DESIGN GUIDELINES
Division 26 - ELECTRICAL
Release 2.0
April, 2012
Released by:
Cleveland Clinic
Facilities and Construction
9500 Euclid Ave.
Cleveland OH 44195
All information within this Document is considered CONFIDENTIAL and PROPRIETARY. By
receipt and use of this Document, the recipient agrees not to divulge any of the information herein
and attached hereto to persons other than those within the recipients’ organization that have
specific need to know for the purposes of reviewing and referencing this information. Recipient
also agrees not to use this information in any manner detrimental to the interests of Cleveland
Clinic.
Cleveland Clinic
Design Guidelines
Copyright © 2012
By the Cleveland Clinic
These Specifications, or parts thereof, may not be reproduced in any form without
the permission of the Cleveland Clinic.

Cleveland Clinic Design Guidelines: Division 26 - Electrical
The following pages contain guidelines for the design and construction of new and
renovated facilities at all domestic Cleveland Clinic locations. They shall be used by A/E
firms in the preparation of drawings and specifications for construction of facilities.
The general purpose of each Design Guideline is to provide minimal criteria for design,
materials, and equipment at Cleveland Clinic facilities regarding Codes and FM Global
compliance, warranty, approved products, execution and uniformity.
The Guidelines are not Contract Specifications, but used to prepare more detailed, project
specific specifications. The Guidelines are intended to be used to address system design
aspects of equipment that Cleveland Clinic desires to standardize among facilities, and
identify prohibited materials and construction practices.
The use of these Guidelines is mandatory for all design or maintenance projects.
Deviations are discouraged. If project conditions arise which require a deviation, it shall
be thoroughly documented by the user and submitted to Cleveland Clinic for review and
approval using the Design Standards Revision Request document. Additionally, all
Cleveland Clinic staff, architects, engineers, and contractors are encouraged to participate
in the ongoing development of these guidelines by communicating any suggestions by
use of the Revision Request document.
*****


DESIGN GUIDELINES: DIVISION 26 – ELECTRICAL
1. MEDIUM VOLTAGE POWER CABLES (up to 35kV)
2. LOW VOLTAGE POWER CABLES
3. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
4. RACEWAYS, BOXES AND ENCLOSURES FOR ELECTRICAL SYSTEMS
5. OVERCURRENT PROTECTIVE DEVICE COORDINATION STUDIES
6. ELECTRICAL POWER MONITORING AND CONTROL
7. LIGHTING CONTROL DEVICES
8. NETWORK LIGHTING CONTROLS
9. SECONDARY UNIT SUBSTATIONS
10. MEDIUM VOLTAGE POWER TRANSFORMERS
11. MEDIUM VOLTAGE SWITCHGEAR
12. LOW VOLTAGE DRY TYPE TRANSFORMERS
13. LOW VOLTAGE SWITCHGEAR
14. PARALLELING LOW VOLTAGE SWITCHGEAR
15. LOW VOLTAGE SWITCHBOARDS
16. BRANCH CIRCUIT AND DISTRIBUTION PANELBOARDS
17. MOTOR CONTROL CENTERS AND MOTOR CONTROLS
18. ENCLOSED BUS ASSEMBLIES
19. WIRING DEVICES
20. LOW VOLTAGE FUSES
21. ENCLOSED SWITCHES AND CIRCUIT BREAKERS
22. VARIABLE FREQUENCY CONTROLLERS
23. ENGINE GENERATOR SYSTEMS
24. CENTRAL BATTERY EQUIPMENT
25. UNINTERRUPTIBLE POWER SUPPLY (UPS)
26. TRANSFER SWITCHES
27. LIGHTNING PROTECTION FOR STRUCTURES
28. SURGE PROTECTION DEVICES FOR LOW VOLTAGE ELECTRICAL
POWER CIRCUITS
29. INTERIOR LIGHTING
30. EXTERIOR LIGHTING
** End of List **
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE POWER CABLES
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Medium Voltage (5 to 35 kV) Cables and
accessories. Refer to Specification Section 260513 for detailed requirements.
1.2
A.
MEDIUM VOLTAGE CABLE REQUIREMENTS
Includes the following:
1.
2.
3.
4.
1.3
Cable.
Splices.
Terminations.
Separable connectors.
MEDIUM VOLTAGE CABLES
A.
Voltage Rating:
1.
5000 V for 4160 V distribution systems.
2.
15000 V for 11.4, 13.2, 13.8 kV distribution systems.
3.
15001 to 35000 V: per project requirements.
B.
Cables shall be UL type MV-105 and consist of compact stranded Copper conductors with 133
percent level Ethylene Propylene Rubber insulation. Strand and insulation screen shall be black
extruded semi-conducting thermoset. Shielding shall be helical wound copper tape or six copper
drain wires and outer jacket of Chlorinated Polyethylene (CPE).
1.4
A.
1.5
SPLICE KITS
Specify heat shrinkable or modular types that comply with IEEE 404.
TERMINATIONS
A.
Specify long barrel, 2 – hole, compression type termination lugs.
B.
Specify Class 1 or 2, heat shrinkable or modular type.
1.6
A.
SEPARABLE CONNECTORS
Dead-Break cable terminators: Elbow type, current rating and voltage class per project
requirements.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE POWER CABLES
B.
Load-Break cable terminators: Elbow type, current rating and voltage class per project
requirements.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification 260513.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Cable identification requirements: refer to Specification Section 260553.
C.
Testing and acceptance requirements: refer to Specification Section 260513.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE POWER CABLES
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Low Voltage (600 V and less) Cables and
accessories. Refer to Specification Section 260519 for detailed requirements.
1.2
A.
LOW VOLTAGE CABLE REQUIREMENTS
Includes the following:
1.
2.
3.
1.3
Cable.
Splices.
Terminations.
LOW VOLTAGE CABLES
A.
Voltage Rating:
1.
600 V for 480/277 V and 208/120 V distribution systems.
B.
Conductor: Soft, annealed copper, stranded, Class B compressed for #14 and larger.
C.
Minimum #12 awg for power and lighting circuits, #14 for control circuits.
D.
Insulation: XHHW for service conductors and feeders #2 awg and larger. THHN/THWN may
be specified for feeders up to 600 kcmil. THHN/THWN shall be specified for branch circuits,
except for Isolated Power Systems where XHHW-2 with dielectric constant of 3.5 or less shall
be used.
E.
Secondary service, feeder and branch circuit cables shall be color coded.
1.4
TERMINATIONS
A.
Only terminations UL486A listed for 90 deg C shall be specified.
B.
Cable termination lugs shall be long barrel, 2 – hole, compression type for 250 kcmil and above,
1 – hole for less than 250 kcmil.
1.5
MATERIALS NOT PERMITTED
A.
Aluminum conductors shall not be specified.
B.
Type MC Cable shall not be specified under any circumstances unless specifically approved in
writing by the Senior Director of Facilities.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE POWER CABLES
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 260519.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
No conductor smaller than No. 12 wire shall be used for branch circuit wiring. For “homeruns”
over 100 feet in length, no conductor smaller than a No. 10 wire shall be used. The tap
conductor from the J-box to the outlet may be No. 12. Each 120-volt phase conductor shall
have a neutral conductor of the same size. All feeder and branch circuits shall be sized by
conforming to the following provisions. Only lighting circuits shall share grounding conductors.
All lighting circuits with shared grounding conductors shall be #10 AWG minimum.
1.
480 Volt Branch Circuits: The voltage drop in the case of 480/277 volt circuits shall not
exceed 1.0 percent at maximum load and 70.0 percent power factor.
2.
208/120 Volt Branch Circuits: The voltage drop in the case of 208/120 volt circuits shall
not exceed 2.0 percent at maximum load and 70.0 percent power factor.
B.
Splices in feeder circuits shall be avoided unless necessitated by the length of the run.
C.
Do not use conductors larger than 600 kcmil. If necessary due to project conditions, use
paralleled conductors for sizes 250 kcmil up to and including 600 kcmil.
D.
Comply with current edition in effect of the National Electrical Code.
E.
All cables shall be identified in accordance with Specification Section 260553.
F.
Testing and acceptance requirements: refer to Specification Section 260519.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
PART 1 - GENERAL
1.1
SUMMARY
A.
This Guideline includes the requirements for grounding and bonding of electrical power and
lighting systems and equipment. This Guideline shall not be regarded as a Specification. Refer
to Specification 260526 for detailed requirements.
B.
The main purpose of the grounding system is to maintain a low potential difference between
metallic parts to protect personnel from electric shocks and to provide an effective system for
the flow of ground fault currents and lightning strikes.
C.
Drawings shall show ground systems, grounding and bonding cable sizes, and relative locations.
Cleveland Clinic Standard Detail drawings shall be utilized. Specifications shall include
detailed requirements of the grounding system. It is required that the Engineer specify all
applicable requirements. Specifying requirements by the use of NEC references only is
prohibited.
D.
If changes to an existing grounding system are needed, they shall be done in accordance with
Cleveland Clinic standards, and as described in Specification 260526.
1.2
RELATED DOCUMENTS
A.
Coordinate the requirements of this design guide with the general provisions of the “Lightning
Protection” Guide.
B.
Grounding of Low Voltage and Telecommunications systems shall be in accordance with the
Cleveland Clinic ITD Standards. Coordinate with the Systems Engineer all grounding and
bonding requirements for the project.
1.3
QUALITY ASSURANCE
A.
Comply with NFPA 70 and NFPA 99 requirements.
B.
Comply with FM Global requirements.
C.
Comply with IEEE 142 requirements.
PART 2 - PRODUCTS
2.1
CONDUCTORS
A.
Conductors for indoor applications shall be tinned-copper, stranded wire or cable with 600 V
green insulation, sized per NEC requirements.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
B.
Conductors for outdoor direct buried applications shall be bare, tinned, stranded Copper
conductors, minimum #4/0 awg.
C.
Grounding Busses shall be predrilled rectangular bars of annealed copper mounted on stand-off
insulators.
2.2
CONNECTIONS
A.
Specify exothermically welded type connections such as “Cadweld” for underground and
connections to structural steel.
B.
Specify clamp type connectors for connection to piping.
C.
Where connections need to be undone such as at a test well, bolted type connectors shall be
specified.
D.
Where terminating on ground bus bars, long barrel, compression type lugs shall be specified.
2.3
GROUNDING ELECTRODES
A.
Ground Rods shall be Copper-clad steel, 3/4 inch by 10 feet (19 mm by 3 m) in diameter.
PART 3 - EXECUTION
3.1
GROUNDING SYSTEM REQUIREMENTS
A.
For all new buildings, a below grade ground loop around the building shall be specified with
connections to building steel columns and foundation rebar (Ufer system). The lightning
protection system shall be bonded to this loop in accordance with NFPA 70 and 780. Ground
rods shall be placed at each corner and every 60 feet around the building.
1.
A ground test well shall be provided at a point closet to the service equipment.
2.
Maximum specified grounding system resistance values for new buildings shall five (5)
ohms; for sensitive electronic equipment systems, three (3) ohms.
B.
Where the Utility Company is the building power source, coordinate grounding and bonding of
the utility metering equipment in accordance with Utility Company’s requirements.
C.
Health care facilities: receptacle grounding, equipment grounding, ground fault protection,
panelboard grounding, isolated power system (where used) grounding, wet locations grounding,
and grounding of non current-carrying conductive surfaces of fixed electric equipment likely to
become energized that are subject to personal contact, etc. shall be in accordance with NEC
517. Details shall be shown on drawings.
D.
Insulated equipment grounding conductors shall be provided with all feeders and branch
circuits.
E.
Raceways shall not be used as grounding conductors.
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS
F.
Grounding Bus Bars shall be provided in electrical and telephone equipment rooms, in rooms
housing service equipment, and elsewhere as required. Provide ground risers of not less than
#2/0 Copper to bond all ground busses to the main electrical ground point.
G.
Grounding of specific communication, instrument, medical, computer, etc. equipment or
systems shall be provided as recommended by system vendor.
1.
Low voltage systems grounding shall be designed in accordance with the latest edition of
the Cleveland Clinic ITD Standards.
2.
Providing of separate grounding systems for computers that are completely isolated from
the building ground systems is prohibited.
H.
All exterior metal sheathing of buildings, such as metal curtain wall, shall be grounded to help
ensure personnel are not exposed to electrical shock hazards.
I.
Grounding of Secondary Neutrals and Transformer Enclosures:
Drawing.
J.
Grounding of underground distribution system components shall comply with IEEE C2
requirements.
K.
Manholes and Handholes shall be provided with a driven ground rod through manhole or
handhole floor, refer to Standard Detail Drawing.
L.
Pad-Mounted Transformers and Outdoor Switchgear shall be provided with a ground ring
around the equipment pad and at least two ground rods at opposite corners.
M.
All metal poles supporting outdoor lighting fixtures shall have a ground rod and a separate
insulated equipment grounding conductor in addition to grounding conductor installed with
branch-circuit conductors, refer to Standard Detail Drawing.
3.2
refer to Standard Detail
FIELD QUALITY CONTROL
A.
Testing and Inspections of grounding systems: refer to Specification 260526 for requirements.
1.
2.
Comply with NEC, IEEE, NFPA 99 and NEIS requirements.
The Engineer shall require the Contractor to perform all testing and witness such testing.
******
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
RACEWAYS, BOXES AND ENCLOSURES
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for raceways, boxes and enclosures. Refer to
Specification Sections 260533 and 260543 for detailed requirements.
1.2
A.
QUALITY ASSURANCE
Comply with the following Codes and Standards:
1.
FM Global.
2.
NFPA 70.
3.
NFPA 99.
4.
NEMA.
5.
ANSI.
6.
UL.
1.3
A.
GENERAL REQUIREMENTS
The following are acceptable raceway methods:
1.
2.
3.
4.
5.
6.
7.
Rigid galvanized steel (RGS).
Electrical metallic tubing (EMT).
Rigid polyvinyl chloride conduit (PVC).
Flexible metal conduit (FMC).
Liquid-tight flexible metal conduit (LFMC).
Surface metal raceways.
Surface non-metallic raceways.
B.
Prohibited materials.
1.
Electrical non-metallic tubing (ENT) sometimes referred to as “blue tube” or “smurf
tube”.
2.
Liquid-tight flexible non-metallic conduit (LFNC).
C.
The following shall be used only where specific project requirements dictate use of such:
1.
Rigid aluminum conduit.
2.
PVC coated rigid steel conduit.
D.
Non-metallic or non-ferrous raceways, boxes, fittings, etc. shall be specified for use in MRI
scan rooms.
E.
RGS conduit shall be specified for all circuits rated greater than 600 VAC routed inside
buildings.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
RACEWAYS, BOXES AND ENCLOSURES
F.
FMC shall be used for connection to recessed and semi-recessed light fixtures, for final primary
and secondary connections to Low Voltage transformers, and final connections to motors or
other vibrating equipment
G.
Use of surface raceways (e.g. Wiremold) in finished spaces shall be coordinated with the
Architect.
H.
Non-metallic surface raceways shall not be used in patient care areas such as patient rooms,
exam rooms, therapy rooms, recreational areas, solaria, and certain patient corridors.
I.
Minimum conduit size:
1.
Interior: ¾ inch.
2.
Exterior: below grade: one (1) inch.
1.4
A.
1.5
A.
1.6
FITTINGS
Specify the following:
1.
RGS: threaded fittings.
2.
EMT: set screw type.
3.
PVC: plastic with low VOC solvent cement.
FLOOR BOXES
Floor boxes shall be flush, rectangular, sheet metal type.
UNDERGROUND/EXTERIOR
A.
Underground raceways shall generally consist of Schedule 40 PVC conduit encased in
reinforced concrete. Conduit separation shall be maintained by spacers. Red dye shall be added
to the top of the concrete after the pour.
1.
Transitions from underground to above ground shall be made with rigid galvanized steel
elbows.
2.
For ductbanks containing circuits greater than 600 V, a separate grounding conductor
shall be run with the ductbank.
B.
Site lighting circuits shall be permitted to be run in direct buried PVC with appropriate cover.
C.
Exposed aboveground raceways shall be RGS or Schedule 80 PVC.
D.
Handholes shall be polymer concrete type. Traffic rating of lid shall be appropriate for the
location.
E.
Power and communications manholes shall be precast concrete type.
1.7
A.
IDENTIFICATION OF RACEWAYS AND BOXES
Comply with Specification Section 260553.
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
RACEWAYS, BOXES AND ENCLOSURES
B.
Conduits and boxes shall be factory color coded to identify electrical systems as follows:
1.
Life safety branch: purple.
2.
Critical branch: yellow.
3.
Emergency equipment branch: orange.
4.
Normal branch: green.
5.
Communications systems: blue.
6.
Low voltage systems: black.
7.
Fire alarm system: red.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS: Acceptable manufacturers are:
See Specification Sections 260533 and 260543 for approved manufacturers.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATIONS
A.
Comply with current edition in effect of the National Electrical Code and NFPA 99.
B.
Refer to Standard Electrical Detail Drawings for installation requirements.
*****
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
OVERCURRENT PROTECTIVE DEVICE COORDINATION STUDY
PART 1 - GENERAL
1.1
SUMMARY
A.
1.2
This Guideline includes computer-based, fault-current, overcurrent protective device
coordination and arc flash studies. Protective devices shall be set based on results of the
protective device coordination study. Refer to Specification Section 260573 for detailed
requirements.
GENERAL REQUIREMENTS
A.
1.3
On projects providing a new or replacing an existing power system or service greater than 1200
Amps, provide a fault current, device coordination and arc flash studies.
1.
The final study shall be performed by a Third Party Engineer provided by the Contractor
or Vendor.
2.
Use of series-rated devices is not permitted.
QUALITY ASSURANCE
A.
Studies shall be performed using computer software programs that are distributed nationally and
are in wide use. Hand calculated studies are not acceptable.
B.
Coordination-Study Specialist Qualifications: A Professional Engineer, licensed in the state
where Project is located, shall be responsible for the final study. All elements of the study shall
be performed under the direct supervision and control of the Engineer. The final submittal shall
be signed and sealed by the Professional Engineer responsible for the work.
PART 2 - PRODUCTS
2.1
COMPUTER SOFTWARE PROGRAM REQUIREMENTS
A.
Acceptable Software programs are provided in Specification Section 2626057.
PART 3 - EXECUTION
3.1
EXECUTION
A.
The Designer shall perform a preliminary power systems study in order to specify equipment
ratings.
B.
Submit study for review at the end of Design Development.
C.
The approved final study shall be submitted prior to any equipment energization and shall be
used for final settings of devices for job closeout and commissioning.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ELECTRICAL POWER MONITORING AND CONTROL
PART 1 - GENERAL
1.1
SUMMARY
A.
This Guideline includes PC-based computer and software for monitoring and control of
electrical power systems and includes a complete Power Management Communications System
(PMCS) to be shown on the drawings and shall be described in the specifications. Refer to
Specification Section 260913 for detailed requirements. The PMCS is defined to include, but
not to be limited to, remote devices for monitoring, control and protection, device
communication interface hardware, intercommunication wiring, master control unit including
UPS, software, ancillary equipment, startup and training services, and ongoing technical
support.
1.
2.
3.
B.
PCMS shall be specified for all new acute care facilities, ambulatory facilities, clinical,
research, administrative buildings, family health centers and central utility plants.
If feasible, renovation projects should install power monitoring equipment on any major
electrical equipment directly affected or modified by the work.
Power monitoring and metering are in addition to utility metering.
Power Management Communications System (PMCS):
1.
At a minimum, power monitoring and metering equipment should be provided for
medium-voltage switchgear on each main and distribution feeder circuit breaker, unit
substation transformer secondary low-voltage main and feeder circuit breakers,
generators and generator switchboards and paralleling switchboards, low-voltage
switchboards, major distribution panelboards, for both normal and essential electrical
systems, large motors ( >100 hp) and Central UPS systems. The power monitoring and
metering system shall have the capability of communication with the CCF centralized
remote metering station via a high speed Ethernet network.
2.
At a minimum, power monitoring and metering equipment shall record, store, and trend
voltage, current, kW, kWh, kVA, kVAR, power factor, and voltage and current total
harmonic distortion.
C.
PMCS shall be capable of communicating with the following devices to be shown on the
drawings or specified to be included in assembled equipment:
1.
Electronic Trip Units.
2.
Breaker Interface Modules.
3.
Breaker Controllers.
4.
Analog and Digital Input Modules.
5.
Energy Sub-meters.
6.
Motor Starters.
7.
VFC’s.
D.
Drawings for power monitoring and control equipment shall show system layout and connection
diagrams for interfacing with electrical equipment.
APRIL 2012
Page- 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ELECTRICAL POWER MONITORING AND CONTROL
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
2.2
Acceptable manufacturers are provided in Specification Section 260913.
SYSTEM REQUIREMENTS
A.
Specify factory-installed hardware and software to enable the Cleveland Clinic’s existing
system to monitor, display, and record data for use in processing reports.
B.
Software shall be specified to run on a single PC, with capability for accessing multiple devices
simultaneously. Modbus TCP/IP, RS-232, and RS-485 digital communications.
C.
Network Configuration shall be high-speed, multi-access, open non-proprietary, industry
standard communication protocol; LANs complying with EIA 485, 100 Base-T Ethernet, and
Modbus TCP/IP.
PART 3 - EXECUTION
3.1
COORDINATION
A.
Coordinate features of distribution equipment and power monitoring and control components to
form an integrated interconnection of compatible components.
1.
Coordinate the PMCS specification with the specifications of equipment that is
monitored or controlled by power monitoring and control equipment.
2.
The supplier of the PCMS shall be the same as the supplier of the electrical distribution
equipment.
*****
APRIL 2012
Page- 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LIGHTING CONTROL DEVICES
PART I - GENERAL
1.1
A.
1.2
A.
SUMMARY
This Section specifies the general requirements for Lighting Control Devices. This is a design
standard and is not to be used as a Specification. Refer to Specification 260923 for detailed
requirements.
GENERAL REQUIREMENTS FOR LIGHTING CONTROL DEVICES
Lighting Control Devices
1.
Luminaires with three, four or more lamps, switch the lamps symmetrically for two or
three levels of light.
2.
For day lighting areas in new or existing facilities, provide variable control for luminaires
located within 15 feet from perimeter windows. Provide photo sensor control for either
step or continuous dimming or bi-level switching. (In-board/Outboard). Remaining
luminaires within these areas shall be controlled separately.
3.
Where multiple room entrances are not immediately adjacent to each other, provide
three-way or four-way switching.
4.
Provide dual technology occupancy sensor (ultrasonic/PIR) controls in public toilet
rooms, conference rooms, examination rooms, offices and similar spaces. Occupancy
sensors shall be considered for all non-emergency egress luminaires in non-patient care
corridors. Occupancy sensors shall have an isolated relay output for connection to
mechanical systems when necessary.
5.
Patient room bed ward corridors shall be controlled from Nurse Stations.
6.
Infrequently used rooms such as crawl spaces, pipe spaces, interstitial spaces, attics, etc,
provide a pilot light outside the areas to indicate when lights are on.
7.
Electrical and Mechanical Rooms shall not be controlled by occupancy sensors.
8.
Low voltage lighting control panels shall be provided in all areas in which lighting is not
required to be on 24/7. Low voltage switches shall be provided for over ride of
programmed control of luminaires.
9.
Exterior site pole luminaires shall be controlled via a central photocell control. Refer to
ASHRAE 90.1 Exterior Lighting Control requirements for further information.
10. Exterior wall pack luminaires shall be controlled via a photocell integral to the luminaire.
Refer to ASHRAE 90.1 Exterior Lighting Control requirements for further information.
11. Dimmers shall be slide type with on/off control, single-pole or three-way as shown on
Plans. Faceplate color shall be coordinated with Architect and match device color.
12. Manual dimming controls shall be fully compatible with electronic dimming ballasts and
approved by the ballast manufacturer, shall operate over full specified dimming range
and shall not degrade the performance or rated life of the electronic dimming ballast and
lamp(s).
13. Lighting (including emergency lighting) in auditoriums, lecture halls, large conference
rooms, laboratories, etc., shall be capable of being shut off. Provide generator transfer
device to turn emergency lights on up to full brightness when power fails.
14. Provide photo-sensor controls to control luminaires in skylights or atrium ceiling areas to
turn the luminaires off if sufficient daylight is available.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LIGHTING CONTROL DEVICES
B.
Deviations
1.
Whenever deviations from Cleveland Clinic Standards and/or Design Guidelines may be
required, the Engineer shall submit a “Guideline Revision Request Form” applicable to
that specific Project fully describing the requested deviation.
2.
Request approval from CCF Facilities Engineering Department for the implementation of
any new or improved Lighting Control Devices products and/or systems that are energy
efficient or result in cost savings through submission of a “Guideline Revision Request
Form”.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 260923.
PART 3 - EXECUTION
3.1
A.
REQUIREMENTS FOR LIGHTING CONTROL DEVICES INSTALLATION
Comply with the edition in effect of the National Electrical Code and all applicable federal,
state and local requirements, referenced standards and conform to codes and ordinances of
Authorities Having Jurisdiction.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
NETWORK LIGHTING CONTROLS
PART I - GENERAL
1.1
SUMMARY
A.
This Section specifies the general requirements for Network Lighting Controls and Modular
Lighting Controls. This is a design standard and is not to be used as a Specification. Refer to
Specification Section 260943 for detailed requirements.
B.
The Cleveland Clinic intends to obtain LEED ratings for all new facilities. LEED criteria shall
be followed for the design and specification of lighting control systems. The Engineer shall be
responsible for the following items to ensure new facilities achieve LEED certification:
a.
Sustainable Sites - SS Credit 8
b.
Indoor Environmental Quality - IEQ Credit 6.1
1.2
NETWORK LIGHTING CONTROLS
Definitions:
A.
System shall be an open architecture system with the ability of complete monitoring and
control by a building management system and shall consist of networkable dimming
panels, switching panels, digital controls and shading systems tied to a central PC for
total lighting management.
a.
Central PC
1)
Shall enable management of entire lighting system from central location.
Software shall have capabilities to configure, maintain, and monitor all
systems.
2)
Time clock events, load shed capabilities, and seamless integration to BMS
via native BacNet IP protocol functions.
APRIL 2012
b.
Lighting Management Panels
1)
Shall tie independent lighting systems such as dimming panels, switching
panels, daylight harvesting digital controls, and low voltage roller shades to
the central PC.
2)
Shall have capacity for configurable links that each can be configured for
digital controls, addressable wallstations, low voltage control interfaces,
shade power panels, dimming/switching panels, and preset lighting
controllers.
c.
Architectural Dimming Panels
1)
Shall be specification grade dimming panels with main lugs and secondary
branch breakers.
2)
Offer universal 16A continuous dimming outputs.
3)
Be capable of 16A non-dim loads.
4)
Shall tie to lighting management panel using a link configured for panels.
d.
Light Duty Commercial Dimming Panels
1)
Flush or surface mounted containing 16A dimming or switching modules
with capability of multiple outputs from one 16A circuit.
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
NETWORK LIGHTING CONTROLS
2)
B.
1.3
Ties to lighting management panel using a link configured for panels.
e.
Relay Switching Panel
1)
Flush or surface mounted relay cabinet with 20 amp rated relays.
2)
Shall be feed-thru or main lug.
3)
Fully rated for continuous duty for inductive, capacitive, or resistive loads.
4)
Ties to lighting management panel using a link configured for panels.
f.
Modular Lighting Controller (refer to Modular Lighting Controls Section 1.3 Items
e, f, & g)
1)
Ties to lighting management panel using a configurable link.
g.
Addressable Wallstations
1)
Programmable to operate lights and/or shades as scenes, raise lower, or
toggle operation.
2)
Modular faceplate kits available to change wallstation configuration.
3)
Backlit and engraved buttons with red buttons identifying switched
emergency loads.
4)
Ties to lighting management panel using a configurable link.
h.
Shade Power Panel
1)
Provides power for up to 10 low voltage roller shades.
2)
Establishes communication between shades for grouping.
3)
Ties to lighting management panel using a configurable link.
All panels shall have a permanently affixed brass nameplate identifying where fed from
and loads served.
MODULAR LIGHTING CONTROLS
Definitions:
A.
System shall consist of independent switching/dimming panels, digital controls (daylight
harvesting) and shading systems. Some systems shall have built-in capability to be
networked to each other or to a lighting management panel.
APRIL 2012
a.
Preset Lighting Controls Modular Based
1)
Controls all load types via modular power panels.
2)
Capable of controlling digital addressable ballasts (up to 64).
3)
Have integral time clock.
4)
Capable of future networking via link to lighting management panel.
b.
Preset Lighting Controls Panel Based
1)
Shall control all load types via architectural dimming panels, light duty
commercial dimming panel or DC dimming panel.
c.
Relay Panel with Integral Timeclock
1)
Flush or Surface mounted relay cabinet with 20 amp rated relays.
2)
May be feed-thru or main lug.
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
NETWORK LIGHTING CONTROLS
3)
1.4
Fully rated for continuous duty for inductive, capacitive, or resistive loads.
d.
Dimming Panel with Integral Timeclock
1)
Flush or surface mounted containing 16A dimming or switching modules
with capability of multiple outputs from one 20A circuit.
e.
Modular Switching Controller
1)
Switch outputs rated for 20A.
2)
Occupancy sensors, daylight sensors, and wallstations wire directly to
modular controller.
3)
Programmable by sequence of button presses or external controller.
4)
Capable of networking with other modular controllers.
5)
Capable of future networking via link to lighting management panel.
f.
Lighting Control 0-10v Modular Controller
1)
0-10v outputs, and switch outputs rated for 20A.
2)
Occupancy sensors, daylight sensors, and wallstations wire directly to
modular controller.
3)
Programmable by sequence of button presses or external controller.
4)
Capable of networking with other modular controllers.
5)
Capable of future networking via link to lighting management panel.
g.
Lighting Control Digital Modular Controller
1)
1 or 2 Digital Links capable of controlling up to 64 digital addressable
ballasts, LED drivers, or modules.
2)
Occupancy sensors, daylight sensors, and wallstations wire directly to
modular controller or ballast.
3)
Programmable by external controller.
4)
Capable of networking with other modular controllers.
5)
Capable of future networking via configurable link to lighting management
panel.
h.
Low Voltage Roller Shades
1)
For control of natural light to optimize daylight harvesting, reduce glare and
heat gains.
2)
Up to 10 shades shall be powered by a shade power panel.
3)
Addressable wallstations control as open/close, presets, or fine adjustment
up/down.
4)
Capable of future networking via configurable link to lighting management
panel.
LIGHTING CONTROL IMPLEMENTATION PER AREA
A.
APRIL 2012
Public Areas
a.
Daylight harvesting via digital controls where sufficient natural light is available.
b.
Automatic roller shades to optimize daylight harvesting, control glare and heat
gain.
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
NETWORK LIGHTING CONTROLS
c.
Switching relays for interior locations via time clock, photocell, and/or manual
overrides.
B.
Patient Rooms
a.
Integrate lighting and shades into bedside controls via modular lighting controls.
b.
Incorporate low voltage wallstations to control both lights and shades with scene
capabilities and toggle override.
C.
Nurse Stations
a.
Utilize addressable wallstations to control designated light levels in corridor
immediate to nurse stations using switching.
1)
If corridor is utilizing dimmed fixtures, time clock events can be
configured to simulate natural circadian rhythms for interior corridor
areas.
D.
Conference Rooms
a.
Preset addressable wallstations control lights and shades via preset dimming
controllers and/or digital controls.
b.
A/V integration via contact closure, RS232, or Ethernet.
E.
Procedure Rooms
a.
Preset addressable wallstations to control lights via switching/dimming/digital
controls.
F.
Exam Rooms
a.
Local occupancy control utilizing dual technology devices.
G.
MRI Rooms
a.
Local 0-10VDC slide dimmer located at control room/desk to control luminaires
from 100% to 5% of rated lumen output with dimmable remote power supply.
H.
Private Offices
a.
Daylight harvesting via digital control photosensors where sufficient natural light
is available.
b.
Automatic roller shades to optimize daylight harvesting, control glare and heat
gain.
c.
Modular controller where no usable daylight is available.
d.
Local occupancy control utilizing dual technology devices.
I.
Small Restrooms; Utility Rooms; Storage Rooms
a.
Local occupancy control utilizing dual technology devices.
J.
APRIL 2012
Exterior Controls
a. Automatic controls shall be capable of turning off exterior lighting when sufficient
daylight is available or when the lighting is not required during night time hours.
Lighting not designated for dusk-to-dawn operation shall be controlled by an
astronomical time clock or relay system.
Page - 4
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
NETWORK LIGHTING CONTROLS
1.5
DEVIATIONS
A.
Whenever deviations from Cleveland Clinic Standards and/or Design Guidelines may be
required, the Engineer shall submit a “Guideline Revision Request Form” applicable to
that specific Project fully describing the requested deviation.
Request approval from CCF Facilities Engineering Department for the implementation of
any new or improved Network/Modular Lighting Controls products and/or systems that
are energy efficient or result in cost savings through submission of a “Guideline Revision
Request Form”.
B.
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
Acceptable manufacturers are provided in Specification Section 260943.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR NETWORK LIGHTING CONTROLS INSTALLATION
A.
Comply with the edition in effect of the National Electrical Code and all applicable
federal, state and local requirements, referenced standards and conform to codes and
ordinances of Authorities Having Jurisdiction.
*****
APRIL 2012
Page - 5
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SECONDARY UNIT SUBSTATIONS
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for secondary unit substations. Refer to
Specification Section 261116 for detailed requirements.
1.2
A.
UNIT SUBSTATION REQUIREMENTS
Unit Substation includes:
1.
2.
3.
4.
5.
6.
Primary switching.
Transformers.
Surge Protective Devices.
Metering and Communications.
Main and Tie devices.
Distribution devices.
B.
Provide double-ended substations with two main and one tie secondary circuit breakers for
acute care facilities, ambulatory surgery centers, research buildings, data centers, and central
utility plants.
C.
Provide single-ended substations with main secondary circuit breaker for family health centers,
administrative and office buildings.
D.
Size substations for anticipated peak load plus fifteen percent spare capacity for future growth.
1.3
PRIMARY SWITCHING
A.
15 kV class, metal enclosed, fused interrupter switchgear.
B.
Where only one Utility feeder is available, a single switch shall be provided on each primary.
When two Utility feeders are available, duplex or sectionalizing-loop feed switches shall be
specified.
C.
Primary surge arrestors.
1.4
TRANSFORMERS
A.
Liquid filled type, silicon fluid, meeting FM Global flammability requirements.
B.
All transformers shall be self-cooled and specified with factory installed cooling fans.
C.
All transformers shall comply with TP-1 energy efficiency requirements.
D.
All windings shall be Copper.
APRIL 2012
Page -1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SECONDARY UNIT SUBSTATIONS
E.
NEMA standard accessories.
F.
High voltage, delta primary, voltage depending on project requirements.
G.
Low voltage, wye secondary, 480/277 V or 208/120 V, depending on project requirements.
1.5
SURGE PROTECTIVE DEVICES
A.
Provide a UL1449 listed surge protective device (SPD) between transformer secondary and
each main device. SPD’s shall be integrally mounted in a barriered compartment and provided
with a disconnect device.
B.
Service entrance SPD’s shall be UL labeled as Type 1 devices.
C.
Refer to Specification Section 264313 for additional requirements.
1.6
METERING and COMMUNICATIONS
A.
Provide manufacturer’s standard digital multi-function metering on mains and feeders.
B.
Communications link shall be via Cleveland Clinic’s energy management software. See section
“Electrical Power Monitoring and Control”.
C.
The manufacturer defined communications bus shall be extended from main, tie and feeder
breakers to an externally mounted hinged pull box containing a manufacturer provided gateway
for connection to Cleveland Clinic’s monitoring system via Ethernet. System shall be
configured for monitoring only.
1.7
A.
MAIN and TIE DEVICES
All main and tie devices shall be drawout power air circuit breakers, 100% rated to safely
interrupt the available fault current.
1.
Refer to Design Guide for Low Voltage Switchgear for additional requirements.
B.
All devices shall be manually charged, electrically charged for main-tie-main arrangements.
C.
Provide key interlocking between main and tie devices so that all three breakers cannot be
closed at the same time. Automatic throw-over control shall be specified.
D.
Trip units shall be fully electronic RMS sensing type and provide the following functions:
1.
Long time.
2.
Short time.
3.
Ground fault. (All Main’s over 1200 A. on 480 V systems).
APRIL 2012
Page -2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SECONDARY UNIT SUBSTATIONS
1.8
DISTRIBUTION DEVICES
A.
All feeder devices shall be drawout power air circuit breakers, 100% rated to safely interrupt the
available fault current.
1.
Feeder circuit breakers shall be 800 Amp frame minimum.
2.
Refer to Design Guide for Low Voltage Switchgear for additional requirements.
B.
Trip units shall be fully electronic RMS sensing type and provide the following functions:
1.
Long time.
2.
Short time.
3.
Instantaneous.
3.
Ground fault. (All feeders for healthcare facilities)
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 261116.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code, FM Global requirements,
and all applicable federal, state and local requirements, referenced standards and conform to
codes and ordinances of Authorities Having Jurisdiction.
B.
All Unit Substations shall be indoor construction, located in ventilated and cooled, locked,
dedicated rooms. Allow for front and rear access. Provide four inch high concrete housekeeping
pads.
C.
All equipment shall be grounded in accordance with Specification Section 260526.
D.
Testing and acceptance requirements: refer to Specification Section 261116.
******
APRIL 2012
Page -3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE POWER TRANSFORMERS
PART I - GENERAL
1.1
SUMMARY
A.
This Guideline provides the general requirements for medium voltage transformers for sizes
from 75 – 5000 kVA, with primary from 2400 V to 25000 V. Refer to Specification Section
261200 for detailed requirements.
B.
Coordinate with Specification Section 261116 for transformers provided as part of a unit
substation.
1.2
TRANSFORMER REQUIREMENTS
A.
All transformers shall be UL listed and FM labeled.
B.
Transformer includes:
1.
2.
3.
Primary switching.
Transformers.
Accessories.
C.
Provide pad-mount type transformers for stand alone applications.
D.
Provide distribution style transformers when part of an indoor/outdoor unit substation
application.
E.
Size transformers for anticipated peak load plus fifteen percent spare capacity for future growth.
1.3
PRIMARY SWITCHING
A.
5/15/27 kV class, metal enclosed, fused interrupter switchgear when part of a unit substation
assembly.
B.
Pad-mount type: Outdoor, non-walk-in, free-standing, 5/15/27 kV class, metal enclosed, fused
interrupter switchgear.
1.4
TRANSFORMERS
A.
Liquid filled type, silicon fluid, meeting FM Global flammability requirements.
a.
Use of dry type transformers will be considered by the Standards Committee on a
case-by-case basis.
B.
Distribution type transformers shall be self cooled and specified with cooling fans and controls.
C.
Pad-mounted transformers shall be self cooled, compartmental type with barriered high and low
voltage sections and individual full height doors.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE POWER TRANSFORMERS
D.
All transformers shall comply with the latest DOE energy efficiency requirements.
E.
All windings shall be Copper.
F.
NEMA standard accessories.
G.
High voltage, delta primary, voltage depending on project requirements.
H.
Low voltage, wye secondary, 480/277 V or 208/120 V, depending on project requirements.
1.5
A.
1.6
A.
SURGE PROTECTIVE DEVICES
Provide a listed surge/lightning arrestor device for each phase on transformer primary for padmount types.
METERING and COMMUNICATIONS
Communications link shall be via Cleveland Clinic’s energy management software. See section
260913 “Electrical Power Monitoring and Control”.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 261200.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code and all applicable federal,
state and local requirements, referenced standards and conform to codes and ordinances of
Authorities Having Jurisdiction.
B.
All indoor transformers shall be installed on four inch high concrete housekeeping pads,
typically in a locked, dedicated, and ventilated electrical room complying with FM Global
requirements.
C.
All outdoor transformers shall be mounted on concrete pads designed by Structural Engineer.
D.
All equipment shall be grounded in accordance with Specification Section 260526.
E.
Testing and acceptance requirements: refer to Specification Section 261200.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE SWITCHGEAR
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Medium Voltage Switchgear Assemblies
which shall typically be the primary service entrance equipment. Refer to Specification Section
261300 for detailed requirements.
1.2
A.
MEDIUM VOLTAGE SWITCHGEAR (MVS) REQUIREMENTS
MVS includes:
1.
2.
3.
4.
5.
6.
7.
B.
Switchgear assembly.
Battery systems.
Surge Protective Devices.
Metering and Communications.
Primary disconnect devices.
Main and Tie devices.
Feeder devices.
The Primary Source of normal electrical power shall be obtained from the local public utility,
usually at 11.4 kV, 13.2 kV, or other medium distribution voltage.
1.
The Utility’s representative shall be invited to all utility coordination meetings.
C.
Provide double-ended switchgear with two main and one tie devices where two distinct Utility
feeds are available. Each utility feed shall be capable of carrying the entire facility load.
D.
Provide single-ended switchgear where only a single Utility feed is available.
E.
Size substations for anticipated peak load plus fifteen percent spare capacity for future growth.
F.
Comply with the applicable sections of the following Codes and Standards:
1.
NEC 70.
2.
NFPA 99.
3.
FM Global.
1.3
MEDIUM VOLTAGE SWITCHGEAR
A.
(5/15/27/38) kV class, metal enclosed, fused, load interrupter switchgear shall be specified for
primary overcurrent protection and switching of unit substation transformers.
B.
(5/15/27/38) kV class, metal-clad, draw-out, vacuum circuit breakers shall be specified for
distribution of high voltage service from the Utility.
1.
The switchgear shall consist of a factory assembled line up of breakers and auxiliary
compartments to form a self supporting rigid structure.
2.
Typical arrangement shall be Main-Tie-Main with Feeder devices.
3.
Bussing shall be silver plated copper, fully insulated and enclosed.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE SWITCHGEAR
4.
Outdoor enclosures shall be non-walk in (aisle-less), rain-tight type.
D.
Provide separate cubicles for Utility metering equipment. Obtain the Utility's approval of the
cubicle arrangements prior to fabrication of the switchgear.
E.
Provide at least one fully provisioned spare cubicle in the line up to allow for future growth.
1.4
BATTERY SYSTEMS
A.
Batteries shall be high discharge rate type lead calcium batteries. Battery voltage shall be 125
VDC nominal.
B.
Battery chargers shall be solid state, full wave rectifier type utilizing silicon controlled rectifiers
as the power-control elements.
1.5
A.
1.6
SURGE PROTECTIVE DEVICES
Provide UL listed distribution class surge arrestors connected to the incoming service leads.
Arrestors shall be integrally mounted in the switchgear enclosure.
METERING and COMMUNICATIONS
A.
Provide manufacturer’s standard digital multi-function metering on mains/feeders.
B.
Communications link shall be via Cleveland Clinic’s energy management software. See Section
260913 “Electrical Power Metering and Control”.
C.
The manufacturer defined communications bus shall be extended from main, tie and feeder
breaker relays to an externally mounted hinged pull box containing a manufacturer provided
gateway for connection to Cleveland Clinic’s monitoring system via Ethernet. System shall be
configured for monitoring only.
D.
Utility Metering Compartments: Coordinate with serving Utility requirements for Utility
furnished and installed metering.
1.7
MAIN and TIE DEVICES
A.
All main and tie devices shall be drawout power vacuum circuit breakers, rated to safely
interrupt the available fault current.
B.
Provide key interlocking between main and tie devices so that all three devices cannot be closed
at the same time. Automatic Throw-over shall be specified.
C.
Protective Devices - Protective relays for circuit breakers shall be Schweitzer (SEI) as indicated
below and shall be fully electronic RMS sensing type and provide the following functions:
1.
Time and ground (51, 51G).
2.
Instantaneous and ground (50, 50G).
3.
Lockout (86).
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MEDIUM VOLTAGE SWITCHGEAR
1.8
FEEDER DEVICES
A.
All feeder devices shall be drawout vacuum circuit breakers, rated to safely interrupt the
available fault current.
B.
Protective Devices - Protective relays for circuit breakers shall be Schweitzer (SEI) as indicated
below and shall be fully electronic RMS sensing type and provide the following functions:
1.
Time and ground (51, 51G).
2.
Instantaneous and ground (50, 50G).
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 261300.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code, FM Global requirements,
all applicable federal, state and local requirements, referenced standards, and conform to codes
and ordinances of Authorities Having Jurisdiction.
B.
All Switchgear Assemblies installed indoors shall be located in locked, dedicated rooms, ensure
adequate ventilation and cooling. Allow for front and rear access. Provide four inch high
concrete housekeeping pads for equipment.
C.
Outdoor installations shall be reviewed with the Cleveland Clinic Office of Facilities. All
Switchgear Assemblies installed outdoors shall be located above the 100 year floodplain and
mounted on concrete pads designed by Structural Engineer.
D.
All equipment shall be grounded in accordance with Specification Section 260526.
E.
Testing and acceptance requirements: refer to Specification Section 261300.
*****
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE DRY TYPE TRANSFORMERS
PART I - GENERAL
1.1
A.
1.2
SUMMARY
This Guideline provides the general requirements for dry type, air cooled distribution
transformers rated 600V and less, with capacities up to 1000 kVA. Refer to Specification
Section 262200 for detailed requirements.
LOW VOLTAGE TRANSFORMER REQUIREMENTS
A.
Capacity: Transformer size shall be based on known loads, with 15% capacity for future load
increase.
B.
Coils: Coil material shall be copper.
C.
Transformers shall comply with NEMA ST 20 UL 1561.
D.
Enclosures shall be suitable for the intended location.
E.
Taps: specify with 2 above and 2 below for transformers over 25 kVA.
F.
Specified Insulation Class: 220 deg C, UL-component-recognized insulation system with a
maximum of 115 deg C rises above 40 deg C ambient temperature.
G.
Specify Energy Efficient Transformers. Units rated 15 kVA and larger shall comply with
NEMA TP 1, Class 1 efficiency levels.
H.
Provide K – rated transformers for non-linear loads as follows: Transformers serving discharge
lighting loads shall have a K-4 rating, K-13 for UPS and telecommunications equipment, and K20 for Data Centers and VFC’s if harmonic analysis determines the need.
I.
For shielded transformers each winding shall have an independent, single, full-width copper
electrostatic shield.
J.
Specify transformers with reduced sound levels if transformer is to be installed in a location
where audible sound may be objectionable.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262200.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE DRY TYPE TRANSFORMERS
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Transformers shall be located in a locked room dedicated for electrical equipment. Ensure
adequate clearance around all equipment as well as ventilation. Coordinate the fire rating
requirements of the room with the NEC and the Fire Protection Engineer. Locate transformers
in areas where audible sound is not offensive to building inhabitants.
C.
All floor-mounted transformers shall be installed on four inch high concrete housekeeping pads.
Transformers rated 45 kVA or less may be wall mounted or hung from structural celings.
D.
Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical
Systems."
E.
Testing and acceptance requirements: refer to Specification Section 262200.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHGEAR
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Low Voltage Switchgear. Refer to
Specification Section 262300 for detailed requirements.
1.2
A.
LOW VOLTAGE SWITCHGEAR (LVS) REQUIREMENTS
LVS includes:
1.
2.
3.
4.
5.
Switchgear.
Surge Protective Devices.
Metering and Communications.
Main and Tie devices.
Distribution devices.
B.
Provide double-ended switchgear with two main and one tie where two distinct feeds are
available. Size equipment to allow one end to feed entire building load.
C.
Provide single-ended switchgear where only a single feed is available.
D.
Switchgear shall be UL Service Entrance labeled where necessary.
E.
Size switchgear for anticipated peak load plus twenty-five percent spare capacity for future
growth.
F.
Comply with the applicable requirements of FM Global.
G.
Switchgear shall comply with UL 1558.
1.3
LOW VOLTAGE SWITCHGEAR
A.
600V class, draw-out, 100% rated for continuous duty circuit breakers.
B.
The switchgear shall consist of a factory assembled line up of breaker/switch and auxiliary
compartments and instrumentation to form a self supporting rigid structure.
D.
1.
Bussing shall be silver plated copper, fully insulated and enclosed.
2.
Neutral bussing shall be 100% rated.
3.
An un-insulated ground bus shall extend the length of the switchgear.
Provide separate cubicles for metering equipment.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHGEAR
E.
Provide at least one fully provisioned spare cubicle in the line up to allow for future growth.
Spares shall be located on top of section.
F.
Minimum feeder breaker frame size shall be 600 A, with minimum sensor size of 600A which
can be set at 50% of breaker rating.
G.
Circuit breakers shall be manually operated. Breakers for main-tie-main arrangements shall be
electrically operated.
H.
Power for operating the trip units shall be obtained from within the individual circuit breaker
assembly.
1.4
A.
1.5
SURGE PROTECTIVE DEVICES
Provide UL listed surge protective devices (SPD) connected to the incoming service leads.
SPD’s shall be integrally mounted in a barriered compartment in the switchgear. See
Specification Section 264313 for detailed requirements.
METERING and COMMUNICATIONS
A.
Provide manufacturer’s standard digital multi-function metering on mains/feeders.
B.
Communications link shall be via Cleveland Clinic’s energy management software. See
Specification Section 260913 “Electrical Power Monitoring and Control”.
C.
The manufacturer defined communications bus shall be extended from main, tie and feeder
breakers to an externally mounted hinged pull box containing a manufacturer provided gateway
for connection to the Cleveland Clinic’s monitoring system via Ethernet. System shall be
configured for monitoring only.
1.6
MAIN and TIE DEVICES
A.
All main and tie devices shall be 100% rated for continuous duty, drawout power circuit
breakers rated to safely interrupt the available fault current.
B.
Provide key interlocking between main and tie devices so that all three devices cannot be closed
at the same time.
C.
Provide automatic transfer control equipment to transfer a load bus from its normal source of
supply to an alternate source. All transfer scheme logic shall be incorporated into and executed
by a Programmable Logic Controller (PLC). Under normal conditions both main breakers shall
be closed and the bus tie breaker is open.
D.
Protective Devices – Solid state, true RMS sensing electronic trip units with adjustable trip
settings:
1.
Long time.
2.
Short time.
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHGEAR
3.
4.
1.7
Ground fault.
Zone selective interlocking.
DISTRIBUTION DEVICES
A.
All feeder devices shall be 100% rated for continuous duty, drawout circuit breakers rated to
safely interrupt the available fault current.
B.
Minimum frame size shall be 800 A.
C.
Protective Devices - Solid state, true RMS sensing electronic trip units with adjustable trip
settings:
1.
Long time.
2.
Short time.
3.
Instantaneous.
4.
Ground fault (Healthcare facilities).
5.
Zone selective interlocking.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262300.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Switchgear Assemblies typically shall be installed indoors in a locked, dedicated room,
provided with adequate ventilation and cooling. Provide rear access for all switchgear with
working clearance according to NEC requirements. Provide four inch high concrete
housekeeping pads.
C.
All equipment shall be grounded in accordance with Specification Section 260526.
D.
Testing and acceptance requirements: refer to Specification Section 262300.
*****
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
PARALLELING LOW-VOLTAGE SWITCHGEAR
PART I - GENERAL
1.1
SUMMARY
A.
This Guideline describes the general requirements of control systems for paralleling generators
on an isolated bus and for distributing power in AC systems.
B.
Paralleling is the operation in which two or more generators are started, synchronized and then
connected to a common bus. Paralleling multiple generators increases reliability, flexibility in
load control, and maintenance.
C.
Paralleling Switchgear is a combination of protective relaying, metering, control and switching
components integrated to manage emergency power distribution. Paralleling Switchgear shall
be provided where two or more generators are supplying a common load. Typical installations
would include hospitals, acute care facilities, ambulatory surgery centers, research/lab facilities,
and data centers.
D.
Refer to Specification Section 262313 - Paralleling Low Voltage Switchgear for detailed
requirements.
1.
1.2
Related specifications include Section 262300 “Low Voltage Switchgear”, Section
263600 "Transfer Switches”, and Section 262312 "Engine Generators".
GENERATOR PARALLELING MONITOR AND CONTROL SYSTEM
A.
The Paralleling Switchgear shall be furnished with a dedicated microprocessor based controller
that provides supervisory and power transfer functions that works in conjunction with digital
generator controls to provide a fully automatic system for use in unattended applications.
B.
The Controller shall have the following minimum features:
1.
2.
3.
4.
5.
6.
7.
8.
Generator management.
Load management.
Individual generator start/stop.
System test/exercise.
Electrical metering.
Mechanical metering.
Alarm/event logging.
Remote communications and ability to interface with Cleveland Clinic’s Power
Monitoring and Control System.
C.
Paralleling and monitoring equipment, components, and accessories shall be mounted in the
switchgear control section of the switchgear lineup. An Operator Control Panel with graphical
display shall be specified.
D.
Paralleling shall be accomplished with UL listed power circuit breakers with integral storedenergy closing mechanisms. Circuit breakers shall be of draw-out design for interchangeability
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
PARALLELING LOW-VOLTAGE SWITCHGEAR
and ease of maintenance. Provide circuit breakers of the same manufacturer as other equipment
specified for the Project.
E.
1.3
A.
Communications link shall be via Cleveland Clinic’s energy management software. Refer to
Specification Section 260913 for requirements.
DESCRIPTION OF SYSTEM OPERATIONS
Upon loss of normal power all generators start and achieve rated voltage and frequency. The
generators are sequentially synchronized and closed on to the paralleling bus. If the bus
becomes overloaded the loads are shed until normal frequency is restored. If the load is below
preset limits for 15 minutes the controller shuts down generator sets in predetermined order
until minimum number of sets are operating.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262313.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
The installation shall comply with the current edition in effect of the National Electrical Code.
Where generators are installed indoors, the equipment shall be installed in the same room as the
generators. Where generators are installed outdoors, paralleling equipment shall be located in a
locked, dedicated and ventilated room; coordinate installation to allow front and rear access to
equipment. Provide a four inch high concrete housekeeping pad.
B.
See Specification Section 262313 for testing and installation requirements.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHBOARDS
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline specifies the general requirements for Low Voltage Switchboards. Refer to
Specification Section 262413 for detailed requirements.
1.2
A.
LOW VOLTAGE SWITCHBOARD REQUIREMENTS
LVS includes:
1.
2.
3.
4.
5.
Switchboard.
Surge Protective Devices.
Metering and Communications.
Main devices.
Distribution devices.
B.
Switchboards designated as Service Equipment shall have a single main device for
disconnecting the incoming service. Multiple main disconnects shall not be used.
C.
Switchboards shall be UL Service Entrance labeled where necessary.
D.
Distribution switchboards shall be served by a dedicated circuit beaker within the distribution
section of the Low Voltage Switchgear or Unit Substation.
E.
Size switchgear for anticipated peak load plus twenty-five percent spare capacity for future
growth, split between spare breakers and breaker spaces.
F.
The Engineer shall specify the short circuit rating of the equipment.
1.3
LOW VOLTAGE SWITCHBOARD
A.
All equipment shall be 600 V class, 100% rated for continuous duty circuit breakers, series
rated equipment is not acceptable.
B.
Switchboard construction shall comply with UL 891, all line and load connections shall be
accessible from the front.
C.
Continuous current rating of switchboards shall not exceed 2500 A, above this use low voltage
switchgear in accordance with Section 262300.
D.
The switchboard shall consist of a factory assembled line up of breaker and auxiliary
compartments and instrumentation to form a self supporting rigid structure.
1.
Bussing shall be silver plated copper.
2.
Neutral bussing shall be 100% rated.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHBOARDS
3.
A ground bus shall extend the length of the switchgear.
4.
Provide Neutral – Ground link for switchboards used as service equipment.
D.
Provide separate cubicles for metering equipment.
E.
Spaces for future devices shall be fully provisioned to accept circuit breakers without
modification and located at the top of the section.
F.
Minimum feeder breaker frame size shall be 250 A, with minimum sensor size of 250A which
can be set at 50% of breaker rating.
G.
Circuit breakers 1600 A or less shall be manually operated breakers larger than 1600 A shall be
electrically operated.
H.
All circuit breakers shall have provisions to be padlocked in the open or closed position.
1.4
A.
SURGE PROTECTIVE DEVICES
Provide UL listed surge protective devices (SPD) connected to the incoming leads or the line
side of the main device for switchboards used as service entrance equipment or those serving
sensitive loads. SPD’s shall be externally mounted immediately adjacent to the switchboard
enclosure. See Specification Section 264313 for detailed requirements.
1.5
METERING and COMMUNICATIONS
A.
Provide manufacturer’s standard digital multi-function metering on mains.
B.
Communications link shall be via Cleveland Clinic’s energy management software. See section
260913 “Electrical Power Monitoring and Control”.
C.
The manufacturer defined communications bus shall be extended from main breakers to an
externally mounted hinged pull box containing a manufacturer provided gateway for connection
to Cleveland Clinic’s monitoring system via Ethernet. System shall be configured for
monitoring only.
1.6
A.
MAIN DEVICES
All main devices shall be 100% rated for continuous duty, circuit breakers, rated to safely
interrupt the available fault current.
1.
B.
In general, all main devices less than 1600 A may be individually mounted molded case
power circuit breakers. 1600 A and above use draw-out power circuit breakers.
Protective Devices – Solid state, true RMS sensing electronic trip units with adjustable trip
settings:
1.
Long time.
2.
Short time.
3.
Ground fault (above 1000A, 480 V service).
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE SWITCHBOARDS
1.7
DISTRIBUTION DEVICES
A.
All feeder devices shall be 100% rated for continuous duty, molded case circuit breakers, rated
to safely interrupt the available fault current.
B.
All feeder devices 800 A or less may be panel mounted, above 800 A devices shall be
individually mounted.
1.
Group mounted devices shall not be specified in Patient Care areas.
C.
Protective Devices - Solid state, true RMS sensing electronic trip units with adjustable trip
settings:
1.
Long time.
2.
Short time.
3.
Instantaneous.
4.
Ground fault (Healthcare facilities where provided on main device).
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262413.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Typically switchboards shall be located indoors in a locked, dedicated room, provide with
adequate ventilation and cooling. Switchboards shall be front only accessible. Front and rear
accessible construction may be used where space permits. Where rear access is provided allow
for working clearance according to NEC requirements. Provide four inch high concrete
housekeeping pads for all switchboards.
C.
All equipment shall be grounded in accordance with Specification Section 260526.
D.
Testing and acceptance requirements: refer to Specification Section 262413.
*****
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
BRANCH CIRCUIT AND DISTRIBUTION PANELBOARDS
PART I – GENERAL
1.1
A.
1.2
SUMMARY
This Guideline provides the general requirements for panelboards, including the following up to
1200A and 600V. Refer to Specification Section 262416 for detailed requirements.
1.
Distribution Panels.
2.
Branch Circuit Panels.
3.
Electronic Grade Panels.
4.
Isolated Power Panels.
GENERAL REQUIREMENTS FOR PANELBOARDS
A.
Description: Panelboards shall comply with NEMA, UL and NFPA requirements.
B.
Enclosures: Provide door-in-door construction with lockable latch fasteners on all doors.
Locks shall conform to Cleveland Clinic standard locking scheme. Specify enclosures suitable
for the environment.
C.
Incoming Mains and Buses: Main over current devices, where installed, shall be circuit
breakers in accordance with Section 262816 “Switches and Circuit Breakers”. All bus bars and
terminations shall be copper. Panelboards shall be 100% neutral rated, except where used on
the secondary of K-rated transformers they shall be 200% neutral rated. Fully rated ground
busses shall be provided in all panelboards.
D.
Ratings: Service shall be three -phase, four-wire, use of single phase panels are not permitted.
Existing buildings with three phase service shall have only three phase panels provided.
1.
All panelboards shall be fully rated to interrupt symmetrical short-circuit current
available at terminals. Series rated panelboards are not acceptable. Minimum AIC
symmetrical ratings shall be 10K at 208V and 14K at 480V.
E.
Load center type panelboards shall not be specified.
F.
Sub-Feed breakers shall not be used.
G.
Use of panels with more than 42 poles is discouraged. If more than 42 poles are required, it is
preferred to provide an additional panelboard and divide the load.
H.
Branch Overcurrent Protective Devices shall be bolt-on thermal-magnetic circuit breakers.
I.
Do not provide main devices or feeders less than the panel bus rating.
J.
New panels shall be minimum 200 A for 208/120 V receptacle/small power panels serving
functional areas larger than 10,000 Square Feet, and 100 A for 480/277 V lighting panels.
K.
Size and Capacity: Panelboards shall be sized for the load plus 30% spare capacity, including
10% spare breakers and 20% spaces.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
BRANCH CIRCUIT AND DISTRIBUTION PANELBOARDS
L.
Provide Surge Protective Devices for panelboards in accordance with Section 264313.
M.
All operating suites shall be provided with two - 10 kVA isolated power panels, selected
procedure rooms (i.e. Lasers, etc.) shall be provided with one panel. Coordinate with Project
requirements. The panels shall serve no other rooms. All isolated power panels shall have a
main breaker, sixteen 20 A – 2P branch breakers, integral Line Isolation Monitor (LIM), and
non-ventilated stainless steel front. Panels are typically ten inches deep; coordinate proposed
locations of panels with Architect. Refer to Specification Section 262011 for detailed
requirements.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262416.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR INSTALLATION
A.
Comply with the edition in effect of the National Electrical Code and NFPA 99.
B.
Panels shall only serve devices that are located on the same floor as the panel; Life Safety
Branch panels may serve devices on the floor above.
C.
Panelboard loads shall be separated based on type. Motor loads and sensitive electronic loads
shall not be served from the same panelboard. The Engineer shall review the load types to
verify such conflicts are avoided.
D.
Locate panels such that branch circuits will not exceed 100 feet in length.
E.
In high density electrical utilization areas where circuit requirements exceed 12 poles, provide a
dedicated panel for that area.
F.
Panelboards should generally be located in locked electrical rooms with a 1-hour fire rating, do
not install panelboards in corridors.
G.
Flush mount panelboards in finished spaces, surface mount in utility spaces.
1.
Do not mount panelboards in fire-rated walls.
H.
Provide at least six 1” empty conduits stubbed above ceiling in finished spaces with flush
mounted panels.
I.
Branch circuits shall not share neutral conductors.
J.
Testing, adjusting and acceptance requirements: refer to Specification Section 262416.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MOTOR CONTROL CENTERS and MOTOR CONTROLS
PART I - GENERAL
1.1
A.
1.2
SUMMARY
This Guideline provides the general requirements for motor control centers, including
arrangement of components, starters, overcurrent protection and auxiliary devices. Refer to
Specification Sections 262419 and 262913 for detailed requirements.
GENERAL REQUIREMENTS FOR MOTOR CONTROL CENTERS
A.
Motor Control Centers (MCC’s) shall be provided in Mechanical Rooms where more than six
motors are installed or other areas where motors are grouped reasonably close together. Avoid
feeding motors from lighting or receptacle panels.
B.
Motor control centers shall be of the freestanding type complying with the design and function
requirements of the Project. MCC’s shall be factory-assembled, dead front, self-supporting
motor control centers consisting of required vertical sections bolted together to form one rigid
assembly.
C.
Enclosures shall be NEMA Type 1. Wiring shall be Class I, Type B.
D.
All Bussing shall be copper. Specify half capacity Neutral bus in all MCC’s. Bus shall be
braced for maximum available fault current, Engineer shall specify bracing.
E.
Provide energy metering for MCC breakers or starters that will interface with Cleveland
Clinic’s Energy Management System or to comply with LEED requirements.
F.
Install power factor correction capacitors on all motors 50 HP and larger. Do not install
capacitors on any installation where the motor is controlled by a solid state device such as a
VFC. Correct power factor to 95%.
1.3
MOTOR STARTERS
A.
Motor starters shall be minimum NEMA Size One for uniformity and maximum
interchangeability and shall be combination type equipped with circuit breakers or fusible
switches.
B.
For motors 50 HP and larger, use reduced voltage starting if VFC not provided.
C.
Motor starters shall be as specified in Specification Section 262913 Enclosed Controllers.
D.
Do not specify IEC rated components.
E.
Provide communication modules for designated motor starters in accordance with Specification
Section 260913 “Electrical Power Monitoring and Control”.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
MOTOR CONTROL CENTERS and MOTOR CONTROLS
1.4
A.
1.5
VARIABLE FREQUENCY CONTROLLERS (VFC)
Refer to Mechanical Specification Section 232923 for requirements for VFC’s to be provided in
Motor Control Centers.
OVERCURRENT PROTECTION
A.
Overcurrent protection and disconnecting means shall be thermal-magnetic MCCB with
interrupting capacity to comply with available fault currents or fusible switch with Class R
fuses.
B.
Provide overload protection in all three phases for three-phase motors, and in all “hot” legs for
single phase motors.
1.6
CONTROL DEVICES
A.
Magnetic motor starters shall have rotary selector switch “Hand – Off – Auto” controls. For
motors without automatic control, the Auto position shall be left open.
B.
Provide a red “ON” and a green “OFF” pilot light (LED) for each starter.
C.
Control circuits shall operate at 120V. 480V starters shall have internal control transformers.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262419.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR INSTALLATION
A.
MCC’s shall be located away from high ambient temperatures and radiant heat sources.
B.
MCC’s shall be installed on 4” high concrete housekeeping pads.
C.
Identification nameplates for MCC and each cubicle shall be provided per Specification Section
260553.
D.
For testing, adjusting and acceptance requirements refer to Specification Section 262419.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENCLOSED BUS ASSEMBLIES
PART I - GENERAL
1.1
A.
1.2
SUMMARY
This Guideline provides the general requirements for low voltage enclosed bus duct and
associated plug-in devices. Refer to Specification Section 262500 for detailed requirements.
GENERAL REQUIREMENTS FOR ENCLOSED BUS ASSEMBLIES
A.
The use of Feeder busways shall be considered for all feeders greater than 1200 Amperes.
B.
The use of Plug-In busways shall be considered for Vertical power distribution in buildings
more than four stories in height.
1.
The use of Plug-In busways shall not be permitted in patient care towers unless approved
by the Office of Facilities Engineering.
C.
The use of short runs of feeder busway shall be considered to connect switchgear line ups or
switchgear to transformers in electrical rooms.
D.
Existing low voltage busways are either to be extended and/or additional plug-in units are to be
installed. The new material shall match existing type, capacity and manufacturer, and the
installation method shall match existing.
E.
Bus Assemblies shall be low-impedance, in non-ventilated housing using single-bolt joints;
current/voltage ratings per project requirements.
F.
Bus shall be copper with silver plated contact surfaces and fully insulated except at joints. The
bus bar shall be braced to withstand a short current of maximum RMS symmetrical rating as
determined by the Engineer.
G.
Housings shall be aluminum, totally enclosed and non-ventilated.
H.
Provide integral copper ground bus through the length of the busway and fittings.
1.3
A.
PLUG-IN UNITS
Use only interchangeable plug-in units on busways. Units shall be circuit breaker type. Circuit
breakers shall comply with Specification Section 262816.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262500.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENCLOSED BUS ASSEMBLIES
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR INSTALLATION
A.
Comply with the edition in effect of the National Electrical Code and all applicable federal,
state and local requirements, referenced standards and conform to codes and ordinances of
authorities having jurisdiction.
B.
Bus assemblies shall be fully accessible at joints and fittings.
C.
Allow for expansion fittings at locations where bus assemblies cross building expansion joints
and where run exceeds 200 feet in length. Provide at other locations so distance between
expansion fittings does not exceed manufacturer's recommended distance between fittings.
D.
Identification nameplates for busway and each plug-in unit shall be per Specification Section
260553.
E.
For testing, adjusting and acceptance requirements refer to Specification Section 262500.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
WIRING DEVICES
PART 1 - GENERAL
1.1
SUMMARY
A.
This Guideline includes requirements for the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
B.
1.2
Receptacles, receptacles with integral GFCI, and associated device plates.
Twist-locking receptacles.
Isolated-ground receptacles.
Hospital-grade receptacles.
Tamper-resistant receptacles.
Weather-resistant receptacles.
Snap switches and wall-box dimmers.
Wall-switch occupancy sensors.
Floor service outlets, poke-through assemblies, and multi-outlet assemblies.
Refer to Specification Section 262726 for detailed requirements.
GENERAL REQUIREMENTS
A.
Wiring Devices shall be provided where required by the Building Program and as follows:
1.
2.
3.
4.
5.
6.
7.
B.
1.3
Office and Administrative areas, Corridors: heavy duty, specification grade.
Mechanical and Electrical rooms, warehouse, toilet rooms (staff, public): heavy duty,
specification grade.
Healthcare occupancies shall have Hospital Grade devices throughout.
Toilet rooms (patient care areas): hospital grade.
Surgical, procedure, patient care, recovery, diagnostic, imaging and similar: hospital
grade.
MRI Suites: hospital grade with non-magnetic strap, screws, etc.
Pediatric areas: tamper resistant, hospital grade.
Wiring device requirements:
1.
Type, quantity and locations of receptacles, switches, etc. shall be as described in the
“Room Specific Design Guidelines” in the Cleveland Clinic Design Standards Manual.
2.
Comply with National Electrical Code.
3.
Comply with NFPA 99.
PROHIBITIED MATERIALS
A.
Residential grade devices.
B.
Power service poles.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
WIRING DEVICES
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
2.2
Acceptable manufacturers are provided in Specification Section 262726.
GENERAL WIRING-DEVICE REQUIREMENTS
A.
All wiring Devices, Components, and Accessories shall be listed and labeled as defined in
NFPA 70, by Underwriters’ Laboratories, and marked for intended location and application.
B.
Specify devices UL listed for use with stranded building wire.
2.3
STRAIGHT-BLADE RECEPTACLES
A.
Hospital Grade, Isolated Ground, and Convenience Duplex Receptacles: 125 V, 20 A,
Configuration NEMA 5-20R.
B.
Tamper-Resistant Convenience Receptacles: 125 V, 20 A, NEMA Configuration 5-20R.
Comply with UL 498, Supplement SD.
1.
2.4
Description: Label shall comply with NFPA 70, "Health Care Facilities" Article, and
“Pediatric Locations" Section.
GFCI RECEPTACLES
A.
2.5
General Description:
1.
Non-feed-through type.
2.
NEMA Configuration 5-20R, 125 V, 20 A.
HAZARDOUS (CLASSIFIED) LOCATION RECEPTACLES
A.
2.6
Wiring Devices for Hazardous (Classified) Locations shall comply with Building Program
requirements.
TWIST-LOCKING RECEPTACLES
A.
2.7
Single Convenience Receptacles: configuration shall comply with Building Program
requirements.
WALL –SWITCH OCCUPANCY SENSORS
A.
See “Lighting Controls” Design Guide for requirements.
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
WIRING DEVICES
2.8
TOGGLE SWITCHES
A.
2.9
Switches, Pilot-Light Switches, Key-Operated Switches: 120/277 V, 20 A.
WALL-BOX DIMMERS and OCCUPANCY SENSORS
A.
2.10
See “Lighting Controls” Design Guide for requirements.
WALL PLATES
A.
Single and combination types.
1.
Material for Finished Public Spaces (FHC): Smooth, high-impact, commercial grade
nylon or Noryl. Color by Architect.
2.
Material for Imaging, Surgical, Diagnostic, Laboratories, Patient Care, and Treatment
areas (ASC), satin-finished Type 302 stainless steel.
3.
MRI suites: non-magnetic plates and screws.
4.
Material for Unfinished Spaces: satin-finished Type 302 Stainless steel.
B.
Wet-Location, Weatherproof Cover Plates:
lockable cover.
2.11
weatherproof in use, die-cast aluminum with
FLOOR SERVICE FITTINGS
A.
Type: for floor boxes, coordinate with requirements of Section 260533 Raceways and Boxes.
B.
Power Receptacle: comply with Building Program requirements.
C.
Voice and Data Communication Outlet: coordinate with requirements in Division 27 Section
"Communications Horizontal Cabling."
D.
Comply with UL 514 scrub water exclusion requirements.
2.12
A.
POKE-THROUGH ASSEMBLIES
Description:
1.
2.
3.
2.13
A.
Dual service for power/data. Provide outlets to match Building Program requirements.
Comply with UL 514 scrub water exclusion requirements.
Fire Rating: Unit is listed and labeled for fire rating of floor-ceiling assembly.
MULTI-OUTLET ASSEMBLIES
Assemblies with prewired 20A/120V receptacles spaced 12 to 24 inch on centers, metal or
plastic housing, with snap on covers.
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
WIRING DEVICES
B.
2.14
A.
Use in new construction is discouraged, may be used in renovation type projects or laboratories
where Building Program requirements call for accessibility to power in locations such as
benchtops.
FINISHES
Device Color:
1.
2.
3.
Wiring Devices Connected to Normal Power System: As selected by Architect.
Wiring Devices Connected to Emergency Power System: Red.
Isolated-Ground Receptacles: Orange.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
Installation of wiring devices shall comply with NEC and NFPA 99.
B.
Circuiting guidelines:
1.
Convenience receptacles – 6 unassigned receptacles per circuit.
2.
Computer/data – 3 dedicated receptacles per circuit.
3.
Equipment – dedicated circuit.
4.
Three circuits per homerun conduit.
5.
Neutrals shall not be shared.
6.
Corridor receptacles shall not be circuited to adjacent room circuits.
C.
Comply with Division 26 Section "Identification for Electrical Systems"; receptacles shall be
identified with panelboard identification and circuit number.
3.2
FIELD QUALITY CONTROL
A.
Tests and inspections for wiring devices shall be accordance with Section 262726.
1.
In healthcare facilities, reports that comply with recommendations in NFPA 99 shall be
provided by the Contractor and reviewed by the Engineer.
*****
APRIL 2012
Page - 4
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE FUSES
PART 1 - GENERAL
1.1
SUMMARY
A.
This Guideline includes:
1.
2.
1.2
Requirements for use of cartridge type fuses rated 600-VAC and less.
Refer to Specification Section 262813 for detailed requirements.
GENERAL REQUIREMENTS
A.
Fuses shall be permitted for the following type circuits only:
1.
Motor circuits.
a.
b.
c.
2.
3.
4.
B.
1.3
In combination starters located in Motor Control Centers.
In separately mounted combination motor starters.
In switches used as local disconnects for motors or hermetic compressors.
Control circuits or for protection of control power transformers.
Elevator feeders and elevator disconnect switches.
Class J fuses shall not be specified for motor protection.
Fuse applications:
1.
Motor circuits: Class RK-1, time delay.
2.
Control circuits: Class CC, fast acting.
QUALITY ASSURANCE
A.
1.4
Fuses shall comply with NEMA FU 1 for cartridge fuses and NFPA 70.
COORDINATION
A.
Coordinate fuse ratings with system short-circuit current levels as defined in the “Overcurrent
Device and Short Circuit Study” (Section 260573).
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
Acceptable manufacturers are provided in Specification Section 262813.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LOW VOLTAGE FUSES
PART 3 - EXECUTION
3.1
GENERAL
A.
Comply with the edition in effect of the National Electrical Code.
B.
Testing and acceptance requirements: refer to Specification Section 262813.
******
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
PART I - GENERAL
1.1
A.
1.2
SUMMARY
This Guideline provides the general requirements for enclosed switches, separately mounted
molded case circuit breakers, and shunt trip switches for elevators. Refer to Specification
Section 262816 for detailed requirements.
SWITCHES – GENERAL REQUIREMENTS
A.
All Switches shall be Heavy Duty type, horsepower rated, with number of poles and ampere
rating determined by the load. General duty switches shall not be specified.
B.
Switches shall be specified with rejection type fuse clips.
C.
Specify enclosures suitable for the intended location.
D.
All motors and mechanical equipment shall have local disconnect switches. Fusible switches
shall be used where required for overcurrent protection of the motor or equipment.
1.3
MOLDED-CASE CIRCUIT BREAKERS – GENERAL REQUIREMENTS
A.
For frame sizes up to 1600 A molded case breakers shall be used.
B.
Specify thermal magnetic circuit breakers up to 250 A.
C.
Circuit Breakers 250 amp and larger shall have adjustable electronic trip units.
D.
Circuit breakers used for specific applications shall have the appropriate application listing.
E.
Specify enclosures suitable for the intended location.
1.4
SHUNT TRIP SWITCHES FOR ELEVATORS
A. Engineer shall verify local code requirements for use of shunt trip devices.
B. When sprinklers are installed in elevator hoistways or machine rooms, power must be switched off
prior to activating these sprinklers. This can be accomplished by providing a shunt trip device on
the elevator power circuit disconnecting means. It is recommended a fusible shunt trip power
module be specified for this purpose.
C. Fusible shunt trip power modules for elevators shall contain power switch, fuse block, shunt trip
mechanism, integral control power transformer and auxiliary contacts for alarm and tripping
functions, fire alarm voltage monitoring relay, and fire safety interface relay.
D. Fusible shunt trip power modules shall comply with the following:
1.
ANSI/ASME.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
2.
3.
4.
NFPA 70.
NFPA 72.
UL listed package.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 262816.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Ensure labeling and acceptance procedures are per Specification Section 262816.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
VARIABLE FREQUENCY CONTROLLERS (VFC)
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Variable Frequency Controllers (VFC).
VFCs shall be furnished under Division 23 and installed by Division 26. For exact
requirements refer to Specification Section 232923.
1.2
GENERAL REQUIREMENTS VFD CONTROLLERS
A.
Description: Variable Frequency Controllers (VFCs) may be used to vary the flow of air and
water. VFCs shall be factory packaged in an enclosure, with integral disconnecting means and
overcurrent and overload protection; listed and labeled by an NRTL as a complete unit;
arranged to provide self-protection, protection, and variable-speed control of one or more threephase induction motors by adjusting output voltage and frequency.
B.
VFCs shall be locally mounted near the motor to limit the distance from the drive to motor to no
more than 75 feet.
C.
Manual bypass starters for VFCs should be considered on a case by case basis where life safety
or risks of extensive losses are an issue.
D.
A dry common trouble alarm contact shall be provided for input to the BAS.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 232923.
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR INSTALLATION
A.
Comply with the edition in effect of the National Electrical Code.
B.
Testing, adjusting and acceptance requirements: refer to Specification Section 232923.
*****
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENGINE-GENERATOR SYSTEMS
PART 1 - GENERAL
1.1
SUMMARY
A.
This Section includes requirements for engine-generator sets for Level 1 emergency power
supply.
B.
Related Sections include the following:
1.
1.2
Coordinate requirements of this section with those of Section 263600 "Transfer
Switches" and Section 262313 “Paralleling Low Voltage Switchgear”.
GENERAL REQUIREMENTS
A.
Emergency generator(s) shall typically be provided as the Alternate Power Source for the
following facilities where the interruption of electric power to a building would result in hazard
to life or property, or major loss of research or equipment:
1.
2.
3.
4.
5.
Acute care hospital.
Research and laboratory buildings.
Data processing facilities.
Ambulatory surgery centers.
Central plants.
B.
The alternate source of power shall be one or more diesel-engine-driven-generator sets. Provide
physical space for one additional generator; paralleling switchgear shall be appropriately
provisioned.
C.
Emergency generator(s) may be provided as the Alternate Power Source for the following
facilities:
1.
2.
3.
4.
D.
Family health centers.
Office/administrative facilities.
Storage/warehouse.
Outpatient clinics.
Emergency generators are not mandatory for non-patient care facilities since battery packs can
adequately handle the Life Safety requirements of NFPA No. 101 and the lowering of elevators
in case of a power outage. If there are unusual emergency loads, cost considerations shall
determine whether an emergency generator would be cost effective.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENGINE-GENERATOR SYSTEMS
1.3
QUALITY ASSURANCE
A.
Prepare and submit calculations that justify the size of each generator or paralleled fleet of
generators, including but not limited all downstream loads of the generator set(s) and capacity
reserved for future loads. If applicable under NEC Article 517, demand factors and historical
data used to justify generator set(s) sizing shall be submitted.
1.
Oversizing the generator compared with the rated power output of the engine is
permissible to meet specified performance for Sensitive Loads.
2.
Typically size generator(s) for 125% of projected peak load.
3.
Emergency generator(s) shall not be used for load shaving.
B.
Electrical Components, Devices, and Accessories:
Laboratories.
C.
Comply with ASME B15.1.
D.
Comply with NFPA 37.
E.
Comply with NFPA 70.
F.
Comply with NFPA 99.
G.
Comply with NFPA 110 requirements for Level 1 emergency power supply system.
H.
Comply with FM Global requirements.
I.
Comply with latest EPA Tier requirements.
J.
Engine Exhaust Emissions: Comply with applicable state and local government requirements.
K.
Noise Emission: Comply with applicable state and local government requirements for
maximum noise levels.
L.
Coordinate mechanical engineering elements of the generator system design with the A/E’s
Mechanical Engineer and Cleveland Clinic Mechanical Design Guidelines.
1.
Listed and labeled by Underwriters’
Including but not limited to exhaust piping, fuel storage, pumping, and piping.
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
Acceptable manufacturers are provided in Specification Section 263213.
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENGINE-GENERATOR SYSTEMS
2.2
ENGINE-GENERATOR SET
A.
Engine: Four-stroke, 1800 rpm, diesel fueled. Natural gas/LP fueled units are not acceptable.
1.
Start Time: Comply with NFPA 110, Type 10, system requirements, generator system
shall accept full load in one step.
2.
Engine-generators shall be rated for “Stand-By Duty”.
B.
Adjustable isochronous governors shall be specified.
C.
Cooling System: Prefer liquid cooled, with radiator factory mounted on engine-generator-set.
1.
Use of remote mounted radiators is discouraged.
D.
Muffler/Silencers shall be hospital grade, critical type.
E.
Starting System shall be 12-V electric, with negative ground for units up to 250 kW. Above 250
kW, system shall be 24-V.
1.
Units 1000 kW and above: provide dual cranking motors, battery banks and chargers for
reliability.
F.
Fuel Oil System: Comply with UL 142, NFPA 30 and NFPA 37, and provide the following
features:
1.
For each generator set specify a sub-base day tank of eight (8) hours fuel supply at 100%
load, not to exceed 660 gallons for indoor installations.
a.
Provide direct fuel oil supply and return piping between the day tank and on-site
storage tank.
b.
If so dictated by critical project needs, provide a remote fuel fill station to
replenish the day tank directly from a fuel truck/trailer.
2.
On-Site Storage Tank Capacity: As recommended by engine manufacturer for an
uninterrupted period of minimum 96 hours' operation at 100 percent of rated power
output of engine-generator system without being refilled.
3.
Single generator installations of 500 kW or less (except for healthcare or data center
facilities) may have only a sub-base main fuel tank with minimum capacity of 24 hours at
100% load, or as determined by project requirements.
4.
If oil fired boilers are specified, fuel oil piping for the generator system shall not be
connected into the boiler transfer fuel delivery loop.
5.
Main storage tank to day tank pumps shall be duplex arrangement. Provide a manually
operated transfer pump connected in parallel with electric pumps to allow oil to be
pumped to day tank in event the electric driven pumps are in-operable.
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENGINE-GENERATOR SYSTEMS
2.3
CONTROL AND MONITORING
A.
Indicating and Protective Devices and Controls: As required by NFPA 110 for Level 1 system.
B.
Generators shall be provided with Communications capabilities: A communication gateway,
discrete I/O module, for each alarm and status indication for data-link transmission of
indications to remote data terminals and control network. Generator shall be capable of
communicating with Cleveland Clinic’s data collection and control network.
C.
Remote Alarm Annunciators shall comply with NFPA 99 and be installed in a location where it
can be monitored 24 hours /day, such as the Security office or Building Manager’s office.
2.4
GENERATOR OVERCURRENT AND FAULT PROTECTION
A.
Generator Circuit Breaker: Molded case (up to 800 A.) or insulated-case (above 800 A),
electronic-trip type; 100 percent rated; complying with UL 489.
B.
Ground-Fault Indication shall be provided per NFPA 70, "Emergency System" signals for
ground-fault.
2.5
GENERATOR LOAD BANK
A.
2.6
Generator installations shall be designed with provisions for a portable load bank connection.
1.
A circuit breaker rated at 100% of generator output shall be provided in the Generator
paralleling switchgear or generator distribution switchboard and wired to a roll up
termination cabinet similar to an (Eaton) Cutler-Hammer type “RUGTC”. This cabinet
shall be typically located outdoors. Refer to Specification 262417.
2.
This connection may also be used to provide temporary generator connection to building
load in event of installed generator failure.
OUTDOOR ENCLOSURES
A.
Where provided, specify vandal-resistant, weatherproof, walk-in type, steel housing, wind
resistant up to 100 mph (160 km/h). All instruments and controls shall be mounted within
enclosure. Specify an acoustical rating of Level 2 (75dBa @ 23 feet).
1.
Mufflers shall be located within the enclosure.
2.
Walk-in enclosures shall be provided with a factory installed and wired 208/120V
loadcenter with sufficient breakers to power all required auxiliary equipment.
3.
Where non-walk-in enclosures are specified, an elevated work platform extending around
the entire enclosure shall be provided to permit total access to all generator components.
APRIL 2012
Page - 4
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
ENGINE-GENERATOR SYSTEMS
PART 3 - EXECUTION
3.1
INSTALLATION
A.
Emergency Generator installations shall comply with NFPA 99 and 110, FM Global, and NEC
70E.
B.
Preferably emergency generators shall be installed indoors on the ground floor, above the 100
year floodplain, in a locked dedicated room with adequate ventilation and access to at least one
outside wall. Locate away from occupied spaces. Provide reinforced concrete housekeeping
pads for generator equipment. Walls should preferably be CMU and extended from floor to
structural deck. Fire rating of walls and doors shall be determined by the Fire Protection
Engineer.
1.
Generators should be installed at least 100 feet from communications frame equipment to
avoid RF interference. Coordinate with Cleveland Clinic ITD staff.
C.
Route exhaust piping to avoid re-entraining exhaust gases into building or adjoining building(s)
ventilation systems.
D.
Outdoor installations shall be reviewed and approved by the Cleveland Clinic Facilities Group.
E.
Outdoor installations shall be within a locked masonry enclosure, with adequate working
clearance around the entire generator housing. Provide raised reinforced concrete housekeeping
pads. Security lighting and convenience power shall be provided.
F.
Coordinate location, design and specification of remote fuel oil storage, piping, and pumping
systems with Mechanical Engineer and Division 23 Sections.
3.2
TESTING AND ACCEPTANCE
A.
Refer to Division 26 Section 263213 "Engine Generators" for requirements.
*****
APRIL 2012
Page - 5
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
CENTRAL BATTERY EQUIPMENT
PART I - GENERAL
1.1
A.
SUMMARY
This Guideline provides the general requirements for Central Battery Equipment (CBE) used for
emergency lighting systems. Refer to Specification 263323 for detailed requirements. For
Uninterruptible Power Supplies see Section 263353 Uninterruptible Power Supplies (UPS).
1.2
A.
DESIGN REQUIREMENTS FOR CENTRAL BATTERY SYSTEMS
Where the use of an emergency generator cannot be financially justified to provide power for
emergency/egress lighting, consideration shall be given to the use of a Central Battery Inverter
System. Application would typically be for stand alone Administrative /Support facilities.
1.
Critical care areas in hospital or acute healthcare facilities (i.e. operating suites, LDR’s)
that cannot tolerate loss of illumination shall be considered for use of a CBE to back up
the room illumination provided by selected fixtures. This should be coordinated during
the initial design phase.
B.
Provide Slow-Transfer Central Battery Inverters that will automatically sense loss of normal ac
supply and use an electromechanical switch to transfer loads. The unit should automatically
transfer load from normal source to internal battery/inverter source in one second or less.
C.
Inverters shall be solid-state type sized to carry 125% of the connected load for 10 minutes.
D.
Inverters shall be compatible with all fixture types. Fixture types include, but are not limited to,
fluorescent ballasts, incandescent lamps, electronic and high power factor fluorescent ballasts,
LED, and HID fixtures.
E.
Batteries shall be Valve regulated, sealed lead calcium, maintenance free batteries capable of
sustaining full-capacity output for a minimum of 90 minutes. Ni-Cad batteries shall not be
specified.
F.
Distribution to emergency circuits should be through panelboards complying with Section
262416, except they can be integral to the equipment cabinet.
PART 2 - PRODUCTS
2.1
A.
MANUFACTURERS:
Acceptable manufacturers are provided in Specification Section 263323.
APRIL 2012
Page 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
CENTRAL BATTERY EQUIPMENT
PART 3 - EXECUTION
3.1
REQUIREMENTS FOR ELECTRICAL INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Equipment shall be installed in a locked room dedicated for electrical equipment. Ensure
adequate clearance around all equipment as well as sufficient ventilation.
C.
Testing and acceptance requirements: refer to Specification Section 263323.
*****
APRIL 2012
Page 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
UNINTERRUPTIBLE POWER SUPPLY
PART 1 - GENERAL
1.1
SUMMARY
A.
1.2
This Guideline provides the general requirements for modular Uninterruptible Power Supplies
(UPS) 10 kVA and larger. Refer to Specification Section 263353 for detailed requirements.
GENERAL REQUIREMENTS
A.
The equipment described herein will generally include free standing, modular type UPS
systems. These are typically provided in facility MDF rooms, server or IT equipment rooms.
B.
UPS includes the following components:
1.
Three-phase, on-line, double-conversion, static-type, UPS units with:
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
1.3
Surge suppression on input.
Input circuit breaker.
Rectifier-charger.
Inverter.
Static bypass transfer switch.
Battery Cabinet and battery disconnect device.
Maintenance bypass/isolation switches cabinet.
Output circuit breaker (depending on project requirements).
Output step down transformer (depending on project requirements).
Output distribution panelboard (depending on project requirements).
Remote UPS monitoring provisions.
Battery monitoring.
PERFORMANCE REQUIREMENTS
A.
Minimum Duration of Supply: If battery is sole energy source supplying rated full UPS load
current at 80 percent power factor, duration of supply shall be a minimum of 10 minutes.
1.
1.4
Coordinate exact requirements with the Cleveland Clinic ITD Department.
POWER SOURCE
A.
Typically the UPS(s) shall receive power from a dedicated Closed Transition Transfer Switch
fed from the facility emergency generator. The Maintenance Bypass source shall be a feeder
from the Critical Branch transfer switch.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
UNINTERRUPTIBLE POWER SUPPLY
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
2.2
Acceptable manufacturers are provided in Specification Section 263353.
BATTERY
A.
2.3
Batteries shall be valve-regulated, recombinant, lead-calcium units factory assembled in an
isolated cabinet with battery disconnect switch.
CONTROLS
A.
2.4
An “Emergency Power Off” Switch shall be provided in the room at the door to shut off all
power to the UPS(s).
MONITORING BY REMOTE COMPUTER
A.
2.5
A “Liebert Site Scan” communication module shall be specified for capability of remote
monitoring of UPS(s). The remote computer and the connecting signal wiring are not included
in this Section. Include the following features:
1.
Software and Hardware: Compatible with that specified in Division 26 Section
"Electrical Power Monitoring and Control."
BASIC BATTERY MONITORING
A.
Battery monitoring shall be specified, the Albercorp system shall be used.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
3.2
UPS shall be located in locked, dedicated, climate controlled rooms, or in the main server or
distribution frame room. Location shall be coordinated with the Cleveland Clinic ITD group.
PERFORMANCE TESTING
A.
Performance and acceptance testing shall be in accordance with Section 263353 requirements.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
TRANSFER SWITCHES
PART 1 - GENERAL
1.1
SUMMARY
A.
This Guideline provides requirements for automatic transfer switches rated 600 V and less,
including the following:
1.
2.
3.
Automatic Transfer Switches (ATS).
Closed Transition Transfer Switches (CTTS).
Bypass/isolation switches.
B.
Refer to Specification Section 263600 for detailed requirements.
C.
Related Specification Sections:
1.
Section 263213 - Engine Generators.
2.
Section 260913 - Electrical Power Monitoring and Control.
1.2
TRANSFER SWITCH REQUIREMENTS
A.
Provide transfer switches for loads connected the emergency power systems as defined in
NFPA 70 for critical, life safety, equipment and delayed equipment branches.
B.
Consideration shall be given to the quantity of transfer switches and respective loads to allow
for load shedding in circumstances of emergency power system diminished capacity.
C.
In general, it is desired that transfer switches be limited to 800 amperes maximum size and
located to provide the highest practicable reliability in service to the load.
D.
Switches provided for the Equipment Branch may be larger than 800 amps when serving a
single equipment load (i.e. Chiller).
E.
UPS equipment for IT loads shall be served by a dedicated CTTS when required by the
Cleveland Clinic ITD Department. Engineer to verify.
F.
For three phase four wire systems, switches shall be true four pole switches, with all four poles
mounted on a common shaft.
G.
Transfer switch control panels shall be provided with communications package to allow real
time monitoring. Transfer switches shall be monitored via the electrical power monitoring and
control system (Section 260913). Ethernet communications shall be MODBUS protocol and use
Cleveland Clinic’s energy management software.
H.
Switching Arrangement: Single motor for Life Safety and Critical Branch switches, dual motor
for delayed Equipment Branch switches, and Closed Transition for UPS loads or other loads
that automatically reboot after restoration of power.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
TRANSFER SWITCHES
1.
I.
1.3
Depending upon project requirements, Closed Transition switches shall be considered for
critical imaging, Cath labs, and MRI installations.
Bypass/isolation switches: Provide a bypass/isolation switch to electrically bypass and isolate
each ATS or CTTS. The switch must be capable of bypassing to whichever source the
ATS/CTTS is connected to.
QUALITY ASSURANCE
A.
Comply with NEMA ICS 1.
B.
Comply with NFPA 70.
C.
Comply with NFPA 99.
D.
Comply with NFPA 110 Level 1 requirements.
E.
Comply with UL 1008.
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
Acceptable manufacturers are provided in Specification Section 263600.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
Comply with current edition in effect of the National Electrical Code.
B.
Generally, transfer switches shall be located in an electrical room dedicated for emergency
system equipment.
1.
Install on 4 inch high concrete base with chamfered edges, front edge shall be painted
yellow.
C.
All equipment shall be grounded in accordance with Specification Section 260526.
D.
Components shall be identified according to Specification Section 260553.
E.
Tests and inspections shall be in accordance with Specification Section 263600.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LIGHTNING PROTECTION FOR STRUCTURES
PART 1 - GENERAL
1.1
SUMMARY
A.
1.2
This Guideline includes lightning protection for new structures. Refer to Specification Section
264113 for detailed requirements.
GENERAL REQUIREMENTS
A.
Early in the design phase of a new building, if the structure will be taller than surrounding
buildings and structures, the Engineer shall provide a Lightning Risk Analysis in accordance
with NFPA 780. The Project Team will review the Risk Analysis and determine if a lightning
protection system should be provided.
B.
If it is determined that a lightning protection system should be provided, provide a traditional
Franklin type of system in accordance with the appropriate chapter of NFPA 780.
C.
If it is decided a lightning protection system is not required, this decision shall documented and
made a matter of record along with the Risk Analysis.
1.3
QUALITY ASSURANCE
A.
Applicable Codes and Standards:
1.
2.
3.
4.
UL 96A.
NFPA 780.
NFPA 70.
FM Global Data Sheets.
COORDINATION
1.4
A.
Coordinate design of lightning protection with other building systems and components,
including electrical wiring, supporting structures and building materials, metal bodies requiring
bonding to lightning protection components, roofing, and building finishes.
PART 2 - PRODUCTS
2.1
LIGHTNING PROTECTION SYSTEM COMPONENTS
A.
Specify products that comply with UL 96 and NFPA 780.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
LIGHTNING PROTECTION FOR STRUCTURES
PART 3 - EXECUTION
3.1
INSTALLATION
A.
At the completion of the Project the Engineer shall insure a UL Master Label certificate is
delivered to Cleveland Clinic.
*****
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SURGE PROTECTIVE DEVICES FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITS
PART 1 - GENERAL
1.1
SUMMARY
A.
Section includes requirements for Surge Protective Devices (SPD) for low-voltage (120 to
600 V) power distribution equipment. See Specification Section 264313 for detailed
requirements.
B.
The latest edition of UL 1449 has eliminated “Transient Voltage Surge Suppressors” and
replaced them with “Surge Suppression Devices”. The new standard categories are as follows:
1.
Service Entrance: Old: Class B – new: Type 1.
2.
Sub-distribution Switchboards and Panelboards: Old: Class C – new: Type 2.
C.
Related Sections:
1.
2.
1.2
Division 26 Section 264113 "Lightning Protection for Structures".
Division 26 Section 260526 "Grounding and Bonding".
DEFINITIONS
A.
SPD: Surge Protective Device.
B.
TVSS: Transient voltage surge suppressor(s).
1.3
GENERAL REQUIREMENTS
A.
SPD’s offer protection against either externally induced surges caused by lightning or
utility switching, or internally generate switching surges caused by starting/stopping of
compressors, air conditioners, elevators or fuse/circuit breaker operations.
B.
Surge Protective Devices shall be provided at service entrance equipment of all facilities.
C.
Use of integrated, cascaded SPD is required at all acute care and data processing facilities, at the
highest secondary voltage (“service entrance”) level, at downstream panelboards that serve
sensitive electronic equipment, and for other critical branch and life safety loads.
D.
Surge Protective Devices installation shall be coordinated with lightning protection system in
buildings so equipped.
E.
SPD’s shall use heavy duty MOV technology and serviceable, replaceable modules.
F.
Surge current capability per phase shall be:
April 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SURGE PROTECTIVE DEVICES FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITS
Service Entrance or Transfer Switch
1.
2.
1.4
300 kA
Type 1
Distribution Panelboards and MCC’s 200 kA
Type 2
Branch Circuit Panelboards
Type 2
100 kA
For facilities in areas of high lightning incidence, increase ratings to 400 kA, 250 kA, and
120 kA respectively.
The SPD shall provide surge current paths for all modes; L – N, L – G, and N – G.
QUALITY ASSURANCE
A.
Surge Protective Devices shall comply with the following:
1.
Comply with IEEE C62.41.2 and test devices according to IEEE C62.45.
2.
Comply with UL 1449, 3rd edition.
3.
Comply with NFPA 70.
PART 2 - PRODUCTS
2.1
MANUFACTURERS:
A.
Acceptable manufacturers are provided in Specification Section 264313.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
SPD devices shall be specified at service entrance LV Switchgear on line side of the main
device, with ground lead bonded to service entrance ground.
1.
SPD devices shall be internally mounted in switchgear in a barriered compartment.
2.
A dedicated, separately mounted disconnect device shall be provided in the switchgear
for the SPD.
B.
SPD devices for Switchboards, Distribution panelboards and Branch circuit panelboards shall
be specified with conductors or buses between suppressor and points of attachment as short and
straight as possible. The neutral and ground shall not be bonded.
1.
SPD devices shall be externally mounted for switchboards, distribution and branch circuit
panelboards.
April 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
SURGE PROTECTIVE DEVICES FOR LOW-VOLTAGE ELECTRICAL POWER CIRCUITS
2.
Insure sufficient wall space for mounting of SPD immediately adjacent to panelboard to
minimize lead lengths.
3.
A dedicated disconnect device shall be specified for the SPD.
C.
Coordinate the location of field-mounted SPD devices to allow adequate clearances for
maintenance.
D.
Tests and Inspections:
1.
Refer to Specification Section 264313 for testing and acceptance requirements.
*****
April 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
INTERIOR LIGHTING
PART I - GENERAL
1.1
A.
1.2
A.
SUMMARY
This Section specifies the general requirements for Interior Lighting. This is a design standard
and is not to be used as a Specification. Refer to Specification 265100 for detailed
requirements.
GENERAL REQUIREMENTS FOR INTERIOR LIGHTING
Interior Lighting
1.
Perform all lighting calculations based on IES Lighting Handbook Latest Edition and the
lighting power density criteria of the latest edition of ANSI/ASHRAE/IESNA 90.1.
Calculations shall be performed with industry leading software; Visual, AGI, etc.
2.
Refer to IESNA Recommended Practice (RP-29-6) for further Healthcare Lighting
criteria.
3.
Provide individual luminaire details in a Luminaire Schedule on the Drawings and not as
part of the Specification.
4.
Show switch and switchleg control for all luminaires.
5.
Luminaires powered by the Life Safety Branch in corridors, stairwells and exit signs shall
be connected to an unswitched circuit.
6.
Emergency paths of egress shall be illuminated at a minimum of one (1) foot candle. Ten
(10) footcandles at exit discharge. Engineer to provide calculations identifying required
illumination along all paths of egress.
7.
Incandescent lamps including halogen types shall not be used unless approval has been
obtained from CCF Facilities Engineering Department.
8.
Linear and compact fluorescent dimming is acceptable.
9.
Provide occupancy sensors and/or low voltage master lighting control system to comply
with latest edition of ANSI/ASHRAE/IESNA 90.1 requirements as conditions warrant.
10. Luminaires in equipment rooms, telecommunication rooms and utility rooms shall be
mounted such that the luminaire bottom is not less that 8’-6” above finished floor. Wire
guards shall be specified. Coordinate final location with equipment layout.
11. Equipment rooms, telecommunication rooms and mechanical rooms shall have at least
one (1) overhead light on emergency power. When only two (2) luminaires are in a
room, both may be on one switch on emergency power. Elevator machine room lighting
shall be on a dedicated circuit.
12. Lensed fluorescent luminaires shall have 0.125” thick acrylic lens material.
13. Undercabinet and systems furniture task lights shall be 120 volt, LED type, solid front
with integral occupancy sensor(s).
14. All linear luminaires shall have T8 or T5 high performance lamps up to 4’ in length only
and electronic ballasts. Lamps shall be standardized for respective project.
15. Fluorescent 2’x4’ luminaires shall be the standard. 2’x2’ luminaires will be LED type
with evenly lighted diffuse panel and no visible LED modules.
16. Electronic ballasts shall be high power factor (.90 minimum), have a total harmonic
distortion of <10% and have a crest factor less than 1.7 so as not to depreciate lumen
output and lamp life.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
INTERIOR LIGHTING
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
APRIL 2012
Fluorescent luminaires shall be provided with internal fusing for ballasts. This shall be in
addition to the thermal fuses integral to the ballasts.
Fluorescent luminaires with linear lamps shall be provided with ballast disconnecting
means per NEC. In areas of renovation, existing fluorescent luminaires to remain shall
be provided with ballasts disconnects for each ballast.
Existing interior incandescent downlights shall be re-lamped with LED replacement
lamps or Edison based self ballasted compact fluorescent lamps as a value engineering
option.
New interior downlights shall be compact fluorescent type, vertical lamp unless ceiling
restrictions dictate otherwise. LED downlights shall be considered and proposed to CCF
Facilities Engineering Department for acceptance.
Downlight reflectors shall be clear alzak with integral white trim ring unless noted
otherwise.
Recessed fluorescent downlights shall have open reflectors with 7” minimum diameter
aperture.
Downlights installed outdoors or over food handling areas shall be lensed.
Downlights installed in shower locations shall be provided with flush type reflector with
opal lens.
Parabolic luminaires shall have low iridescent diffuse silver finish with 3” deep 18 cell
louvers. 2’x’4 parabolic luminaires shall have two (2) ballast covers.
Luminaire frames shall be flush or regressed aluminum, steel hinged and equipped with
spring loaded cam latches.
Clean room type luminaires shall be provided in specific areas as required and shall be
triple gasketed with sealed cam latches.
Warning signs (In-Use, Beam-On, X-Ray In Use, etc.) shall be LED type with housing
and face color as specified or electroluminescent.
Luminaires in Operating rooms, Pre and Post Op, ICU, CCU, PCU, NICU and other
similar Critical Care Areas and other areas where electronic equipment is used that is
sensitive to RF interference, as determined by the CCF Facilities Engineering Department
shall be provided with an RFI shielded lens and an RFI suppressor for each ballast.
Surgical troffers in Operating rooms shall have closed cell neoprene gasket with
antimicrobial finish, with a high CRI and match the color temperature of adjacent
sources. Luminaires shall be equipped with .156” asymmetric-symmetric lens to diffuse
the light and to prevent glare. Door shall have captive screws. Luminaire shall be
provided with three (3), two (2) lamp electronic Class P ballasts for multi-level control.
Operating Rooms, Procedure Rooms, etc., shall have supplemental recessed downlighting
around perimeter of room controlled separately from surgical troffers.
Careful consideration shall be given when selecting luminaires. Proper lamp/ballast
combinations shall be provided to meet the allowed lighting power density (LPD) noted
in ASHRAE 90.1-2007. Engineer shall decide if the “space-by-space” or “whole
building” method should be utilized.
MRI suites shall have 0-10VDC LED dimmable 6” aperture downlights, 4100ºK with
1,050 lumen package minimum, non-ferrous mounting bracket, integral thermal
management and remote LED driver. Maximum depth 8”. All lighting in MRI suites
shall be thoroughly coordinated with obstructions above ceiling to avoid conflict.
Luminaires shall be wired as parallel lamp circuits to maintain full light output on
surviving lamps if one or more lamps fail.
Fluorescent lamps and ballasts shall be recycled per EPA approved methods.
All fluorescent lamps for use on dimming circuits shall be burned in for 100 hours
minimum.
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
INTERIOR LIGHTING
37.
38.
Luminaires in daylight areas shall be on at all times. When adequate daylight is present,
luminaires shall dim down to 10% minimum output.
Luminaires shall be fully accessible for relamping and servicing from below ceiling
plane.
B.
Exit Signs
1.
Provide exit signs in accordance with NFPA 101, Life Safety Code.
2.
Indicate quantity of faces and directional arrows on the Drawings, where required.
3.
Exit signs shall be provided push to test switch or self diagnostics where available.
4.
Exit signs shall be green electroluminescent edge-lit type with mirror finish in new or
renovated areas. New supplemental exit signs in existing areas to remain shall match
adjacent signs. If LED exit signs are utilized, individual LED’s shall not be visible. Red
and green shall not be mixed in the same areas.
5.
Exit signs shall meet NEMA EM 1-2010, Exit Sign Visibility Testing Requirements.
C.
Interstitial Spaces
1.
Provide fluorescent industrial strip luminaires with open top reflectors providing 20%
uplight. Provide with wire guard where subject to physical damage.
D.
LEED Goals
1.
All projects shall be designed to attain LEED certification. Certification level goals shall
be coordinated with CCF Facilities Engineering Department at the beginning of each
Project.
2.
For Interior Lighting, at a minimum, Indoor Environmental Quality Credit 6.1 (EQ 6.1)
Controllability of Systems - Lighting shall be addressed.
E.
Deviation
1.
Whenever deviations from Cleveland Clinic Standards and/or Design Guidelines may be
required, the Engineer shall submit a “Guideline Revision Request Form” applicable to
that specific Project fully describing the requested deviation.
2.
Request approval from CCF Facilities Engineering Department for the implementation of
any new or improved Interior Lighting products and/or systems that are energy efficient
or result in cost savings through submission of a “Guideline Revision Request Form”.
PART 2 - PRODUCTS
A.
MANUFACTURERS: Refer to “Cleveland Clinic Master Lighting Fixture Schedule” for
acceptable manufacturers.
B.
Fluorescent lamps shall have a color temperature of 3000ºK in public spaces. Four foot T8
lamps shall be 25 watt high efficiency type with mercury content 1.7mg or less. Philips
F25T8/ADV835/ALTO or equal be GE shall be the standard lamp. Other Color temperatures
shall not be used unless approval has been obtained from CCF. All Clinical spaces, i.e., CCF
Operating Rooms and adjacent support areas, such as, Pre and Post OP, Sub Sterile Rooms,
Clean Storage Rooms, Corridors and Nursing Stations shall utilize 4100°K. Kelvin
temperatures shall not be mixed within the same visible area.
APRIL 2012
Page - 3
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
INTERIOR LIGHTING
C.
Standard metal halide lamp color shall be 3500ºK. When providing metal halide luminaires at
interior locations, Engineer shall select a lamp with a color temperature of 3200ºK. Verify
selection with CCF Facilities Engineering Department prior to specifying.
D.
Standard fluorescent luminaire for general lighting applications shall be 2’x4’ lay-in type with
three (3) T8 lamps and electronic ballast(s). Ballast quantity as required by switching
arrangement.
E.
2’x2’ fluorescent luminaires shall not be specified unless approval has been obtained from CCF
Facilities Engineering Department.
F.
Compact fluorescent lamps shall be 3000ºK, triple tube, 4 pin.
replacement applications.
G.
Eight (8) foot lamps are not acceptable.
H.
High and Low pressure sodium or mercury vapor lamps are not acceptable.
I.
Lamps shall have a minimum CRI of 85 with 90 of higher preferred.
J.
Metal halide lamps shall be mogul or medium base. Specialty metal halide lamps may be PAR
type with medium base.
K.
Two, three and four foot linear lamps, compact fluorescent lamps and HID lamps shall be TCLP
compliant with mercury content of 1.7mg or less.
Edison base type for
PART 3 - EXECUTION
3.1
A.
REQUIREMENTS FOR INTERIOR LIGHTING INSTALLATION
Comply with the edition in effect of the National Electrical Code and all applicable federal,
state and local requirements, referenced standards and conform to codes and ordinances of
Authorities Having Jurisdiction.
*****
APRIL 2012
Page - 4
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
EXTERIOR LIGHTING
PART I - GENERAL
1.1
A.
1.2
A.
SUMMARY
This Section specifies the general requirements for Exterior Lighting. This is a design standard
and is not to be used as a Specification. Refer to Master Specification 265600 for detailed
requirements.
GENERAL REQUIREMENTS FOR EXTERIOR LIGHTING
Exterior Lighting
1.
Perform all lighting calculations based on IES Lighting Handbook Latest Edition and the
lighting power density criteria of the latest edition of ANSI/ASHRAE/IESNA 90.1.
Calculations shall be performed with industry leading software; Visual, AGI, etc.
2.
Area site lighting shall comply with the Commercial Building Energy Alliances (CBEA)
high efficiency LED parking lot performance specifications.
3.
Provide individual luminaire details in a Luminaire Schedule on the Drawings and not as
part of the Specification.
4.
Site lighting poles shall be anodized or polyester powder coated aluminum. Color and
shape of poles shall be coordinated with CCF Facilities Engineering Department and
Architect. Height as required for specific application.
5.
In areas where high, uneven winds may cause wind induced vibrations in poles, consider
use of internally mounted, vibration mitigation devices.
6.
Luminaires shall be (Metal Halide) (LED). (3500º/4100º Kelvin). IP-66 rated.
7.
Illuminate large parking lots with pole mounted full cut-off luminaires, utilizing alternate
circuiting. High wattage pole or building mounted luminaires are discouraged. The
maximum height of a pole shall be a minimum of 12 feet, not to exceed 30 feet.
Coordinate locations with snow removal means, hardscape and landscape features, etc. A
combination of exterior wall mounted and pole mounted luminaires may be used for
illumination of small parking lots.
8.
Provide minimum maintained illumination levels for pedestrian pathways, vehicle routes,
parking lots, way finding, signage, pedestrian entrances and building surrounds and
services which will provide safety and security.
9.
Preferred pole locations are islands and landscaped areas beyond the reach of vehicle
bumpers. When not practical, extend concrete base 30” above finished grade. Refer to
standard pole base detail.
10. Automatic controls shall be capable of turning off exterior lighting when sufficient
daylight is available or when the lighting is not required during night time hours.
Lighting not designated for dusk-to-dawn operation shall be controlled by an
astronomical time clock or relay system.
11. Refer to ASHRAE 90.1 Building Exterior Lighting Power Density Table for further
information.
12. For security facilitate facial recognition through vertical illumination and careful
selection of color temperature and CRI of light sources.
13. Control light distribution to prevent direct glare to motorists, pedestrians and occupants
of adjacent buildings, light pollution and light trespass.
APRIL 2012
Page - 1
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
EXTERIOR LIGHTING
14.
15.
16.
17.
18.
Locate luminaires to emphasize specific building components and site features, i.e.,
entrances, columns, pedestrian/vehicular gateways, etc. Locate luminaires symmetrically
at building entrances. Maintain symmetrical pattern along walkways.
Provide dual source illumination at exterior exit discharge where necessary to meet Life
Safety Code requirements.
Exterior lighting shall be controlled by a Building Automation System (BAS). Provide
local control only if BAS control is not available. Do not provide time clock or an
individual photocell in each light unless approved by CCF Facilities Engineering
Department.
Stub out a spare 1 1/4" conduit from every fourth pole base for new poles and at every
corner or intersection for expansion of lighting circuit in the future.
Avoid locating in ground junction boxes in sidewalks or driveways. Conceal them when
possible in landscaping.
B.
Parking garage lighting shall be LED, mounting configuration as necessary on a site by site
basis. Top level and perimeter luminaires shall be controlled via photocell, all other luminaires
shall be controlled via a switching relay panel.
C.
Existing Sites
1.
At existing sites, new poles, luminaires and lamp sources shall match existing exterior
luminaires. If existing luminaires cannot be matched, provide details, manufacturers
name and catalog number for review by CCF Facilities Engineering Department.
D.
Obstruction Lighting
1.
Where required, refer to obstruction lighting advisory per Federal Aviation
Administration (FAA) Advisory Circular AC 70/7460-1K, Obstruction Marking and
Lighting, latest edition. This is an advisory only and does not establish required
practices.
E.
Helipads
1.
Refer to helipad lighting advisory per FAA Advisory Circular 150/5390-2B. This is an
advisory only and does not establish required practices. Flush or semi-flush LED marker
lights shall not be utilized.
F.
Deviations
1.
Whenever deviations from Cleveland Clinic Standards and/or Design Guidelines may be
required, the Engineer shall submit a “Guideline Revision Request Form” applicable to
that specific Project fully describing the requested deviation.
2.
Request approval from CCF Facilities Engineering Department for the implementation of
any new or improved Exterior Lighting products and/or systems that are energy efficient
or result in cost savings through submission of a “Guideline Revision Request Form”.
G.
LED Backlight/Uplight/Glare (BUG) Ratings.
1.
If LED site luminaires are proposed, luminaires shall be rated with IES technical
memorandum TM-15-07.
H.
LEED Goals
APRIL 2012
Page - 2
Cleveland Clinic Design Standards
ELECTRICAL DESIGN GUIDELINES
EXTERIOR LIGHTING
1.
All projects shall be designed to attain LEED certification. Certification level goals shall
be coordinated with CCF Facilities Engineering Department at the beginning of each
Project.
For Exterior Lighting, at a minimum, Sustainable Sites Credit 8 (SS 8) Light Pollution
Reduction shall be addressed.
2.
PART 2 - PRODUCTS
A.
MANUFACTURERS: Refer to “Cleveland Clinic Master Lighting Fixture Schedule” for
acceptable manufacturers.
B.
HID ballasts shall be electronic type, -30ºC starting, constant discharge (HID) wattage
autotransformer, fused 120,208,277 or 480 volt input as required by application. Match ANSI
ballast type to lamp specified. Potted magnetic ballasts are not acceptable.
C.
LED drivers shall be 120, 277 or 480 volt input, -40ºC starting, UL listed for application.
350mA.
D.
LED’s shall be tested and approved under the approved methods LM-79 and LM-80.
PART 3 - EXECUTION
3.1
A.
REQUIREMENTS FOR EXTERIOR LIGHTING INSTALLATION
Comply with the edition in effect of the National Electrical Code and all applicable federal,
state and local requirements, referenced standards and conform to codes and ordinances of
Authorities Having Jurisdiction.
*****
APRIL 2012
Page - 3