Electric Cabinet Specifications
The following specifications describe the major components that shall be provided in the cabinet. The
fabricator shall provide all the required miscellaneous wires, connectors, small components, etc.. In
order to provide a functional electrical cabinet. All materials and construction shall meet the standards
as stated in the appropriate specification section indicated below.
Specifications:
Section 16000
General Requirements
1.01 Quality Assurance
A.
Referenced standards:
This Section incorporates by reference the latest revisions of the following documents. They are a part
of this Section as specified and modified. Where a referenced document contains references to other
standards, those documents are included as references under this Section as if referenced directly. In
the event of conflict between the requirements of this Section and those of the listed documents, the
requirements of this Section shall prevail.
Reference
Title
AASHTO
American Association of State Highway Transportation Officials
ANSI A58.1
Minimum Design Loads for Buildings and Other Structures
ASTM International (ASTM)
FS
Federal Specifications
ICEA
Insulated Cable Engineers Association
IEEE
Institute of Electrical and Electronics Engineers. Inc.
NECA
National Electrical Contractor's Association, Inc.
NETA
International Electric Testing Association
NFPA-70
National Electrical Code (NEC)
IBC
International Building Code
UBC
Uniform Building Code
UL
Underwriters Laboratories, Inc.
NEMA 250
Enclosures for Electrical Equipment
B.
Code references:
1.
Code references in all Division 16 Sections shall include local amendments. Perform all work
and install materials and equipment in full accordance with the latest applicable rules, regulations,
requirements, and specifications of the following:
a.
Local, State and Federal Laws
b.
Oregon Electrical Specialty Code (OAR Chapter 9.18)
c.
Electrical Safety Law (ORS Chapter 479)
d.
National Electrical Code (NEC)
e.
Life Safety Code (NFPA-101)
f.
National Electrical Safety Code (NESC)
g.
American National Standards Institute (ANSI)
h.
National Electrical Manufacturers Association (NEMA)
i.
Institute of Electrical and Electronic Engineers (IEEE)
j.
Insulated Cable Engineers Association (ICEA)
k.
The Occupational Safety and Health Act (OSHA)
l.
American Society for Testing and Materials (ASTM)
m.
Underwriters' Laboratory (UL)
n.
Local laws, codes, and ordinances
2.
In the case of conflicts that may exist between the above items, the more restrictive shall
govern.
3.
Wherever the requirements of the Specifications or Drawings exceed those of the items above,
the requirements of the Specifications or Drawings shall govern. Code compliance is mandatory. Nothing
in these Drawings and Specifications permits work not conforming to these codes.
4.
Obtain all permits and pay all fees required by any governmental agency having jurisdiction over
the work. Arrange all inspections required by these agencies. On completion of the work, furnish
satisfactory evidence to the Engineer that the work is acceptable to the regulatory authorities having
jurisdiction.
C.
Shipment, protection, and storage:
1.
All equipment shall be shipped to the specified address and shall be protected from damage
during shipment. At time of delivery, an approved ODFW representative shall sign off on receipt of the
equipment and that is it free from damage.
D.
Use of listed products:
1.
Electrical equipment and materials shall be listed by an independent testing laboratory for the
purpose for which they are to be used. Four such organizations are Underwriters Laboratories (UL),
Canadian Standards Association (CSA), Factory Mutual (FM), and Electrical Testing Laboratories (ETL).
The independent testing laboratory shall be acceptable to the inspecting authority having jurisdiction.
2.
When a product is not available with a testing laboratory listing for the purpose for which it is to
serve, the product shall be required to undergo a special inspection and field labeling by an acceptable
testing laboratory. All costs and expenses incurred for such inspections shall be included in the original
contract price.
3.
Products shall meet all requirements and be "Certified Electrical Products" per Oregon Electrical
Safety Law (ORS 479).
E.
Factory support:
1.
Factory Tests: The assembler or manufacturer of electrical apparatus components, materials
and equipment assemblies shall conduct Factory testing. Factory tests shall be performed at the place of
fabrication and performed on completion of manufacture or assembly. All system components shall be
factory-wired and tested as a system prior to shipment. The costs of factory tests shall be included in the
contract price. Testing shall be designed to verify design conformance and system operation and shall
include as a minimum:
a.
Verification of drawings and bill of materials
b.
Certification of conformance with ANSI/NEMA ICS 1 and ANSI/NEMA ICS.
1.02 SUBMITTALS
A.
Preconstruction submittals:
1.
The following submittal information and product data specified under individual specification
sections shall be provided.
2.
Manufacturer's equipment and device information.
a.
Ratings, range, accuracy, etc.
b.
Catalog cuts shall be edited to show only the items model numbers, and information that apply
to the submittal requirements.
c.
Manufacturer's certification and calculations that the equipment complies with the seismic
requirements of this Section.
d.
Additional specific materials requested by the individual specification sections
e.
Indication of whether the product is listed or will be labeled to meet Certified Electrical Product
requirements
3.
Manufacturer's Warranty or when required in the individual specifications, Certified Certificate
of Unit Responsibility.
4.
Drawings for Vendor or Contractor designed systems:
a.
Equipment arrangement drawings depicting panel and cabinet locations, dimensions, required
clearances, height, width and depth, mounting requirements, support structures.
b.
Panel drawings shall be comprehensive shop assembly and interconnection drawings.
c.
Drawing format for circuiting may be as revised one-line diagrams and elementary or schematic
diagrams as appropriate.
B.
Construction and post construction submittals
1.
The following submittal information and product data specified under individual specification
sections shall be provided.
a.
Applicable operation and maintenance information on an item-by¬ item basis. Operation and
maintenance information shall be provided at the time of equipment, device, or material site delivery,
or at a certain stage of project completion, whichever is the earlier. Full-size drawings shall be reduced
to 11 x 17 inches.
b.
Test results for electrical systems shall be maintained by the Contractor. Prior to acceptance of
work, the resulting file shall be provided to the Engineer.
C.
Action submittals:
In addition to requirements contained in individual Specification Sections:
1.
Panel boards.
2.
Control devices, terminal blocks, and relays.
3.
Equipment Identification Nameplates and schedule.
4.
Conductors, cable, and accessories.
5.
Grounding materials.
1.03 DRAWING DEFINITIONS
A.
Elementary or schematic diagram:
A schematic (elementary) diagram shows. By means of graphic symbols, the electrical connections and
functions of a specific circuit arrangement. The schematic diagram facilitates tracing the circuit and its
functions without regard to the actual physical size, shape, or location of the component devices or
parts.
B.
One-line diagram:
Shows by means of single lines and graphical symbols the course of an electrical circuit or system of
circuits and the components, devices, or parts used therein. Physical relationships are usually
disregarded.
C.
Block diagram:
A diagram of a system, instrument, computer, or program in which selected portions are represented by
annotated boxes and interconnecting lines.
D.
Wiring diagram or connection system:
A wiring or connection diagram includes all of the devices in a system and shows their physical
relationship to each other including terminals and interconnecting wiring in an assembly. This diagram
shall be (a) in a form showing interconnecting wiring only by terminal designation (wireless diagram), or
(b) a panel layout diagram showing the physical location of devices plus the elementary diagram.
E.
Interconnection diagram:
1.
Interconnection diagrams shall show all external connections between terminals of equipment
and outside points, such as motors and auxiliary devices. References shall be shown to all connection
diagrams which interface to the interconnection diagrams. Interconnection diagrams shall be of the
continuous line type. Bundled wires shall be shown as a single line with the direction of entry/exit of the
individual wires clearly shown.
2.
Each wire identification as actually installed shall be shown and the wire identification for each
end of the same wire shall be identical. All devices and equipment shall be identified and terminal blocks
shall be shown as actually installed and identified in the equipment complete with individual terminal
identification.
3.
Show all jumpers, shielding and grounding termination details including signal and DC circuit
polarities and wire pairs.
4.
F.
Wireless diagrams and wire lists are not acceptable.
Arrangement, layout, or outline drawings:
An arrangement, layout, or outline drawing is one which shows the physical space and mounting
requirements of a piece of equipment. It may also indicate ventilation requirements and space provided
for connections or the location to which connections are to be made.
G.
Drawings
A complete set of Contractor As-Built drawings is to be supplied on 11 X 17 inch paper media and on
electronic media. Drawings will be complete with borders and title blocks clearly identifying project
name, equipment and the scope of the drawing. Drawing quality and size of presentation shall be such
as to permit reduction and reproduction of such drawings for insertion into operation and maintenance
manuals.
PART 2 – PRODUCTS AND SERVICES
2.01
EQUIPMENT AND MATERIALS
A.
General:
1.
Products shall comply with all applicable provisions of NFPA 70.
2.
Equipment and materials shall be new and free from defects.
3.
All material and equipment of the same or a similar type shall be of the same manufacturer
throughout the work.
4.
Standard production materials shall be used wherever possible.
B.
Equipment finish and color:
Unless otherwise indicated, electrical equipment and materials shall be painted by the manufacturer
according to their standard paint finish materials and color.
C.
Enclosure ratings:
Unless specified otherwise in other sections, electrical and instrumentation enclosures shall be provided
in accordance with the following table. See this section for the location of classified areas:
Area Type
NEMA 250 rating and material
Indoor dry
NEMA 12 Mild Steel
Indoor wet
NEMA 1, Painted
Process corrosive
Outdoor
NEMA 4X, 5052-H32 Aluminum
NEMA 3R, Painted
Chemical corrosive
NEMA 4X, FRP
Underground vault, manholes and hand holes
Classified
NEMA 6P
NEMA 7
F.
Raceway materials: See Specification Section 16110, 2.01, Table A.
2.02
ELECTRICAL NUMBERING SYSTEMS
A.
Raceway identification:
Raceway Prefix Type of Function
C
Control or power - 120V or less
D
Data and Communication
H
Power above 600V
L
Lighting - all voltages
N
Pneumatic tubing
P
Power 208V to 600V
S
Signal - data communication or instrumentation
X
Spare
1.
Raceway prefixes shall be followed by a unique number. Add a letter suffix to distinguish the
raceways where more than one raceway is routed to a particular piece of equipment.
Example:
Raceway number
= P3109A
where:
P = conduit contains power
3109 = unique 4-digit (or TAG) number
A = letter to distinguish raceways to same equipment
2.
Raceways shall be tagged at all terminations.
B.
Cable and conductor identification:
1.
Cables and conductors shall be identified with numbers at both ends. Cable numbers may
generally follow conduit designations. Conductor tag numbers shall consist of the Process Area number
and equipment TAG number followed by a dash followed by the conductor number specified on the
control or one-line diagram. Add a letter suffix to distinguish the cable where more than one cable is
routed to a particular piece of equipment.
Example:
Conductor number =60M3109A-L1
where:
60 = City Pump Station
M = Circuit identifier i.e. Motor Circuit
3109 = unique number (or TAG) number
A = letter to distinguish parallel cables to same equipment
-L I = conductor number
Cable circuit identifiers may be any abbreviation shown on the table of General Electrical Abbreviations
on Sheet E1.
2.
Conductors in parallel or in series between equipment shall have the same conductor number.
Neutral conductors shall have the same conductor number. Wherever possible, the conductor number
shall be the same as the equipment terminal to which it connects.
3.
Where factory-wired equipment has terminal numbers different than the conductor numbers
shown on the control diagrams:
a.
Both shall be shown on the interconnection diagram
b.
Include a copy of the interconnection diagram inside of the equipment cabinet.
2.03
CONDUCTOR AND CABLE MARKERS
A.
Each power and control conductor shall be identified at each terminal to which it is connected.
Conductors size No. 10 AWG or smaller shall have identification sleeves. Conductors No.8 AWG and
larger shall use cable markers of the locking tab type. Tabs shall be white plastic with conductor
identification number permanently embossed. Adhesive strips are not acceptable.
B.
The letters and numbers that identify each wire shall be machine printed on sleeves with
permanent black ink with figures 1/8 inch high. Sleeves shall be yellow or white tubing and sized to fit
the conductor insulation. Shrink the sleeves with hot air after installation to fit the conductor.
C.
Conductor and Wire Marker Manufacture:
1.
TMS Thermofit Marker System by Raychem Co or IMPACT
2.
Sleeve style wire marking system by W. H. Brady Co.
3.
Or approved equal.
2.04
INDICATING LAMP COLORS
A.
Unless otherwise specified, indicator lights shall be fitted with colored lenses in accordance with
the following schedule:
Color
Function
Example
Amber Abnormal or FAULT Condition Failure of equipment or status abnormal, fault condition
Red
Ready Ready
Green Normal Active Condition
pressure of air, water or lubrication
Pump Running, Control power on, status OK or clear, Normal
White Not Used
2.05
ELECTRICAL EQUIPMENT LABELING
A.
General
1.
All electrical equipment shall have labeling per the requirements specified herein.
2.
General requirements for Equipment Identification Labeling are specified in this section.
Individual Equipment Identification Label requirements may be modified in the individual specifications
section for the associated equipment.
3.
Electrical Numbering System requirements for labeling raceway and conductors are specified in
Section 16110 and 16000-2.02(A).
4.
Equipment Identification Labels for all equipment on this project shall conform to the
equipment name standards for equipment as indicated in the project equipment list and on the
Drawings in the format shown in paragraph 2.07(D) of this Section.
a.
Equipment tags shall include the equipment name and numbers exactly as listed in the
equipment list and on the Drawings. Contractor shall submit proposed label nomenclature prior to
installation on equipment.
b.
Equipment Identification Labels shall accommodate four lines of up to nineteen characters each.
c.
All unscheduled equipment shall also be labeled. Contractor shall obtain labeling information
direction from the Engineer and shall submit proposed labels prior to installation on equipment. This
information shall be transferred to as built documents and drawings by the contractor.
B.
General signs and labeling
Electrical equipment shall have signs and labeling to warn qualified persons of the potential electric arc
flash hazards per NEC Article 110.16, Flash Protection.
C.
Multiple feeder warning:
Provide plaques per NEC 690.17 and 70 1.9(A) which identify all multiple source feeders at building
disconnect locations identified as SE on the Drawings.
D.
Equipment identification labels:
1.
Equipment Identification Labels shall be affixed to electrical service, distribution and utilization
equipment to identify the power source and the load as specified. Nameplates shall be provided on each
item of electrical equipment, including individual switches and grouped distribution circuit breakers and
shall contain the specified equipment name or approved abbreviation and equipment number. Power
Panel boards shall have individual breakers identified on an internal panel schedule
2.
Refer to NEC Article 110.22 for Identification of Disconnecting Means installation criteria.
Specific information is required such as the equipment tag number and equipment description of both
the power source and the load equipment. Equipment with multiple sources will also require Multiple
Feeder Identification and Warning Signs as specified in 16000, 2.07(C).
3.
Unless modified by specific instruction in individual Sections, indoor Equipment Identification
Labels shall be made from laminated phenolic plastic 1-inch high by 2 -1/2 inches long, black background
with 1/8-inch machine engraved white letters. Sample Label Format:
PANEL 1234
LIFT STATION PUMPS
MASTER CONTROL PANEL
FEED FROM MCC-11A, UNIT 1A
E.
Outdoor equipment identification labels:
Outdoor equipment identification labels shall be engraved or stamped stainless steel and fastened to
the equipment in an immediately visible location with stainless steel screws or drive pins.
2.06
TERMINAL STRIPS, BLOCKS, AND DEVICES
A.
POWER TERMINAL BLOCKS FOR P-CIRCUITS (POWER 208 TO 600V):
Provide back plate mounted terminal strips rated not less than the conductor current rating nor less
than 600VAC. Terminals for circuits to 30A shall be pan-head strap screw type, used with wiring
terminated with ring type or locking fork terminals. Terminals for circuits above 30A shall be lug type.
B.
Control terminal blocks for c-circuits (control and/or power 120v or less power) and s-circuits
(signal):
1.
Terminal blocks shall be cage screw type suitable for direct termination of stranded control
wires.
a.
Rated not less than 20A nor less than 600V for C-circuits unless noted otherwise in the
equipment specifications
b.
Rated not less than 15A nor less than 300V for S-circuits.
c.
Pull apart terminal blocks: Rated not less than 10A nor less than 300V.
C.
Terminals shall be provided with integral marking strips.
D.
Acceptable Manufacturers:
1.
Power Terminal Blocks: Marathon Special Products, Ilsco or approved equal.
2.
Power Distribution Blocks: Marathon Special Products, Ilsco or approved equal:
3.
Control Standard (Switched): Entrelec type M 6/8.SNB
4.
Control Fused (BFI): Entrelec type ML 1011 3.SFL
5.
DIN rail: Phoenix Contact or Weidmuller Z-Series.
6.
Approved equal
2.08
FACTORY TESTING
Where specified in the specification section, perform factory tests at the place of fabrication. Perform
on completion of manufacture or assembly.
2.09
ELECTRICAL CIRCUITS DESIGNED AND INSTALLED BY THE CONTRACTOR
A.
Installation requirements not shown on the drawings:
There are systems and vendor packages for which it is necessary to install raceways and cables that are
not shown on the drawings or schedules. For these cases, circuits shall be installed as required to
provide complete and functional systems as described in the specification sections for the associated
system or vendor package. No installation of unscheduled circuiting in the scheduled cable trays or
raceways for these systems shall proceed without the prior written consent of the Engineer. It shall be
the Contractor’s responsibility to provide verification that the raceway fill capacity is not being
exceeded.
B.
Unscheduled raceway:
1.
Lighting and receptacle raceway are unscheduled and shall be sized by the Contractor in
accordance with the NEC. Minimum size shall be 3/4-inch for exposed and 1-inch for embedded
raceway.
2.
The number and size of raceways shall be as required for the particular equipment provided and
subject to the minimum sizes specified above. The type of raceway and fittings to be used for any given
area and application shall conform to the requirements for location/exposure in paragraph 16110-2.0 I,
Table A.
3.
All unscheduled wiring, cable, conduit, tray and terminal blocks shall be identified and labeled as
specified in this Section. Contractor shall obtain labeling information direction from the Engineer and
shall submit proposed labels prior to installation on cables or equipment. This information shall be
transferred to as built documents and drawings by the Contractor.
C.
Not used
D.
All other power circuits:
Do not combine power circuits without the authorization of the Engineer.
Part 3 Execution
3.01 Final Acceptance
Final acceptance of the project is dependent upon completion of all requirements of these
specifications and receipt by the Engineer of complete As Built red-line documentation from the
contractor.
Section 16470
Power Distribution Panelboards
PART 1--GENERAL
1.01
DESCRIPTION
A.
SUMMARY: This Section specifies panelboards for power distribution.
1.02 QUALITY ASSURANCE
A.
REFERENCED STANDARDS:
This Section incorporates by reference the latest revisions of the following documents. They are
a part of this Section as specified and modified. Where a referenced document contains references to
other standards, those documents are included as references under this Section as if referenced
directly. In the event of conflict between the requirements of this Section and those of the listed
documents, the requirements of this Section shall prevail.
Reference
Title
IEEE
Institute of Electrical and Electronic Engineers
NEMA National Electrical Manufacturing Association
ANSIII EEE C62.41
Recommended Practice for Surge Voltages in Low-Voltage AC Power Circuits
ANSI/IEEE C62.45
Circuits
Guide on Surge Testing for Equipment Connected to LowVoltage AC Power
ANSI 255.1-1967
Gray Finishes For Industrial Apparatus & Equipment
NEMA PB I
Panelboards
NEMA PB 2
Deadfront Switchboards
NFPA 70
National Electrical Code (NEC)
UL 50 Cabinets and Boxes
UL67
Underwriters Laboratories. Electric Panelboards
UL489 Molded-Case Circuit Breakers and Circuit Breaker Enclosures
UL 1449
Transient Voltage Surge Suppressors
1.03
SUBMITTALS
A.
Provide for approval prior to equipment purchase.
B.
Submittal to include the following information:
1.
Manufacturer's certification that bus bracing is capable of withstanding the specified short
circuit condition.
2.
used.
Quantity and rating of circuit breakers including short circuit rating for all circuit breaker types
3.
Applicable operation and maintenance information.
4.
Outline plan and elevation drawings with clearance requirements
5.
Test results for all specified testing.
6.
Equipment Identification label nomenclature.
PART 2--PRODUCTS
2.01
GENERAL
Panel boards shall be circuit breaker, dead front type, with bus bar construction of capacity
noted on the drawings. Minimum Interrupting Capacity of protective device shall be 42,000 amperes
unless specifically approved by the owner or owner’s representative.
A.
ACCEPTABLE MANUFACTURERS:
1.
General Electric, Eaton, Cutler-Hammer, Siemens, Square D
The panel board manufacturer's standard models or products may require modification to
conform to specified requirements. In this case, notify owner prior to equipment purchase.
2.02
ARRANGEMENT AND CONSTRUCTION
The front of the panel shall have concealed trim clamps and hinges. The locks shall be keyedalike and flush with tumbler-type cylinder and spring loaded door pulls. The fronts shall not be
removable with doors in the locked position.
Gutter space shall be provided on all sides of the breaker assembly to neatly connect and
arrange incoming wiring. Individually mounted circuit breakers shall be designed to be removable
without disturbing other breakers.
A directory holder with clear plastic plate and metal frame shall be mounted on the inside of the
door.
Enclosure rating to conform with Location/Exposure as shown in Section 16000.
2.03
BUS
Bus shall be tin-plated copper and shall have current ratings as shown on the panelboard
schedules, sized in accordance with UL 67. Ratings shall be determined by temperature rise test.
The minimum bus size shall be 100 amperes. Panel fault withstand rating shall be not less than
the interrupting rating of the smallest circuit breaker in the panel. Series rating is prohibited.
Panelboards shall be provided with a separate ground bus and, where specified, with a full
capacity neutral bus. The neutral bus shall be mounted on insulated stand-offs.
2.04
CIRCUIT BREAKERS
Circuit breakers shall be molded-case type provided for the current ratings and pole
configurations specified on the panelboard schedule. Circuit breakers shall be bolt-on type. Circuit
breakers shall be listed in accordance with UL 489 for the service specified. Load terminals of circuit
breakers shall be solderless connectors.
Circuit breakers rated 120/208 volt and 120/240 volt alternating current shall have a minimum
interrupting current rating of 18,000 amperes symmetrical.
Circuit breakers rated 277/480 volt alternating current shall have a minimum interrupting
current rating of 25.000 amperes symmetrical at 480 volt or as specified on the panelboard schedule.
Provide circuit breakers with special features such as ground fault interrupting (GFI), heating air
conditioning and refrigeration (HACR) rating, or locking capability as required by Code or shown on the
Drawings or Schedules.
2.05
PANELBOARD FINISH
The finish and color shall comply with Section 16000.
2.06
TRANSIENT VOLTAGE SURGE SUPPRESSOR
Each Panel board shall have integral TVSS protection on the main bus.
2.07
EQUIPMENT IDENTIFICATION AND PERSONNEL WARNING LABELS
A.
An Equipment Identification Label shall be provided identifying the Panelboard assembly as
specified in Section 16000.
B.
Provide a typed panel schedule detailing all pane I board circuit assignments and protective
device ratings.
C.
Manufacturer' s nameplate identifying the apparatus and providing ratings and catalog data.
D.
Manufacturer installed and NEC mandated labels for Personnel Safety.
PART 3--EXECUTION
3.01
FIELD TESTING
In addition to any testing herein, perform all testing for this product or system consistent with
the requirements of the applicable codes and the manufacturers' current quality assurance program.
3.02
PANEL SCHEDULES
Panel boards are scheduled on the Schedules in the Project Documents. Type in the circuit
description on the circuit directory or panelboard schedule and document changes, deletions and
additions in as-built documentation.
Section 16480
Service Equipment
PART 1--GENERAL
1.01
DESCRIPTION
A. SUMMARY: This Section specifies Utility requirements for customer provided and installed equipment
for provisions of electrical service and customer owned service entrance equipment for power
distribution.
1.02
QUALITY ASSURANCE
A. REFERENCED STANDARDS:
This Section incorporates by reference the latest revisions of the following documents. They are
a part of this Section as specified and modified. Where a referenced document contains references to
other standards, those documents are included as references under this Section as if referenced
directly. In the event of conflict between the requirements of this Section and those of the listed
documents, the requirements of this Section shall prevail.
Reference
IEEE
Title
Institute of Electrical and Electronic Engineers
NEMA National Electrical Manufacturing Association
ANSIII EEE C62.41
Recommended Practice for Surge Voltages in Low-Voltage AC Power Circuits
ANSI/IEEE C62.45
Circuits
Guide on Surge Testing for Equipment Connected to LowVoltage AC Power
ANSI 255.1-1967
Gray Finishes For Industrial Apparatus & Equipment
NEMA PB I
Panelboards
NEMA PB 2
Deadfront Switchboards
NFPA 70
National Electrical Code (NEC)
UL 50 Cabinets and Boxes
UL67
Underwriters Laboratories. Electric Panelboards
UL489 Molded-Case Circuit Breakers and Circuit Breaker Enclosures
UL 1449
Transient Voltage Surge Suppressors
1.03
SUBMITTALS
A.
Provide for approval prior to equipment purchase.
B.
Submittal to include the following information:
1.
Manufacturer's certification that bus bracing is capable of withstanding the specified short
circuit condition.
2.
used.
Quantity and rating of circuit breakers including short circuit rating for all circuit breaker types
3.
Applicable operation and maintenance information.
4.
Outline plan and elevation drawings with clearance requirements
5.
Test results for all specified testing.
6.
Equipment Identification label nomenclature.
PART 2--PRODUCTS
2.01
GENERAL
Switchboard shall be service rated and of circuit breaker, dead front type, with bus bar
construction of capacity noted on the drawings. Minimum Interrupting Capacity of protective device
shall be 42,000 amperes unless specifically approved by the owner or owner’s representative.
A.
ACCEPTABLE MANUFACTURERS:
1. General Electric, Eaton Cutler-Hammer, Siemens, Square D, Approved equal.
The switch board manufacturer's standard models or products may require modification to
conform to specified requirements. In this case, notify owner prior to equipment purchase.
2.02
ARRANGEMENT AND CONSTRUCTION
The front of the panel shall have concealed trim clamps and hinges. The locks shall be keyedalike and flush with tumbler-type cylinder and spring loaded door pulls. The fronts shall not be
removable with doors in the locked position.
Gutter space shall be provided on all sides of the breaker assembly to neatly connect and
arrange incoming wiring. Individually mounted circuit breakers shall be designed to be removable
without disturbing other breakers.
A directory holder with clear plastic plate and metal frame shall be mounted on the inside of the
door.
Enclosure rating shall be NEMA 3R for outdoor installation.
2.03
BUS
Bus shall be tin-plated copper and shall have current ratings as shown on the drawings, sized in
accordance with UL 67. Ratings shall be determined by temperature rise test.
The minimum bus size shall be 400 amperes. Panel fault withstand rating shall be not less than
the interrupting rating of the smallest circuit breaker in the panel. Series rating is prohibited.
Switchboard shall be provided with a separate ground bus and, where specified, with a full
capacity neutral bus. The neutral bus shall be mounted on insulated stand-offs.
2.04
CIRCUIT BREAKERS
Circuit breakers shall be molded-case type with frame and interchangeable trip unit ratings as
specified on the one-line diagram. If a manufacturer offers frame sizes differing from the drawings that
may satisfy requirement, submit to engineer for approval prior to purchase. All Circuit breakers shall be
bolt-on type. Circuit breakers shall be listed in accordance with UL 489 for the service specified. Load
terminals of circuit breakers shall be solderless connectors.
Circuit breakers rated 600 volt shall have a minimum interrupting current rating of 42,000
amperes symmetrical.
Provide circuit breakers with special features such as ground fault interrupting (GFI), heating air
conditioning and refrigeration (HACR) rating, or locking capability as required by Code or shown on the
Drawings or Schedules.
2.05
SAFETY DISCONNECT SWITCHES
A.
Safety disconnect switches shall be non--fused heavy-duty, 30-400-ampere ratings as indicated,
stainless steel operator, auxiliary contact kit. safety type rated 600 volts AC. The operating handle shall
be a positive, quick-make, quick-break mechanism capable of being padlocked in the "off' position and
have a “visible” open capability.
B.
Enclosure ratings in accordance with Location/Exposure as specified in Section 16000.
C.
Switches shall be horsepower rated for motors and shall comply with NEMA KS-I. Switches shall
be provided with defeatable door interlocks that prevent the door from opening when the operating
handle is in the "on" position. Switches shall have line terminal shields.
D.
ACCEPTABLE MANUFACTURER:
1.
Eaton/Cutler-Hammer
2.
GE
3.
Approved equal.
2.06
EQUIPMENT FINISH
The finish and color shall comply with Section 16000.
2.07
TRANSIENT VOLTAGE SURGE SUPPRESSOR
The Service Switchboard board shall have factory installed integral TVSS protection on the main
bus designed with adequate protective capacity.
2.08
EQUIPMENT IDENTIFICATION AND PERSONNEL WARNING LABELS
A.
An Equipment Identification Label shall be provided identifying the Panelboard assembly as
specified in Section 16000.
B.
Provide a typed panel schedule detailing all panel board circuit assignments and protective
device ratings.
C.
Manufacturer' s nameplate identifying the apparatus and providing ratings and catalog data.
D.
Manufacturer installed and NEC mandated labels for Personnel Safety.
PART 3--EXECUTION
3.01
FIELD TESTING
In addition to any testing herein, perform all testing for this product or system consistent with
the requirements of the applicable codes and the manufacturers' current quality assurance program.
3.02
EQUIPMENT SCHEDULES
Type in the circuit description on the circuit directory or panelboard schedule and document
changes, deletions and additions in as-built documentation.