing: Appropriate for application; Type SWD for switching fluorescent
lighting loads; Type HACR for heating, air-conditioning, and refrigerating equipment.
3.
Ground-fault Protection: Integrally mounted relay and trip unit with adjustable pickup and
time-delay settings, push-to-test feature, and ground-fault indicator.
4.
Communication Capability: Dinrail-mounted communication module with functions and
features compatible with power monitoring and control system.
5.
Shunt Trip: 120-volt trip coil energized from separate circuit, set to trip at 55 percent of rated
voltage.
6.
Undervoltage Trip: Set to operate at 35 to 75 percent of rated voltage with field-adjustable
0.1- to 0.6-second time delay.
7.
Auxiliary Switch: Two SPDT switches with "a" and "b" contacts; "a" contacts mimic circuitbreaker contacts, "b" contacts operate in reverse of circuit-breaker contacts.
8.
Key Interlock Kit: Externally mounted to prohibit circuit-breaker operation; key shall be
removable only when circuit breaker is in off position.
9.
Zone-selective Interlocking: Integral with electronic trip unit; for interlocking ground-fault
protection function.
ENCLOSURE
NEMA AB 1 and NEMA KS 1 to meet environmental conditions of installed location.
1.
Outdoor Locations: NEMA 250, Type 3R.
2.
Kitchen Areas: NEMA 250, Type 4X, stainless steel.
3.
Other Wet or Damp Indoor Locations: NEMA 250, Type 4.
4.
Hazardous Areas Indicated on Drawings: NEMA 250, Type 7 for Class I Groups A, B, C, D.
5.
Hazardous Areas Indicated on Drawings: NEMA 250, Type 9 for Class II Group E, F, or G.
6.
Indoor use for protection against dust, falling dirt, and/or dripping non-corrosive liquids;
NEMA 250, Type 12
PART 3 – EXECUTION
3.1
INSTALLATION
A.
Comply with mounting and anchoring requirements specified in Division 16, Section “Basic
Electrical Requirements.”
B.
Install devices in general area of equipment and accessible to maintenance personnel according to
manufacturer's written instructions. Secure devices firmly to supporting structure with approved
fasteners in a level and plumb manner. Verify voltage and amperage size and enclosure type of
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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devices for each installation. Where practical, devices shall be mounted such that the top of switch
is a maximum of 6'-0" above finished floor or surface.
C.
Connect devices to wiring system and to ground as indicated and instructed by manufacturer.
Tighten electrical connectors and terminals according to manufacturer's published torque-tightening
values. Where manufacturer's torque values are not indicated, use those specified in UL 486A and
UL 486B.
D.
Identify each device according to requirements in other sections of these specifications.
3.2
A.
3.3
A.
3.4
OVERCURRENT PROTECTIVE DEVICES
Install fuses where required as a protective device in conformance with equipment manufacturer's
specified requirements and in accordance with the requirements of this section.
EQUIPMENT CONNECTIONS
Provide all final power connections for mechanical equipment. All equipment items will be
furnished and set by others. Confirm with suppliers all rough-in data, e.g., electrical characteristics,
dimensions, locations, type of connection, etc., prior to installation.
FIELD QUALITY CONTROL
A.
Prepare for acceptance tests as follows:
1.
Test insulation resistance for each enclosed switch, circuit breaker, component, and control
circuit.
2.
Test continuity of each line- and load-side circuit.
B.
Testing Agency: Engage a qualified independent testing agency to perform specified testing.
C.
Testing: After installing enclosed switches and circuit breakers and after electrical circuitry has
been energized, demonstrate product capability and compliance with requirements.
1.
Procedures: Perform each visual and mechanical inspection and electrical test indicated in
NETA ATS, Section 7.5 for switches and Section 7.6 for molded-case circuit breakers.
Certify compliance with test parameters.
2.
Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance;
otherwise, replace with new units and retest.
3.5
A.
3.6
A.
ADJUSTING
Set field-adjustable switches and circuit breaker trip ranges.
CLEANING
On completion of installation, inspect interior and exterior of enclosures. Remove paint and plaster
splatters and other spots. Vacuum dirt and debris; do not use compressed air to assist in cleaning.
Repair exposed surfaces to match original finish.
END OF SECTION 16 41 00
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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SECTION 16 43 00 – METERING
PART 1 – GENERAL
1.1
SUMMARY
A.
This section includes metering requirements for new service entrance switchboard.
B.
Related Documents: Drawings and general provisions of the Contract, including General and
Supplementary Conditions and Division 1 Specifications, apply to this Section.
C.
Related Sections:
Entrance.”
1.2
Division 16, Section 16425 “Switchboards" and Section 16420 "Service
REFERENCES
A.
All equipment, assemblies, and materials shall be Underwriters Laboratories (UL) listed.
B.
National Electrical Code (NEC) (2011 Edition).
C.
National Electrical Manufacturer’s Association (NEMA).
D.
American National Standards Institute (ANSI). Instrument transformers shall be certified to comply
with ANSI C12.1. Current transformers shall be certified to comply with ANSI/IEEE C57.13 and
C37.20.
1.3
SUBMITTALS
A.
Refer to Division 1 Section 01300 “Submittals Procedures” and Division 16 Section 16016 “Basic
Electrical Requirements.”
B.
Product Data: Include construction details, material descriptions, dimensions of individual
components and profiles, and finishes. Describe electrical characteristics and features.
C.
Shop Drawings for Electricity-Metering Equipment:
1.
Dimensioned plans and sections or elevation layouts.
2.
Wiring Diagrams: Power, signal, and control wiring specific to this Project. Identify
terminals and wiring designations and color codes to facilitate installation, operation, and
maintenance. Indicate recommended types, wire sizes, and circuiting arrangements for fieldinstalled wiring, and show circuit protection features.
D.
Field quality-control test reports.
E.
Operation and Maintenance Data: For electricity-metering equipment to include in operation and
maintenance manuals.
METERING
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A.
1.5
A.
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QUALITY ASSURANCE
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
DELIVERY, STORAGE, AND HANDLING
Receive, store, and handle modular meter center as specified in NECA 400.
COORDINATION
A.
Comply with metering requirements of the UCB Utilities Generation and Distribution High Voltage
Department.
B.
Coordinate installation and connection of utilities and services, including provision for electricitymetering components.
PART 2 – PRODUCT
2.1
A.
2.2
A.
MANUFACTURER
UCB required meter shall be Power Logic 8600 series for main energy metering, Series 7300 for sub
metering, or approved equal from Manager of Utilities and Generation.
MATERIALS
Instrument Transformers:
1.
Potential Transformer:
a.
Metering Potential Transformers:
1)
Potential transformers are to be installed with all kWh meters on systems above
120/208 volts.
2)
.3 metering accuracy classes.
3)
Placed in the switch gear and protected by 1 AMP 3 pole breaker.
4)
All metering is presently 3 phase 4 wire systems.
5)
Land on (terminated at) a terminal block in the switchgear.
2.
METERING
Current Transformers: (ANSI/IEEE C57.13 & C37.20)
a.
Metering Current Transformers: Current transformers are required for any service
above 20 amps.
1)
Provide a four point shoring terminal strip for the C.T. wiring in the switchgear.
2)
Rating factor of 4.0 @ 30 degrees centigrade or 3.0 @ 55 degrees to allow greater
thermal capacity under loads at levels above 5 amps for greater billing accuracy.
3)
.3 accuracy class.
4)
Size the currant transformers according to the following power transformer sizes:
a)
1000kVA 277/480 Volt = 500:5
b)
750kVA 277/480 Volt = 400:5
c)
500kVA 277/480 Volt = 300:5
d)
300kVA 277/480 Volt = 200:5
e)
225 kVA 277/480 Volt = 100:5
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g)
h)
i)
j)
k)
l)
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150kVA 277/480 Volt = 75:5
1000kVA 120/208 Volt = 1200:5
750kVA 120/208 Volt = 1000:5
500kVA 120/208 Volt = 600:5
300kVA 120/208 Volt = 400:5
255kVA 125/208 Volt = 300:5
150kVA 120/208 Volt = 200:5
Parts List:
a.
Specified Parts:
1)
All electrical metering will required a test switch block.
b.
Test Switch:
1)
ABB Flexitest type FT-1 or other by approved from the Utility Generation &
Distribution.
2)
Each test switch shall be identified red for voltage and black for current.
3)
Each test switch shall be identified beneath test block with phenolic label:
VOLTAGE
ABC
CURRENT
AN BN CN
4.
Meter Manufacture:
a.
Power Logic 8600 series from main energy metering, series 7300 for sub metering, or
approved equal from the Manager of Utilities and Generation.
5.
Meter Specifications:
a.
Electrical meter specifications for 8600 and 7300 series metering:
1)
General:
a)
Current accuracy per meter specification 0.1% (8600), 0.25% (7300).
b)
Voltage accuracy per meter specification 0.1% (8600), 0.25% (7300).
c)
Energy and power accuracy 0.2% (8600) 0.5% (7300).
2)
Instantaneous RMS Values:
a)
Current, voltage, frequency.
b)
Active, reactive, apparent power Total and per phase.
c)
Power factor Total and per phase.
d)
Current measurement range (auto ranging) 0.01 - 20A
3)
Energy Values:
a)
Active, reactive, apparent energy.
b)
Settable accumulation modes.
4)
Demand Values:
a)
Current Present and max values.
b)
Active, reactive, apparent power Present and max values.
c)
Predicted active, reactive, apparent power.
d)
Synchronization of the measurement window.
e)
Demand modes Block, sliding.
5)
Power Quality Measurements:
a)
Harmonic distortion Current and voltage.
b)
Individual harmonics.
c)
Waveform capture.
d)
Detection of voltage swells and dips.
METERING
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6)
7)
8)
9)
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e)
Adaptive waveform capture.
f)
Detection and capture of transients.
Data Recordings:
a)
Disturbance waveform capture and power quality report.
b)
Min/max of instantaneous values.
Data Logs:
a)
Event logs.
b)
Trending.
c)
Alarms.
d)
Time stamping.
GPS Synchronization
Communication:
a)
RS 485 / RS 232 (Com 1 to 4).
b)
RS 485 port.
c)
Infrared port.
d)
Modbus protocol.
e)
Ethernet port (Modbus/TCP/IP protocol).
f)
Ethernet gateway (EtherGate)
PART 3 – EXECUTION
3.1
INSTALLATION
A.
The above instrumentation and miscellaneous equipment to installed by manufacturer of
switchboard.
B.
Shall comply with the two wiring diagrams at the end of the section.
C.
Provide potential transformer, ratio and polarity tests and wiring checks.
D.
Provide current transformer, ratio and polarity tests and wiring checks.
E.
Provide an Ethernet connection to each meter.
F.
Metering and test switch must be installed and accepted before permanent power will be established
to the facility.
G.
Meter Wiring:
1.
Stranded #14 AWG for Potentials and #12 AWG for Currents.
2.
Color coded Black (A), Red (B), Blue (C), White (N) for potentials.
3.
Color coded Brown (A), Orange (B), Yellow (C), Green (Ground) for currents.
4.
All terminations shall have compression type connectors either stud or ring type for potentials
and ring type only for current.
H.
Contractor to verify current transformer polarity to the electrical meter, changing polarity via
electrical meter software is not permitted. The same will apply for voltage potentials circuits.
I.
Install the electrical meter and the disconnect test switch at 72" or less AFF.
METERING
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J.
For all other electric meter applications and installations (i.e. sub-meters), contact Utility Services
for details.
K.
All projects shall pay a one-time utility connection fee to Utility Services for the cost and
installation of the electric meter.
END OF SECTION 16 43 00
METERING
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SECTION 16 44 10 – SWITCHBOARDS
PART 1 – GENERAL
1.1
A.
1.2
SUMMARY
Main and Distribution Switchboards rated 600V and less.
1.
System shall be factory assembled, dead front, metal enclosed, self supporting and conforming
to NEMA PB2.
2.
Depending on rating of switchboard, provide for front only accessibility or front and rear
accessibility.
3.
Bus material shall be copper. The switchboard shall be designed for future expansion, with
full size horizontal bussing throughout and extension stub outs. Coordinate bus short circuit
rating with available fault current. Sized in accordance with NEMA.PB.2.
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this Section.
B.
Related Sections:
1.
Section 16420 - Service Entrance
2.
Section 16430 - Metering
3.
Division 9 - Painting
1.3
DEFINITIONS
A.
EMI: Electromagnetic interference.
B.
GFCI: Ground-fault circuit interrupter.
C.
RFI: Radio-frequency interference.
D.
RMS: Root mean square.
E.
SPDT: Single pole, double throw.
F.
TVSS: Transient voltage surge suppressor.
1.4
A.
SUBMITTALS
Product Data: For each type of switchboard, overcurrent protective device, ground-fault protector,
accessory, and component indicated. Include dimensions and manufacturers' technical data on
features, performance, electrical characteristics, ratings, and finishes. Refer to Section 16010 Basic Electrical Requirements and Section 01300 - Submittals.
SWITCHBOARDS
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B.
Shop Drawings: For each switchboard and related equipment.
1.
Dimensioned plans, elevations, sections, and details, including required clearances and service
space around equipment. Show tabulations of installed devices, equipment features, and
ratings. Include the following:
a.
Enclosure types and details for types other than NEMA 250, Type 1.
b.
Bus configuration, current, and voltage ratings.
c.
Short-circuit current rating of switchboards and overcurrent protective devices.
d.
Metering equipment.
e.
Mimic-bus diagram.
f.
Features, characteristics, ratings, and factory settings of individual overcurrent
protective devices and auxiliary components.
2.
Wiring Diagrams: Diagram power, signal, and control wiring and differentiate between
manufacturer-installed and field-installed wiring.
3.
Include front and side views of enclosures with overall dimensions shown; conduit entrance
locations and requirements; nameplate legends; size and number of bus bars per phase,
neutral, and ground; switchboard instrument details; instruction for handling and installation
of switchboard; and electrical characteristics including voltage; frame size and trip ratings,
withstand ratings, and time-current curves of all equipment and components, including fuses
and breakers provided.
C.
Samples: Representative portion of mimic bus with specified finish, for color selection.
D.
Field Test Reports: Submit written test reports and include the following:
1.
Test procedures used.
2.
Test results that comply with requirements.
3.
Results of failed tests and corrective action taken to achieve test results that comply with
requirements.
E.
Manufacturer's field service report.
F.
Updated mimic-bus diagram reflecting field changes after final switchboard load connections have
been made, for record.
G.
Maintenance Data: For switchboards and components to include in maintenance manuals specified
in Division 1. In addition to requirements specified in Division 1, include the following:
1.
Routine maintenance requirements for switchboards and all installed components.
2.
Manufacturer's written instructions for testing and adjusting overcurrent protective devices.
3.
Time-current curves, including selectable ranges for each type of overcurrent protective
device.
1.5
A.
QUALITY ASSURANCE
Testing Agency Qualifications: Testing agency that is a member company of the InterNational
Electrical Testing Association and that is acceptable to authorities having jurisdiction.
1.
Testing Agency's Field Supervisor: Person currently certified by the InterNational Electrical
Testing Association or National Institute for Certification in Engineering Technologies to
supervise on-site testing specified in Part 3.
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B.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
C.
Comply with the following standards:
1.
NFPA 70
2.
Switchboards:
a.
NEMA PB-2
b.
UL 891
c.
UL service entrance label
3.
Overcurrent Protection Devices:
a.
Circuit Breakers: NEMA AB-1, Federal Specification W-C-375 B/GEN, UL489
b.
Switch and Fuse: UL977
4.
Testing: NETA
5.
Utility company requirements
D.
Product Selection for Restricted Space: Drawings indicate maximum dimensions for switchboards,
including clearances between switchboards, and adjacent surfaces and other items. Comply with
indicated maximum dimensions.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Deliver in sections of lengths that can be moved past obstructions in delivery path.
B.
If stored in areas subjected to weather, cover switchboards to provide protection from weather, dirt,
dust, corrosive substances, and physical damage. Remove loose packing and flammable materials
from inside switchboards; install electric heating (250-W per section) to prevent condensation.
C.
Handle switchboards according to NEMA PB 2.1.
1.7
PROJECT CONDITIONS
A.
Installation Pathway: Remove and replace access fencing, doors, lift-out panels, and structures to
provide pathway for moving switchboards into place.
B.
Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others unless
permitted under the following conditions and then only after arranging to provide temporary utility
services according to requirements indicated:
1.
Notify Architect not less than fourteen days in advance of proposed utility interruptions.
Identify extent and duration of utility interruptions.
2.
Indicate method of providing temporary utilities.
3.
Proceed with utility interruptions only after receiving Architect's written authorizations.
C.
Environmental Limitations: Rate equipment for continuous operation under the following, unless
otherwise indicated:
1.
Ambient Temperature: Not exceeding 104°F (40°C)
2.
Altitude: Not exceeding 6600 feet (2000 m)
SWITCHBOARDS
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D.
Service Conditions: NEMA PB2, usual service conditions, as follows:
1.
Altitude not exceeding 6600 feet (2,000 m).
2.
Ambient temperatures within limits specified.
E.
Electrical rooms shall not contain other systems or equipment not related to the electrical
distribution system. This shall include but not be limited to such systems as: telephone,
communications, mechanical, piping, drains, etc.
1.8
COORDINATION
A.
Coordinate layout and installation of switchboards and components with other construction,
including conduit, piping, equipment, and adjacent surfaces. Maintain required workspace
clearances and required clearances for equipment access doors and panels.
B.
Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases.
PART 2 – PRODUCT
2.1
A.
2.2
MANUFACTURERS
Subject to compliance with requirements, provide products by one of the following:
1.
Eaton Corp.; Cutler-Hammer Products
2.
Square D Co.
3.
General Electric
4.
ITE - Siemens
MANUFACTURED UNITS
A.
Front, Rear and Side Accessible Switchboard: Front and rear aligned, with features as follows:
1.
Main and Tie Devices: Drawout mounted
2.
Branch Devices: Individually compartmented and fixed mounted
B.
Nominal System Voltage: 208Y/120V, 480Y/277V as applicable.
C.
Main-Bus Continuous: See drawings.
2.3
FABRICATION AND FEATURES
A.
Switchboards shall be completely self-supporting structures of the required number of vertical
sections bolted together to form a single metal enclosed switchboard. Sides, top, and rear covers
shall be code gauge steel, bolted to the switchboard structure. The frame structure members shall be
die-formed, 12-gauge steel bolted together and reinforced at corners with rugged gussets internal to
the switchboard members.
B.
Switchboards shall be provided with adequate lifting means, and be capable of being rolled or
moved into position and bolted directly to the floor without the use of floor sills.
C.
Switchboard sections shall be aligned on top, 90 inches high, unless lower height is required due to
space limitations.
SWITCHBOARDS
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D.
Enclosure: Steel: Shall be suitable for environment, NEMA Type 1 - General Purpose or NEMA
Type 2 - Raintight.
E.
Enclosure Finish for Indoor Units: Factory-applied finish in manufacturer's standard gray finish
over a rust-inhibiting primer on treated metal surface.
F.
Insulation and isolation for main bus of main section and main and vertical buses of feeder sections.
G.
Bus Transition and Incoming Pull Sections: Matched and aligned with basic switchboard.
H.
Removable, Hinged Rear Doors and Compartment Covers: Secured by captive thumb screws, for
access to rear interior of switchboard.
I.
Hinged Front Panels:
compartments.
J.
Pull Box on Top of Switchboard: Include the following features:
1.
Adequate ventilation to maintain temperature in pull box within same limits as switchboard.
2.
Set back from front to clear circuit-breaker removal mechanism.
3.
Removable covers shall form top, front, and sides. Top covers at rear shall be easily
removable for drilling and cutting.
4.
Bottom shall be insulating, fire-resistive material with separate holes for cable drops into
switchboard.
5.
Cable supports shall be arranged to facilitate cabling and adequate to support cables indicated,
including those for future installation.
K.
Buses and Connections: Three phase, four wire, unless otherwise indicated. Include the following
features:
1.
Phase- and Neutral-Bus Material: Hard-drawn copper of 98 percent conductivity with feeder
circuit-breaker line connections.
2.
Load Terminals: Insulated, rigidly braced, silver-plated, copper runback bus extensions
equipped with pressure connectors for outgoing circuit conductors. Provide load terminals for
future circuit-breaker positions at full ampere rating of circuit-breaker position.
3.
Ground Bus: 1/4-by-2-inch minimum size, drawn-temper copper of 98 percent conductivity,
equipped with mechanical connectors for feeder and branch-circuit ground conductors. For
busway feeders, extend insulated equipment grounding cable to busway ground connection
and support cable at intervals in vertical run. Provide code sized ground bus throughout
switchboard.
4.
Contact Surfaces of Buses: Silver plated.
5.
Main Phase Buses, Neutral Buses, and Equipment Ground Buses: Uniform capacity for entire
length of switchboard's main and distribution sections. Tapered bus (vertical or horizontal) is
unacceptable. Provide for future extensions from both ends of the switchboard.
6.
Busway terminating at switchboard shall be bus connected. Cable connections are
unacceptable.
7.
Bus bars shall be arranged throughout A-B-C left to right, top to bottom, and front to rear.
Bus bars shall be permanently labeled by phase. Bus joints shall be bolted with high tensile
steel bolts with spring-loaded Belleville type washers. Bus joints shall be accessible after
installation.
SWITCHBOARDS
Allow access to circuit-breaker, metering, accessory, and blank
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Neutral Buses: 100 percent of the ampacity of the phase buses, unless otherwise indicated,
equipped with pressure connectors for outgoing circuit neutral cables. Bus extensions for
busway feeder neutral bus is braced.
L.
Future Devices: Equip compartments with mounting brackets, supports, bus connections, and
appurtenances at full rating of circuit-breaker compartment. Provide full capacity bus. Brace and
insulate spaces for available fault current.
M.
Bus-Bar Insulation: Factory-applied, flame-retardant, 105°C minimum tape wrapping of individual
bus bars or flame-retardant, spray-applied insulation of same temperature rating.
N.
Where the switchboard is used as Service Entrance Equipment, the equipment nameplate shall
clearly state that the equipment is UL listed for use as Service Entrance Equipment.
2.4
OVERCURRENT PROTECTIVE DEVICES
A.
Overcurrent Protection Device Types:
1.
Main Device: Enclosed, Insulated-Case Circuit Breaker.
2.
Branch Devices: Molded case circuit breakers.
a.
Provide with integral thermal and magnetic trip in each pole.
3.
Fuses: Bussmann, Gould Shawmut and Littlefuse. Amperage as required, rejection type
current limiting fuses; size as indicated on the drawings.
B.
Molded-Case Circuit Breaker: NEMA AB 1, with interrupting capacity to meet available fault
currents.
1.
Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads,
and instantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting
for circuit-breaker frame sizes 250 amps and larger.
2.
Adjustable Instantaneous-Trip Circuit Breakers: Magnetic trip element with front-mounted,
field-adjustable trip setting.
3.
Electronic Trip Unit Circuit Breakers: RMS sensing; field-replaceable rating plug; with the
following field-adjustable settings:
a.
Instantaneous trip
b.
Long- and short-time pickup levels
c.
Long- and short-time time adjustments
d.
Ground-fault pickup level, time delay, and I2t response
4.
Current-Limiting Circuit Breakers: Frame sizes 400 amps and smaller; let-through ratings less
than NEMA FU 1, RK-5.
5.
Integrally Fused Circuit Breakers: Thermal-magnetic trip element with integral limiter-style
fuse listed for use with circuit breaker; trip activation on fuse opening or on opening of fuse
compartment door.
6.
GFCI Circuit Breakers: Single- and two-pole configurations with 30-mA trip sensitivity.
C.
Molded-Case Circuit-Breaker Features and Accessories: Standard frame sizes, trip ratings, and
number of poles.
1.
Lugs: Mechanical style, suitable for number, size, trip ratings, and material of conductors.
2.
Application Listing: Appropriate for application; Type SWD for switching fluorescent
lighting loads; Type HACR for heating, air-conditioning, and refrigerating equipment.
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4.
5.
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Ground-Fault Protection: Integrally mounted relay and trip unit with adjustable pickup and
time-delay settings, push-to-test feature, and ground-fault indicator.
Undervoltage Trip: Set to operate at 35 to 75 percent of rated voltage with field-adjustable
0.1- to 0.6-second time delay.
Auxiliary Switch: Two SPDT switches with "a" and "b" contacts; "a" contacts mimic circuitbreaker contacts, "b" contacts operate in reverse of circuit-breaker contacts.
D.
Enclosed, Insulated-Case Circuit Breaker: Fully rated, encased-power circuit breaker with
interrupting capacity rating to meet available fault current.
1.
Drawout circuit-breaker mounting.
2.
Two-step, stored-energy closing.
3.
Microprocessor-based trip units with interchangeable rating plug, LED trip indicators, and the
following field-adjustable settings:
a.
Instantaneous trip
b.
Long- and short-time pickup levels
c.
Long- and short-time time adjustments with I2t response
d.
Ground-fault pickup level, time delay, and I2t response
4.
Remote trip indication and control.
5.
Communication Capability: Integral communication module with functions and features
compatible with power monitoring and control system.
6.
Key Interlock Kit: Externally mounted to prohibit circuit-breaker operation; key shall be
removable only when circuit breaker is in off position.
7.
Zone-Selective Interlocking: Integral with electronic trip unit; for interlocking ground-fault
protection function.
8.
Control Voltage: 125V ac.
E.
Fusible Switch Assemblies below 800 Amperes:
1.
Quick make, quick break, load interrupter enclosed knife switch with externally operable
handle. Provide override release screw to permit opening front cover with switch in the "on"
position. Handle lockable in the "off" position. Fuse clips to accommodate fuse class
required by fault current availability.
F.
Fusible Switch Assemblies 800 Amperes and Larger:
1.
Bolted pressure contact switches. Fuse clips to accommodate fuse class required by fault
current availability.
G.
Molded Case Circuit Breakers:
1.
Provide with integral thermal and magnetic trip in each pole.
H.
Solid-State Molded Case Circuit Breakers:
1.
Provide with electronic sensing, timing and tripping circuits for adjustable current settings;
ground fault trip, instantaneous trip and adjustable short time and long time trip. The
instantaneous shall be capable of being turned on and turned off on the main breaker only.
I.
Air Circuit Breakers:
1.
Provide factory assembled, low voltage air circuit breakers. Include electronic sensing, timing
and tripping circuits for adjustable current long time delay, long time pickup, ground fault
operation, short trip and instantaneous trip and turned off on the main breaker only.
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GROUND FAULT PROTECTION
A.
Ground fault protection shall be provided where indicated on the Drawings and on all service
disconnect switches rated 1000 amperes or more as required by the NEC.
B.
The ground fault protection shall consist of the following:
1.
Current Monitor: The current monitor shall consist of a zero-sequence current transformer
which shall enclose all current carrying conductors, including the neutral conductor if used, of
the circuit being protected.
2.
Ground Fault Sensor: The ground fault sensor shall continuously sense the output of the
current monitor. Should the sensor detect a ground current in excess of the pick-up setting for
a duration exceeding the time delay, the sensor shall shunt-trip the appropriate device. The
sensor shall have an adjustable pick-up of 200 to 1200 amperes and an adjustable time delay
from 0 to 15 seconds. Provide with monitor panel and lamp to indicate relay operation, "Test"
and "Reset" control switches.
3.
Test Panels: Each ground fault sensor shall be provided with a test panel which shall
completely test the ground fault system. The test panel shall indicate that a ground fault was
sensed or test the system with or without tripping the switch or circuit breaker. The test panel
shall be installed in the front of the switchboard adjacent to the device being protected.
4.
Shunt-Trip: Each device with ground fault protection shall be provided with a shunt-trip
which shall automatically open the device when signaled by the sensor.
5.
Provide fuse protected control power transformer from the switchboard line side for the
ground fault system. Ground fault and shunt-trip device shall be capable of operation at 55%
of rated voltage.
C.
Settings: Set each ground fault sensor pick up setting at 25% of the rating of over-current device
with a two-second time delay unless specifically indicated otherwise in the accepted short circuit
and coordination study.
2.6
INSTRUMENTATION
A.
Instrument Transformers: NEMA EI 21.1, IEEE C57.13, and the following:
1.
Potential Transformers: Secondary voltage rating of 120-volt and NEMA accuracy class of
0.3 with burdens of W, X, and Y.
2.
Current Transformers: Ratios shall be as indicated with accuracy class and burden suitable
for connected relays, meters, and instruments.
3.
Control-Power Transformers: Dry type, mounted in separate compartments for units larger
than 3 kV.
4.
Current Transformers for Neutral and Ground-Fault Current Sensing: Connect secondaries to
ground overcurrent relays to provide selective tripping of main and tie circuit breaker.
Coordinate with feeder circuit-breaker ground-fault protection.
5.
Provide instrument transformers as defined in Section 16430 "Metering."
B.
Metering: See Division 16, Section 16430 “Metering.”
2.7
A.
CONTROL POWER
Control Circuits: 120V, supplied through secondary disconnecting devices from control-power
transformer.
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B.
Electrically Interlocked Main and Tie Circuit Breakers: Two control-power transformers in separate
compartments, with interlocking relays, connected to the primary side of each control-power
transformer at the line side of the associated main circuit breaker. 120V secondaries connected
through automatic transfer relays to ensure a fail-safe automatic transfer scheme.
C.
Control-Power Fuses: Primary and secondary fuses for current-limiting and overload protection of
transformer and fuses for protection of control circuits.
D.
Control Wiring: Factory installed, with bundling, lacing, and protection included. Provide flexible
conductors for No. 8 AWG and smaller, for conductors across hinges, and for conductors for
interconnections between shipping units.
2.8
ACCESSORY COMPONENTS AND FEATURES
A.
Accessory Set: Tools and miscellaneous items required for overcurrent protective device test,
inspection, maintenance, and operation.
B.
Portable Test Set: To test functions of solid-state trip devices without removal from switchboard.
Include relay and meter test plugs suitable for testing switchboard meters and switchboard class
relays.
C.
Circuit-Breaker Removal Apparatus: Furnish one portable, floor-supported, roller-based, elevating
carriage arranged for movement of circuit breakers in and out of compartments for present and
future circuit breakers.
D.
Fungus Proofing: Permanent fungicidal treatment for switchboard interior, including instruments
and instrument transformers.
E.
Provide a spare fuse cabinet in the main electrical room if one does not exist. Equip with a complete
space set of fuses for each type and size used in the switchboard. Label per 16195.
2.9
A.
IDENTIFICATION
Mimic Bus: Continuously integrated mimic bus factory applied to front of switchboard. Arrange in
single-line diagram format, using symbols and letter designations consistent with final mimic-bus
diagram. Coordinate mimic-bus segments with devices in switchboard sections to which applied.
Produce a concise visual presentation of principal switchboard components and connections.
PART 3 – EXECUTION
3.1
PROTECTION
A.
Temporary Heating: Apply temporary heat to maintain temperature according to manufacturer's
written instructions.
B.
Shipping: Equipment shall be shipped with re-usable gravity meters to indicate being dropped or
tipped over.
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3.2
A.
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EXAMINATION
Examine elements and surfaces to receive switchboards for compliance with installation tolerances
and other conditions affecting performance. Proceed with installation only after unsatisfactory
conditions have been corrected.
INSTALLATION
A.
Install switchboards and accessories according to NEMA PB 2.1.
B.
Support switchboards on concrete bases, 4-inch nominal thickness.
C.
Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and
temporary blocking of moving parts from switchboard units and components.
D.
Operating Instructions: Frame and mount the printed basic operating instructions for switchboards,
including control and key interlocking sequences and emergency procedures. Fabricate frame of
finished wood or metal and cover instructions with clear acrylic plastic. Mount on front of
switchboards. Include a framed copy of Record Drawing showing final arrangement modifications
and capacities of switchboard and system one-line for each reference, mounted on the main
electrical room wall.
E.
Confirm that adequate working clearance is provided around and above switchboard.
F.
No mechanical piping or ductwork not related to the switchboard operation / equipment room is
allowed in the electrical room.
G.
The contractor shall coordinate equipment move in with door openings, access corridors and
elevator capacities. Indicate shipping splits as necessary. Make provisions for future removal of
switchboard for the completed structure.
H.
Provide a spare fuse cabinet where fuses are used. Locate the cabinet in the main electrical room.
The cabinet shall be equipped with a complete spare set of fuses for each type and size used on the
electrical system. Cabinet shall be labeled “Spare Fuses”.
I.
Battery powered emergency fixtures are required in the Electrical Room(s). Confirm location with
the UCB electric shop personnel.
J.
All shipped equipment will require re-usable gravity meters to indicate that components have been
dropped or tipped over.
K.
The contractor shall provide a coordination study prepared by the equipment manufacturer. The
study will be provided to the EOR for breaker setting selection. Contractor shall make all trip
setting adjustments based on the information from the EOR.
L.
Load balance switchboards to within 10% phase to phase.
M.
Provide 25% spare equipped spaces.
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N.
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Provide load side lugs on all spare breakers sized to the full amperage rated up to maximum size of 4
– 4/0 awg.
IDENTIFICATION
A.
Identify field-installed conductors, interconnecting wiring, and components; provide warning signs
as specified in Division 16, Section "Common Work Results for Electrical.”
B.
Switchboard Nameplates: Label each switchboard compartment with engraved metal or laminatedplastic nameplate mounted with corrosion-resistant screws.
3.5
CONNECTIONS
A.
Install equipment grounding connections for switchboards with ground continuity to main electrical
ground bus.
B.
Tighten electrical connectors and terminals according to manufacturer's published torque-tightening
values. If manufacturer's torque values are not indicated, use those specified in UL 486A and
UL 486B.
3.6
FIELD QUALITY CONTROL
A.
Prepare for acceptance tests as follows:
1.
Test insulation resistance for each switchboard bus, component, connecting supply, feeder,
and control circuit.
2.
Test continuity of each circuit.
B.
Testing Agency: Engage a qualified independent testing agency to perform specified testing.
C.
Testing: After installing switchboards and after electrical circuitry has been energized, demonstrate
product capability and compliance with requirements.
1.
Procedures: Perform each visual and mechanical inspection and electrical test indicated in
NETA ATS, Sections 7.1, 7.5, 7.6, 7.9, 7.10, 7.11, and 7.14 as appropriate. Certify
compliance with test parameters.
2.
Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance;
otherwise, replace with new units and retest.
3.
Measure resistance of switchboard insulation after assembly is complete. Test voltage shall
be 1000 v. Acceptance minimum resistance is 100 megohms all sections, phase to phase and
phase to ground with other phases grounded.
3.7
ADJUSTING
A.
Set field-adjustable switches and circuit breaker trip ranges.
B.
The EOR shall provide a preliminary coordination study. The contractor and manufacturer of
equipment installed shall provide a coordination study of the equipment used prior to installation.
EOR shall provide breaker settings to the contractor.
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C.
All main devices shall have the adjustments per 2.02.B.4.a. These adjustable setting shall also be
provided on all devices feeding MCC's or large motor loads.
D.
Adjust trip and time delay settings on adjustable devices. Indicate setting values on Drawings.
3.8
A.
CLEANING
On completion of installation, inspect interior and exterior of switchboards. Remove paint splatters
and other spots. Vacuum dirt and debris; do not use compressed air to assist in cleaning. Repair
exposed surfaces to match original finish.
END OF SECTION 16 44 10
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SECTION 16 45 00 – SECONDARY GROUNDING
PART 1 – GENERAL
1.1
A.
1.2
RELATED DOCUMENTS
Drawings and general provisions of the Contract, including General and Supplementary Conditions
and Division 1 Specifications, apply to this Section.
SUMMARY
A.
This Section includes grounding of electrical systems and equipment and basic requirements for
grounding for protection of life, equipment, circuits, and systems. Grounding requirements
specified in this Section may be supplemented in other Sections of these Specifications.
B.
Section Includes:
1.
Power System Grounding.
2.
Communication Systems Grounding.
3.
Electrical Equipment and Raceway Grounding and Bonding.
4.
Computer Systems Grounding.
C.
Related Sections:
1.
Section 16110 – Raceways.
2.
Section 16420 - Service Entrance.
3.
Section 16425 - Medium Voltage Switchboards.
4.
Section 16441 – Switchboards.
5.
Section 16460 - Medium Voltage Transformers.
6.
Section 16470 - Panelboards
1.3
REFERENCES
A.
Specify Underwriters Laboratories (UL) listed equipment, assemblies and materials.
B.
National Electrical Code (NEC) (Current Edition).
1.4
SYSTEM DESCRIPTION
A.
Ground the electrical service system neutral at service entrance equipment to grounding electrode
system: metallic water service, effective building steel, and to supplementary grounding electrodes
in compliance with NEC.
B.
Ground each separately-derived system neutral (transformer secondary) to nearest effectively
grounded metallic cold water pipe or building structural steel (preferred source) or ground bus.
Provide detailed information on type, size, location, etc.
C.
Provide communications system grounding conductor at point of service entrance and connect to
service grounding electrode system.
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D.
Bond together service equipment enclosures, exposed non-current carrying metal parts of electrical
equipment, metal raceway systems, grounding conductor in raceways and cable, receptacle
equipment ground conductors and plumbing systems in accordance with NEC requirements.
E.
Provide full sized equipment ground conductor in all feeders regardless of type of raceway.
F.
Provide equipment grounding conductor in all branch circuit conduits.
1.5
SUBMITTALS
A.
General: Submit each item in this Article according to the Conditions of the Contract and
Division 1 Specifications, Section 01300 - Submittals.
B.
Product Data for grounding rods, connectors and connection materials, grounding fittings and field
testing reports.
C.
Qualification data for firms and persons specified in "Quality Assurance" Article to demonstrate
their capabilities and experience. Include lists of completed projects with project names and
addresses, names and addresses of Architect/Engineers and Owners, and other information
specified.
D.
Field tests and observation reports certified by the testing organization and indicating and
interpreting the test reports for compliance with performance requirements.
1.6
QUALITY ASSURANCE
A.
Testing Agency Qualifications: A "Nationally Recognized Testing Laboratory" (NRTL) as defined
in OSHA Regulation 1910.7, or a full member company of the InterNational Electrical Testing
Association (NETA).
1.
Testing Agency Field Supervision: Use persons currently certified by NETA or the National
Institute for Certification in Engineering Technologies to supervise on-site testing specified in
Part 3.
B.
Comply with latest edition of the National Electrical Code (NFPA 70).
C.
Comply with UL 467.
D.
Listing and Labeling: Provide products specified in this Section that are listed and labeled.
1.
The Terms "Listed" and "Labeled": As defined in the National Electrical Code, Article 100.
PART 2 – PRODUCTS
2.1
A.
MANUFACTURERS
Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1.
Apache Grounding; Nashville Wire Products
2.
Boggs: H. L. Boggs & Co.
3.
Chance: A. B. Chance Co.
SECONDARY GROUNDING
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4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
2.2
A.
2.3
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Dossert Corp.
Erico Inc.; Electrical Products Group.
Galvan Industries, Inc.
Ideal Industries, Inc.
ILSCO.
Kearney.
Korns: C. C. Korns Co.
Lyncole XIT Grounding
O-Z/Gedney Co.
Raco, Inc.
Salisbury: W.H. Salisbury & Co., Utility.
Thomas & Betts, Electrical.
Utilco Co.
GROUNDING AND BONDING PRODUCTS
Governing Requirements: Where types, sizes, ratings, and quantities indicated are in excess of
National Electrical Code (NEC) requirements, the more stringent requirements and the greater size,
rating, and quantity indications govern.
WIRE AND CABLE GROUNDING CONDUCTORS
A.
Comply with Division 16, Section "Wire and Cable." Conform to NEC Table 8, except as otherwise
indicated, for conductor properties, including stranding.
1.
Material: Use only copper wire for both insulated and bare grounding conductors in direct
contact with earth, concrete, masonry, crushed stone and similar materials.
B.
Equipment Grounding Conductors: Insulated with green color insulation or bare copper.
C.
Grounding-Electrode Conductors: Stranded cable.
D.
Bare Copper Conductors: Conform to the following:
1.
Solid Conductors: ASTM B 3.
2.
Assembly of Stranded Conductors: ASTM B 8.
3.
Tinned Conductors: ASTM B 33.
E.
Ground Rods:
1.
Copper encased steel, 3/4" diameter, minimum length 10'.
2.4
MISCELLANEOUS CONDUCTORS
A.
Grounding Bus: Bare, annealed-copper bars of rectangular cross section, ampacity as required by
NEC.
B.
Braided Bonding Jumpers: Copper tape, braided No. 30 AWG bare copper wire, terminated with
copper ferrules.
C.
Bonding Straps: Soft copper, 0.05 inch (1 mm) thick and 2 inches (50 mm) wide, except as
indicated.
SECONDARY GROUNDING
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CONNECTOR PRODUCTS
A.
Pressure Connectors: High-conductivity-plated units.
B.
Bolted Clamps: Heavy-duty type.
C.
Exothermic-Welded Connections: Provided in kit form and selected per manufacturer's written
instructions for specific types, sizes, and combinations of conductors and connected items.
PART 3 – EXECUTION
3.1
APPLICATION
A.
Equipment Grounding Conductors: Comply with NEC Article 250 for types, sizes, and quantities of
equipment grounding conductors, except where specific types, larger sizes, or more conductors than
required by NEC are indicated.
1.
Provide a separate full sized equipment grounding conductor in all conduits regardless of
raceway type. Terminate each end on a grounding lug, bus or bushing.
2.
Isolated Grounding-Receptacle Circuits: Install a separate insulated equipment grounding
conductor connected to the receptacle grounding terminal. Isolate grounding conductor from
raceway and from panelboard grounding terminals. Terminate at the equipment groundingconductor terminal of the applicable derived system or service, except as otherwise indicated.
B.
Separately Derived Systems: Where NEC requires grounding, ground according to NEC Paragraph
250-26.
3.2
INSTALLATION
A.
General: Ground electrical systems and equipment according to NEC requirements, except where
Drawings or Specifications exceed NEC requirements.
B.
Grounding Rods: Locate a minimum of 1-rod length from each other and at least the same distance
from any other grounding electrode.
1.
Drive until tops are 2 inches (50 mm) below finished floor or final grade, except as otherwise
indicated.
2.
Interconnect with grounding-electrode conductors. Use exothermic welds, except at test wells
and as otherwise indicated. Make these connections without damaging copper coating or
exposing steel.
C.
Grounding Conductors: Route along the shortest and straightest paths possible, except as otherwise
indicated. Avoid obstructing access or placing conductors where they may be subjected to strain,
impact, or damage.
D.
Grounding Requirement:
1.
Provide a separate insulated equipment grounding conductor in all feeder circuits. Terminate
each end on a grounding lug, bus or bushing.
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E.
Require connection of grounding electrode conductors to metal water pipe. Connections are to be
made to flange piping at the street site of the flange. Require bonding jumper around water meter.
F.
Provide minimum #6 AWG copper conductor in conduit for communications service grounding
conductor terminated at building grounding electrical system.
G.
For isolated grounding systems, specify an insulated full size grounding conductor terminated at the
nearest grounding electrode in compliance with NEC.
H.
Require field testing of ground resistance from service neutral connection to ground reference point.
Maximum permitted resistance 0.5 ohms. Perform fall of potential test with results not greater than
5 ohms.
I.
Require tests to me performed in the presence of a representative of the Department of Facilities
Management. Test shall be documented and report turned over to the University.
3.3
CONNECTIONS
A.
General: Make connections so possibility of galvanic action or electrolysis is minimized. Select
connectors, connection hardware, conductors, and connection methods so metals in direct contact
will be galvanically compatible.
1.
Use electroplated or hot-tin-coated materials to assure high conductivity and to make contact
points closer in order of galvanic series.
2.
Make connections with clean, bare metal at points of contact.
B.
Exothermic-Welded Connections: Use for connections to structural steel and for underground
connections, except those at test wells. Comply with manufacturer's written instructions. Welds
that are puffed up or that show convex surfaces indicating improper cleaning are not acceptable.
C.
Equipment Grounding-Wire Terminations: For No. 8 AWG and larger, use pressure-type grounding
lugs. No. 10 AWG and smaller grounding conductors may be terminated with winged pressure-type
connectors.
D.
Connections at Test Wells: Use compression-type connectors on conductors and make bolted- and
clamped-type connections between conductors and grounding rods.
E.
Tighten screws and bolts for grounding and bonding connectors and terminals according to
manufacturer's published torque-tightening values. Where these requirements are not available, use
those specified in UL 486A and UL 486B.
F.
Compression-Type Connections:
Use hydraulic compression tools to provide correct
circumferential pressure for compression connectors. Use tools and dies recommended by
manufacturer of connectors. Provide embossing die code or other standard method to make a visible
indication that a connector has been adequately compressed on grounding conductor.
G.
Moisture Protection: Where insulated grounding conductors are connected to grounding rods or
grounding buses, insulate entire area of connection and seal against moisture penetration of
insulation and cable.
SECONDARY GROUNDING
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FIELD QUALITY CONTROL
A.
Independent Testing Agency: Provide services of an independent electrical testing agency
according to the requirements of Division 1, Section "Quality Requirements" to perform tests on
installations made under this Section.
B.
Testing Witness: Ground resistance testing shall be performed by an independent testing agency in
the presence of a representative of the Department of Facilities Management. Provide a minimum
two weeks’ notice prior to testing.
C.
Tests: Subject the completed grounding system to a megger test at each location where a maximum
ground-resistance level is specified, at service disconnect enclosure grounding terminal, and at
ground test wells. Measure ground resistance not less than 2 full days after the last trace of
precipitation, and without the soil being moistened by any means other than natural drainage or
seepage and without chemical treatment or other artificial means of reducing natural ground
resistance. Perform tests by the 2-point method according to IEEE 81.
D.
Maximum grounding resistance values are as follows:
1.
Equipment Rated 500 kVA and Less: 10 ohms.
2.
Equipment Rated 500 to 1000 kVA: 5 ohms.
3.
Equipment Rated More than 1000 kVA: 3 ohms.
E.
Excessive Ground Resistance: Where resistance to ground exceeds specified values, notify Owner
promptly and include recommendations to reduce ground resistance and to accomplish
recommended work.
F.
Report: Prepare test reports of ground resistance at each test location. Include observations of
weather and other phenomena that may affect test results. Describe measures taken to improve test
results.
END OF SECTION 16 45 00
SECONDARY GROUNDING
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SECTION 16 99 40 – TESTING & COMMISSIONING
PART 1 – GENERAL
1.1
RELATED WORK SPECIFIED ELSEWHERE
Division 16, Section “Common Work Results for Electrical”
Division 16, Section “Medium-Voltage Transformers”
Division 16, Section “Medium-Voltage Cable”
Division 16, Section “Primary Grounding”
Division 16, Section “Switchboards”
Division 16, Section “Secondary Grounding”
Division 16, Section “Metering”
Division 16, Section “Transient Voltage Suppression for Low-Voltage Electrical Power Circuits”
1.2
SUBMITTALS
A.
Submit detailed test forms for each test item (equipment/cable/etc.) to UCB for approval at least
four weeks prior to beginning the proposed tests.
B.
Submit detailed commissioning sequence and verification forms to UCB for approval at least four
weeks prior to beginning the proposed work.
C.
Submit results of testing for each cable/equipment/system/etc. to UCB prior to Substantial
Completion. Where available, test results shall be submitted electronically to UCB Facilities
Management and Utilities personnel.
D.
Submit completed commissioning forms to the University prior to final payment application.
1.3
SCOPE
A.
Independent Testing Agency: Except where indicated herein and required in individual
specification sections, Contractor shall provide services of an independent electrical testing agency
to perform tests on installations made under this Division. Provide testing as indicated below, and
as described in the testing portion of Part 3 of each section referenced above.
B.
Testing Witness: All testing shall be performed by an independent testing agency or the Contractor
in the presence of a representative of the Department of Facilities Management. Provide at least two
weeks notice prior to testing.
C.
Perform visual and mechanical inspections, verifying that the equipment nameplate information
meets the intent of the drawings and specifications.
D.
Verify correct phase rotation, equipment operation, anchoring/assembly, and system functionality.
E.
The Contractor shall be responsible for all final settings and adjustments on protective devices, as
provided by the Engineer. Submittal record of these settings shall be furnished with the final AsBuilt submittal.
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CM - M12011 - L1BR - R/R Building Electrical Services PH 1 of 3
F.
March 24, 2014
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Commissioning sequence of work will ensure that each component/cable/equipment/etc. has been
fully tested prior to energizing, and that all branch circuits, feeders, service equipment, metering,
etc. and the completed system has been verified to be operating correctly to the satisfaction of UCB.
PART 2 – PRODUCTS
2.1
EQUIPMENT
A.
Insulation resistance measurements shall be made with a megger.
B.
Ground resistance test equipment in accordance with IEEE Standard 81-1991.
C.
High potential (DC) test equipment: Hipotronics Model 800 PL Series, or approved equal.
D.
Phase rotation meter.
E.
Cable pulling tension meter.
F.
All test equipment shall include calibration documentation that is current.
2.2
COMMISSIONING FORMS
A.
Commissioning forms to include Contractor checklist in the approved sequence, dates/timeframe,
hold points, and verification date/sign-off areas for the University.
B.
Include successful test confirmation for all components, cable, equipment, etc., related to the
commissioning sequence.
C.
Identify systems affected by the work, including building(s), primary feeders/switches, secondary
services, metering, and switchboards.
D.
Provide detailed safety procedures for each commissioning sequence.
PART 3 – EXECUTION
3.1
GENERAL
A.
Test each system to verify compliance with the Specifications and with the manufacturer's published
standards. If system does not meet the prescribed standards, adjust, repair and/or replace system,
and retest to confirm compliance with the prescribed standards. Tests of the following systems shall
be performed by an independent electrical testing agency: medium-voltage transformers. Mediumvoltage cable and all other tests not identified above shall be performed and documented by the
Contractor.
B.
Commissioning services to include successful test confirmation, equipment energization and startup,
and verification of proper system operation. Commissioning to be witnessed by the University and
shall incorporate procedures to ensure the safety of students and personnel. Contractor shall
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CM - M12011 - L1BR - R/R Building Electrical Services PH 1 of 3
March 24, 2014
CP161444 / WA-60716
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maintain up-to-date commissioning forms on site at all times during the testing/commissioning
periods.
C.
3.2
A.
3.3
All installations shall be properly verified against the manufacturer’s installation requirements
including checkout procedures prior to energization. No equipment shall be energized prior to all
tests being completed.
600-VOLT INSULATED CONDUCTORS
For all 480V circuits and 208V supply feeders, and 120V and 208V branch circuits, perform the
following tests before connecting the installed conductors to any equipment:
1.
Verify continuity of all conductors. Verify cable color-coding.
2.
Measure the insulation resistance to ground of each conductor using a megger. Minimum
value for each conductor shall be 100 megohms at 60°F.
3.
Investigate deviations between recorded values of adjacent phases.
4.
Refer to Division 16, Section “Wire and Cable” for additional testing requirements.
PRIMARY AND SECONDARY GROUNDING
A.
Test the continuity of the primary and secondary grounding systems in each building before
energizing the service to the building.
B.
Test the continuity of equipment grounds before energizing equipment. Resistance between
equipment enclosures, panelboard ground bus, and other grounding facilities shall not exceed
0.5 ohm to the system ground. Investigate point-to-point resistance values, which exceed 0.5 ohm.
C.
Test the trip level of ground fault interrupting devices. Leakage current trip levels shall not exceed
5 milli amperes on ground-fault circuit-interrupting type receptacles and branch circuit breakers.
D.
Perform fall-of-potential test on primary and secondary ground systems in accordance with IEEE
Standard 81-1991. Use two-point method to determine the resistance between main system and
neutral for primary cables. Maximum permitted resistance between service neutral connection and
ground reference point is 0.5 ohms. Fall of potential test results should be no greater than 5 ohms
(both primary and secondary ground systems).
E.
Refer to Division 16, Section “Secondary Grounding” for additional testing requirements.
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