CITY OF EDGEWATER
FIRE STATION 55
50% CONSTRUCTION DOCUMENTS
June 14, 2010
SECTION 16400 - ELECTRICAL DISTRIBUTION EQUIPMENT
PART 1 - GENERAL
1.1
RELATED DOCUMENTS:
The general provisions of the Contract and the requirements of Section 16050
apply to the Work specified in this Section.
1.2
SUMMARY:
Provide all electrical distribution and motor control equipment and accessories
required to distribute electrical power to all motors, outlets and systems requiring
power.
1.3
QUALITY ASSURANCE:
A.
New: Provide all new equipment.
B.
Single Manufacturer: All equipment of each type shall be the product of one
manufacturer.
C.
UL: Equipment shall be UL listed. Service entrance equipment shall bear UL
Service Entrance label.
D.
NEC: Equipment and installation shall comply with the National Electrical Code.
E.
Wet Locations: Equipment and enclosures installed outdoors and in wet locations
shall be approved for the purpose.
F.
IEEE: Institute of Electrical and Electronics Engineers Standard 1015-1997 (Blue
Book) Recommended Practice for Applying Low-Voltage Circuit Breakers Used
in Industrial and Commercial Power Systems.
1.4 LABELING:
1.5
A.
Nameplates and labeling shall be provided in accordance with Article LABELING
in Section 16050. All feeders shall be labeled at the feeder device.
B.
Field Marking for Arc Flash Hazard: Apply field marking to switchboards,
panelboards, industrial control panels, and motor control centers to warn
qualified persons of potential electric arc flash hazards. Locate marking as
required by 2002 National Electrical Code Section 110.16 Flash Protection.
FINISHES:
All equipment shall have a factory applied gray finish applied over a rust
inhibiting treatment. Any items which have the finish marred shall be touched up
or refinished to a new condition before final acceptance. This shall include, but
shall not be limited to, sanding and properly removing rust or other contaminants
ELECTRICAL DISTRIBUTION EQUIPMENT
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FIRE STATION 55
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June 14, 2010
and completely repainting equipment if damage is extensive. Overall acceptance
is subject to approval of the Engineer.
1.6
SHORT CIRCUIT CURRENT RATINGS:
A.
General: All switchboards and panelboards shall be fully rated and marked with
a maximum short circuit current rating. The equipment manufacturer shall have
verified this rating with high-amperage testing. All short circuit current ratings are
expressed as amperes RMS symmetrical at the applied voltage unless otherwise
noted. All equipment shall withstand the specified level of fault current. All
overcurrent devices shall interrupt the specified level of fault current.
B.
Ratings: Equipment short circuit ratings shall be fully rated as specified for each
type of equipment or greater rating tabulated in Short Circuit Summary Schedule,
noted on panel schedule or indicated on Drawings. Series ratings shall only be
used where called out for particular equipment on Drawings or Specifications.
PART 2 - PRODUCTS
2.1
2.2
MANUFACTURERS:
A.
General: Square D Company, General Electric Company, Siemens Energy and
Automation,.
B.
Other: Additional or other manufacturers may be furnished for certain equipment
types. Such manufacturers are named in the section of specifications for the
specific equipment. Example: FUSES.
ENCLOSED SWITCHES:
A.
General: Provide heavy duty type enclosed switches similar to Square D Class
3110 Type HD. Switches shall have externally operated handles with provisions
for pad locking in the OFF or ON position.
B.
Where Required: Provide all enclosed disconnect switches indicated on the
drawings. Where a circuit serves a motor, motor controller, fixed electric space
heating unit, or appliance and a local disconnect switch is not indicated on the
drawings, provide a local disconnect unless one or more of the following pertains:
1.
2.
3.
4.
Where the circuit protective device is within sight of, and within 50 feet of
the motor, motor controller, fixed electric space heater, or appliance.
For motors (does not include motor controllers) where the branch circuit
protective device is pad lockable in the OFF position with a padlock and is
located in the same room as the motor.
For appliances that are cord and plug connected.
Where the switch is not required by the National Electrical Code and all
Codes as interpreted by the local authorities.
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FIRE STATION 55
C.
Ratings:
1.
2.
3.
D.
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June 14, 2010
Ampacity: Switches shall be sized large enough for the applied load.
Voltage:
a.
240 Volt ac: Circuits up to 240 Vac.
b.
600 Volt ac: Circuits up to 600 Vac. Note that 600 Vac switch
shall be furnished for 30 and 60 ampere, 240 Vac circuits when
Class J fuses are required.
Short Circuit Withstand:
a.
Fusible: Together with the specified fuses, the fusible switch shall
safely and without failure interrupt short circuits on a system
capable of delivering up to 200,000 RMS amperes symmetrical at
the applied voltage. UL interrupting rating shall be marked on the
switch.
Type:
1.
2.
3.
4.
Fused or non-fusible as required.
All switches shall be UL listed.
All switches 600 amps and smaller shall be horsepower and load-break
rated for the installed motor.
Electrical Interlock: Provide electrical interlock kit when indicated on
Drawings or required for controlling load served by the switch. Interlock
shall have 1 NO/1 NC contact. Control circuit shall break before the
power blades in the switch mechanism. Example: Provide electrical
interlock in local motor disconnect switch for pump or fan motor when the
motor is controlled by a variable speed drive installed remotely ( not in
sight of the motor).
E.
Switch Mechanism: Quick make, quick break, with the operating handle an
integral part of the box, not the cover. Handle shall be suitable for single
padlock LOCK-ON and at least three padlocks LOCK-OFF. Provide handle
accessories as needed to comply.
F.
Fuses: Provide fuses for all fused switches in accordance to Article FUSES
located in this Section.
G.
Enclosures: Provide NEMA 1 for normal indoor installations and NEMA 3R for
installations outdoors and in wet areas. Disconnects at outdoor chillers, pumps
and cooling towers shall be corrosion-resistant type NEMA 4X. Comply with
Code requirements for other environments.
H.
Fuse Clips: All fusible switches shall be provided with Class J fuse clips.
I.
Submittal: Include at least the following:
1.
2.
3.
4.
Manufacturer and Model Numbers
Dimensions
Manufacturer's published data to verify Heavy Duty rating.
Current Ratings
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CITY OF EDGEWATER
FIRE STATION 55
5.
6.
7.
8.
9.
2.3
2.4
50% CONSTRUCTION DOCUMENTS
June 14, 2010
Voltage Ratings
Short Circuit Withstand Ratings
Manufacturer Brochure and Specifications
NEMA enclosure type and material for each switch application
environment.
Lightning arrester.
SINGLE CIRCUIT BREAKERS WITH ENCLOSURES:
A.
General: Provide single circuit breakers with enclosures where required.
B.
Circuit Breaker: Molded case, quick make, quick break, trip free, common
thermal magnetic trip.
C.
Circuit Breaker Ratings: Continuous current, number of poles, and voltages as
required for the application. On 120/208-240 volt systems, 10,000 amps RMS
symmetrical. Provide higher ratings when indicated on the Drawings. Provide a
solid neutral where a neutral is installed.
D.
Enclosures: Provide NEMA 1 for normal indoor installations and NEMA 3R for
installations outdoors and in wet areas. Comply with Code requirements for
other environment.
E.
Nameplate: Provide a nameplate showing load served.
COMBINATION DISCONNECT/MOTOR STARTERS:
A.
General: Enclosed switch/starter and circuit breaker/starter combination units
may be provided in lieu of separate devices in separate enclosures.
B.
Enclosed Switch: As specified under ENCLOSED SWITCHES (to include Class
J Type fuse clips for fusible switches).
C.
Magnetic Controller: As specified under MOTOR CONTROLLERS.
D.
Ratings: Units shall be sized large enough for the applied load. Circuit breakers,
together with the magnetic controller, shall safely and without failure interrupt
short circuits on 120/208-240 volt system capable of delivering up to 10,000 RMS
amperes symmetrical; on 480 volt systems, up to 22,000 RMS amperes
symmetrical. Fused switches, together with the magnetic controller, shall safely
and without failure interrupt short circuits on systems capable of delivering up to
100,000 RMS amperes symmetrical.
E.
Enclosure: Provide NEMA 1 for normal indoor installations and NEMA 4X for
installations outdoors and in wet areas. Comply with Code requirements for
other environments.
F.
Nameplate: Provide a nameplate showing load served.
G.
Manufacturer: Shall be same as MOTOR CONTROLLERS.
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FIRE STATION 55
2.7
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June 14, 2010
FUSES (600 VOLT AND BELOW):
A.
General: Provide fuses in all devices requiring fuses of the types and ampere
ratings required. Fuses shall have the proper voltage rating, coordinated with the
voltage at the point of application. All fuses shall be of the high interrupting
capacity, current limiting type, and be listed and labeled by Underwriters'
Laboratories. All fuses shall be of the same manufacturer.
B.
Types:
1.
2.
3.
4.
Control Transformer: Class CC current-limiting fuses, time delay type.
Fuses shall be similar to Bussmann CC-Tron.
Class J (0-600 Amps): Similar to Bussmann LPJ-SP. Dual element
design for time-delay and current limiting to 200,000 amperes RMS
symmetrical.
600 Amps and Below: Dual-element construction (time-delay and high
interrupting capacity) providing thermal protection for both fuse and
fuseholder. Interrupting rating shall be 200,000 amperes RMS
symmetrical and peak let-thru current and energy let-thru values shall not
exceed the values established by Underwriters' Laboratories Standard for
Class RK-1 fuses. Fuses shall be similar to Bussmann Low-Peak Dual
Element Fuses LPN-RK (250 volts) or LPS-RK (600 volts).
Above 600 Amps: Time delay type; shall hold 500% of rated current for a
minimum of 4 seconds and clear 20 times rated current in .01 seconds or
less. Interrupting ratings shall be 200,000 amperes RMS symmetrical
and peak let-thru current and energy let-thru values shall not exceed the
values established by Underwriters' Laboratories for Class L fuses.
Fuses shall be similar to Bussmann Low-Peak KRP-C.
C.
Installation: Fuses shall be shipped and stored in moisture free packaging and
shall be installed immediately prior to energization of the circuit in which it is
applied. Fuses shall not be factory installed in any equipment, in order to prevent
fuse damage during shipment.
D.
Spares: Spare fuses shall be provided in the amount of 10% of each type and
size installed, but in no case, shall less than three spares of a specific size and
type be supplied. Deliver to the Owner at the time of acceptance of the project,
neatly encased in a properly labeled container. When spare fuse quantity
exceeds thirty, furnish and install one or more Bussmann SFC Spare Fuse
Cabinets, or accepted equivalent. Replacements for fuses and limiters blown
during construction shall not count as spares.
E.
Manufacturer: Cooper Bussmann , Ferraz Shawmut (former Gould Shawmut)
Amp-Trap 2000 Series , Littlefuse.
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CITY OF EDGEWATER
FIRE STATION 55
2.8
50% CONSTRUCTION DOCUMENTS
June 14, 2010
ELECTRICAL PANELS:
A.
General: Circuit breaker type similar to Square D Type NQOD for 120/208-240
volts.
B.
Cabinets:
1.
2.
3.
4.
5.
C.
Circuit Breakers:
1.
2.
3.
4.
D.
Safety dead front type; box made of Code gage galvanized steel;
minimum gutter space 4" on all sides but not less than NEC requirements;
door with flush type combination lock-and-latch, all keyed alike.
Enclosure shall conform to NEMA 1 if located indoors; NEMA 3R if
located outdoors.
Each section of multi-section panels shall have equal-height cabinet.
Surface mounted unless otherwise indicated.
Flush mounted where indicated. Flush panels shall have one 1” empty
conduit per each group of six spares and/or spaces stubbed up to nearest
accessible ceiling cavity.
a.
Provide flush mounted panels in kitchens, other food service
areas, and where noted on Drawings.
General: Provide a breaker for each feeder and branch circuit to protect
wiring and equipment served. Provide a 20A-1 pole breaker for each
lighting and receptacle branch circuit. Circuit breakers shall be UL listed
for the connected load; ex. SWD Switching-duty rated for lighting branch
circuits, HID circuit breakers for fluorescent and HID lighting systems,
HACR for heating, air conditioning and refrigeration equipment.
Description: Breakers shall bolt-in to panel bus bar and be quick make,
quick break, trip free, thermal magnetic trip. Automatic trip shall be
indicated by the handle at the midpoint position. Multiple pole breakers
shall have common trip.
Sub-Feed Breaker: When required circuit breaker exceeds ampacity
available in single/double branch breaker, then provide sub-feed breaker.
Current Limiting Circuit Breakers (CLCB): Breakers shall be molded
case, bolt-in type, quick make, quick break, trip free, common thermal
magnetic trips with automatic tripping indicated by the handle at the
center position. Breakers shall have a minimum AIC rating of 100,000
amperes RMS symmetrical at 208 volts. On high level fault currents, the
circuit breakers shall limit peak current and let-through energy without
fusible elements and provide a voltage transient-free interruption at near
unity power factor. On fault currents below the threshold of limitation, the
circuit breakers shall provide conventional overload protection. Breakers
shall be U.L. listed and marked "current limiting" per UL category DIVQ.
Device shall be similar to Square D I-Limiter Current Limiting Line.
Short Circuit Ratings:
1.
Fully Rated: Circuit breakers, together with the bussing and bracing, shall
safely and without failure withstand and interrupt short circuits as
specified. Series ratings may be furnished .
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CITY OF EDGEWATER
FIRE STATION 55
2.
3.
4.
E.
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June 14, 2010
208Y-240/120 Volt:
a.
10 kaic: Fault current available up to 10,000 amperes RMS
symmetrical.
b.
22 kaic: Fault current available exceeds 10k up to 22,000
amperes RMS symmetrical.
c.
Fault current available exceeds 22k: Provide UL series connected
rating to exceed available RMS symmetrical amperes.
Provide higher ratings when indicated on the drawings.
When panelboard is scheduled to have Series Rating with standard
molded case or current limiting circuit breakers (CLCB) used in upstream
panelboards or switchboards, the combination of fully-rated feeder
breaker and downstream devices having lower interrupting capacities
shall have series connected interrupting ratings recognized by
Underwriters' Laboratories. Combination shall appear in the Recognized
Component Directory under the "Circuit Breakers - Series Connected"
product category DKSY2. The series connected interrupting rating
(combination of upstream and downstream devices) shall be the
scheduled rating necessary to achieve adequate fault current protection
for the downstream panel. Example: Lighting class panelboard served
out of DP and scheduled to have 65 kaic Series Rating.
Phase, Neutral and Ground Bussing:
1.
2.
3.
4.
5.
Silver or tin plated 98% conductivity copper or tin plated aluminum.
Sized in accordance with NEMA Temperature Rise Standards.
Install phase and neutral bussing completely throughout panel for
installation of future breakers where panel schedule shows space only.
Grounding Bus: Provide an equipment grounding bus bonded to the
panel cabinet. Where noted provide isolated grounding bus that is
insulated from the panel can. Ground bus shall have a terminal screw for
every breaker in the panel.
Neutral Bus: 200% neutral in all panelboards served from K-rated
transformers.
F.
Termination: Provide proper incoming line lugs. Size lugs for wire that is to be
installed. Terminate aluminum wire with compression type lugs.
G.
Directory: Complete at end of job, typewritten, contained in a directory frame on
the inside of the panel door. Frame shall have a protective plastic shield. Label
all circuit breakers to match directory. Identify each circuit for Building
Automation System control power. Include the room number and building level
where the circuit junction box is installed for access by the BAS installer.
H.
Nameplate: Nameplate on front face showing panel name and voltage.
Coordinate to give same name as shown on Drawings.
Example:
Panel 1LA
208Y/120 Volts
served from Panel 1HA
ELECTRICAL DISTRIBUTION EQUIPMENT
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CITY OF EDGEWATER
FIRE STATION 55
I.
Submittal: Include at least the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
J.
50% CONSTRUCTION DOCUMENTS
June 14, 2010
Manufacturer and Model Numbers
Dimensions
Cable Termination Provisions
Current Ratings
Voltage Ratings
Short Circuit Ratings including proof of any UL-listed series ratings.
Protective Device Ratings, including catalog pages for all current-limiting
circuit breakers.
Bussing Sizes and Statement of Conductor and Plating Materials
Line drawing detail of grounding bus showing size, terminal screws and
location in panel can.
Original printing (not photocopy) of Manufacturer Brochure and
Specifications
Information on surge protective device internal to panelboard. Refer to
Section 16280 for additional data required for SPD panelboard submittal.
Information about Arc-Fault Circuit-Interrupter breakers. Provide for all
receptacle branch circuits in dwelling unit bedrooms.
Submittal: Include at least the following:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Manufacturer and Model Numbers
Dimensions
Cable Termination Provisions
Current Ratings
Voltage Ratings
Short Circuit Ratings including proof of any UL-listed series ratings.
Protective Device Ratings, including catalog pages for all current-limiting
circuit breakers.
Bussing Sizes and Statement of Conductor and Plating Materials
Line drawing detail of grounding bus showing size, terminal screws and
location in panel can.
Original printing (not photocopy) of Manufacturer Brochure and
Specifications
Include specific catalog data and circuit breaker schedule for each RP
panel on the Essential Distribution System. Show detail of plywood
isolation mounting for designated RP panels. Coordinate submittal to
include Red/Black signal ground box specified in Section 16450.
PART 3 - EXECUTION
3.1
MOUNTING:
A.
General: All equipment shall be securely fastened in place.
B.
Locations: In all cases mounting locations shall comply with the requirements of
the National Electrical Code. This shall include providing suitable working
clearances.
ELECTRICAL DISTRIBUTION EQUIPMENT
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CITY OF EDGEWATER
FIRE STATION 55
C.
3.2
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June 14, 2010
Wall Mounted Equipment: Wall mounted equipment shall be suitably positioned
on the wall. Equipment mounted on exterior basement wall shall have unistrut
channels between the wall and the equipment to prevent condensation problems.
Where wall mounted equipment is specified, but a convenient wall not available,
a suitable unistrut mounting stanchion anchored in concrete shall be provided. In
lieu of this stanchion, small devices may be mounted on to the equipment served
if approved by the equipment manufacturer.
DELIVERY, STORAGE AND HANDLING:
A.
General:
1.
2.
3.
4.
5.
B.
Store all types of electrical power distribution equipment in a clean,
affording appropriate physical protection. Control access to prevent
unauthorized tampering with the equipment. However, equipment may
be stored in other inside or outside environments under approved
conditions.
Inspect equipment when received at Project site for shipping damage.
Report as required by freight carrier to recover repair or replacement
costs from the freight carrier in the event damage was sustained.
Covers are required unless indoor, ventilated storage conditions exist.
Canvas tarpaulins or the equivalent are preferred over other coverings
because they provide better humidity control and enclosure scuff
protection. Where exposed to moisture, covers shall be waterproof.
The manufacturer's shipping skids shall be left on the equipment to
provide structural support until the equipment is set in final resting place.
Refer to Section 16050 for additional requirements. Contractor shall
furnish new equipment to replace any equipment that is exposed to
weather or subjected to other deleterious effects of construction.
Approved Conditions for Equipment Storage:
1.
2.
General: Where storage conditions specified above are not available,
indoor or outdoor storage shall comply with the following.
General Distribution and Utilization Equipment:
a.
Store metal-enclosed equipment in the upright position. Provide
good ventilation of the shelter and protection from dirt, moisture
and physical damage.
b.
Space heaters furnished with the equipment shall be connected to
a continuous source of power of the proper rating. Where space
heaters are supplied from auxiliary power transformers, care shall
be taken that low-voltage heater circuits are properly isolated
before power source connection to prevent inadvertent energizing
of the auxiliary transformer and associated high-voltage primary
wiring.
c.
Ambient conditions may allow condensation inside waterproof
covers. If condensation is occurring, temporary heaters or lamp
banks shall be provided of sufficient wattage to prevent
condensation.
ELECTRICAL DISTRIBUTION EQUIPMENT
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CITY OF EDGEWATER
FIRE STATION 55
d.
3.3
50% CONSTRUCTION DOCUMENTS
June 14, 2010
Contractor shall ensure that equipment stored in shipping cases
receives adequate ventilation to avoid mildew and prevent
condensation.
GROUND FAULT PROTECTION OF EQUIPMENT:
A.
General: Provide for system performance testing as required by the National
Electrical Code. Provide each ground fault relay, sensing device or ground fault
protection system with instructions and a test form. The form shall be retained by
those in charge of the building's electrical installation and be available to the
authority having jurisdiction. The instruction content shall be as required by UL.
Refer to Section titled SPECIAL TESTING for additional requirements.
END OF SECTION 16400
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