SECTION 26 01 20 - GENERAL PROVISIONS
1.
2.
GENERAL
A.
Applicable provisions of the General Conditions, Supplementary General Conditions,
Special Conditions, and Mechanical and Electrical General Conditions shall govern
work performed under this section.
B.
This section supplements all sections of this Division and shall apply to all phases of
work hereinafter specified, shown on the drawings, or required to provide a complete
installation of electrical systems.
1)
WORK INCLUDED. Furnish all labor, material, services and skilled supervision
necessary for the construction, erection, installation, connections, testing, and
adjustment of all circuits and electrical equipment specified herein, or shown or
noted on the drawings, and its delivery to the Owner complete in all respects
ready for use.
2)
COORDINATION OF WORK. Plan all work so that it proceeds with a minimum
of interference with other trades. Inform all parties concerned of openings
required for equipment or conduit required in the building construction for
Electrical work, and provide all special frames, sleeves and anchor bolts as
required. Coordinate the Electrical work with the Mechanical installation. The
Electrical contractor shall review the Mechanical drawings and specifications for
coordination of work. Work lines and established heights shall be in strict
accordance with architectural drawings and specifications insofar as these
drawings and specifications extend. Verify all dimensions shown and establish
all elevations and detailed dimensions not shown. Lay out and coordinate all
work well enough in advance to avoid conflicts or interferences with other work
in progress so that in case of interference the Electrical layout may be altered
to suit the conditions prior to the installation of any work and without additional
cost to the Owner. Conflicts arising from lack of coordination shall be this
contractor's responsibility.
3)
EQUIPMENT AND FIXTURES. Equipment and fixtures shall be connected
providing circuit continuity in accordance with applicable codes, whether or not
each piece of conductor, conduit, or protective device is shown between such
items of equipment or fixtures, and the point of circuit origin.
4)
NEW EQUIPMENT AND MATERIALS. Unless otherwise specified, equipment
and materials of the same type or classification, and used for the same
purpose, shall be products of the same manufacturer. Use only new,
unweathered, and unused material, except as specifically noted.
EXECUTION OF THE WORK
A.
Install equipment and materials in a neat and workmanlike manner and align, level,
and adjust for satisfactory operation. Install equipment so that all parts are easily
accessible for inspection, operation, maintenance and repair.
B.
Provide the design, fabrication, and erection of supplementary structural framing
required for attachment of hangers or other devices supporting electrical equipment.
1)
GENERAL PROVISIONS
Provide members welded to structural members equal to the specification for
the main structural member. Provide "simple beam" type framing with end
connections welded or bolted for shear loads. Use cantilevers only when
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26 01 20-1
detailed or specifically approved by the Engineer. The Engineer's approval is
required for location of supplementary framing.
C.
2)
Design framing members for their actual loads, with allowable stresses
specified by AISC, without excessive deflection and with consideration for
rigidity under vibration, in accordance with standard structural practices.
3)
When supplementary framing is indicated, verify that dimensions are suitable
for the equipment furnished. Provide additional strength when equipment
furnished is heavier than that specified.
OUTLET LOCATION
1)
POSITION OF OUTLETS. Center all outlets with regard to paneling, furring
and trim. Symmetrically arrange outlets in the room. Satisfactorily correct
outlets improperly located or installed. Repair or replace damaged finishes.
Set outlets plumb and extend to the finished surface of the wall, ceiling, or floor
without projecting beyond same. Install symmetrically all receptacles, switches,
and outlets shown on the wood trim, or cases, and where necessary set the
long dimension of the plate horizontal, or ganged in tandem.
2)
MOUNTING HEIGHTS, to center of box above finished floor, shall be as follows
unless otherwise shown or indicated. Other mounting heights are indicated on
the drawings by detail or by a plus dimension shown adjacent to the symbol:
Switches
Convenience outlets and similar devices
Convenience outlets in mechanical rooms
Motor controllers and disconnect switches
Panelboards
Exterior WP convenience outlets
Telephone outlets
Wall telephone outlets
Wall intercom station
Clocks
Television outlets
Doorbell pushbuttons
Nurse call dome light
Nurse call patient station
Nurse call staff and duty station
Nurse call emergency station
Dictation outlet
Fire alarm manual station
Fire alarm chime, bell, and flasher
Doctors entry register
3.
48 inches
18 inches
48 inches
60 inches
to top
72 inches
to top
24 inches
above
grade
18 inches
48 inches
48 inches
84 inches
18-90 inches
48 inches
90 inches
54 inches
54 inches
54 inches
18 inches
48 inches
80 inches
60 inches
SPECIAL CONSIDERATIONS
A.
SEAL EQUIPMENT OR COMPONENTS EXPOSED to the weather and make
watertight and insect-proof. Protect equipment outlets and conduit openings with
temporary plugs or caps at all times that work is not in progress.
B.
NAMEPLATES
GENERAL PROVISIONS
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26 01 20-2
C.
1)
Engraved micarta nameplates shall be provided for all Switchboards, Unit
Substations, Panelboards, Isolation Panels, Telephone Cabinets, Motor Control
Centers, Safety Switches, and individual Motor Control equipment. The
nameplate shall include the equipment name/number, voltage, amperes and
the feeder or the equipment that it feeds. The nameplates shall be bolted or
pop-riveted, not glued on. The nameplates for panelboards shall be mounted
on the front cover above the door
2)
Provide "Dymo Tape" identification for all equipment not covered in 1) above,
which shall include, but not be limited to: Intercom Panels, Visual Paging
System Panels, Nurse Call Panels, Fire Alarm Panels, TV Panels, and Clock
Panels.
SHOP DRAWINGS shall be provided in accordance with the Mechanical and
Electrical General Conditions sections and shall include shop drawings for:
Service Entrance Switchgear
Switchboards
Unit Substation
Engine Generator and Transfer Switches
Panelboards and Safety Switches
High Voltage Cable
Wiring Devices
Lighting Fixtures
Floor Boxes
Isolated Power Supply Equipment
Intercom Systems
Visual Paging System
Nurse Call Systems
Fire Alarm System
Master Clock System
Staff Register System
Motor Control Equipment
Motor Control Centers
Transformers
Elevator Transfer Panel
Film Illuminators
Miscellaneous Alarm Equipment
Provide, as part of the shop drawing submittal, system wiring diagrams for this
installation for: Intercom Systems, Visual Paging Systems, Nurse Call Systems, and
Fire Alarm Systems. Partial or standard wiring diagrams will not be acceptable. The
wiring diagrams shall be for the complete installed system.
D.
RUST PREVENTION. Provide hot dip galvanized components for ferrous materials
exposed to the weather.
E.
TESTS. Provide the tests as outlined hereinafter and other tests necessary to
establish the adequacy, quality, safety, completed status and suitable operation of
each system.
1)
GENERAL PROVISIONS
GROUND ROD TEST. Immediately after installation, test driven grounds and
counterposes with a Ground Resistance Direct-Reading Single-Test Megger,
utilizing the AC Fall-of-Potential Method and two reference electrodes five (5)
feet deep. Disconnect the ground rod to be tested from other ground systems
at the time of testing. The ground resistance for the electrical service shall be
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26 01 20-3
15 ohms or less. Submit the results, date of test, and soil conditions, to the
Engineer in writing, immediately after testing.
2)
This subcontractor shall balance phase currents of all distribution within plus or
minus 10 percent variation between average phase current and measured
individual phase currents.
3)
Written test record shall be supplied to the Owner to show compliance with
governing codes for:
a) Isolated Power Systems
b) Fire Alarm System
c) Grounding Continuity
4)
F.
4.
FINAL CORRECTIONS. Correct promptly any failure or defects revealed by
these tests as determined by the Engineer. Reconduct tests on these
corrected items as directed by the Engineer.
Concrete work shall be as specified within the Mechanical, Plumbing, and Electrical
General Conditions, except the concrete fixture bases and the concrete envelopes for
conduit shall be provided by the Electrical Contractor.
ALTERATIONS
A.
The Owner intends to make continued use of existing facilities. Utilities and services
to existing facilities shall not by interrupted without the Owner's approval as to the time
and duration. The Owner will continue to occupy the existing facilities throughout the
construction operations, and the Electrical Contractor shall so organize his work as to
cause a minimum of interference with the normal routine activities of the facilities. All
interruptions shall be scheduled at the convenience of the Owner.
B.
The Electrical Contractor shall remove, cap and/or relocate equipment, outlets,
conduit, wire, etc., as shown and specified on drawings, and as may become
necessary because of existing field conditions. It shall be the responsibility of the
Electrical Contractor to visibly examine all existing walls designated for removal, to
determine the conduit and the wiring that will require capping and/or removal, whether
or not such conditions are indicated on the drawings.
C.
All lighting fixtures, switches, receptacles, clocks, telephone outlets, intercom stations,
nurse call systems, dome lights, speakers, fire alarm outlets, special outlets, etc.,
which are shown with dotted line symbols on the demolition plans shall be removed
and the holes patched unless otherwise noted.
D.
All concealed conduit for circuits which are partially or completely abandoned may
remain in place. Exposed conduit for abandoned circuits shall be removed unless
otherwise noted.
E.
Wiring for existing circuits which must be re-routed, or which are partially abandoned,
shall be reconnected to serve the remaining outlets on the circuit.
F.
All wiring for a circuit which is to be abandoned shall be removed back to the panel
which supplied the circuit.
G.
The Electrical Contractor shall coordinate with the owner and shall turn over to the
owner all removed electrical equipment that the owner designates. All other
equipment that is removed shall become the property of the Electrical Contractor and
shall be removed from the job site.
GENERAL PROVISIONS
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26 01 20-4
H.
All existing wire and cables above the existing ceiling that must remain to serve other
areas of the building shall be re-supported at a maximum of 4'-6" on centers. All other
existing wire and cables above the existing ceiling of this space shall be removed by
the Electrical Contractor.
END OF SECTION
GENERAL PROVISIONS
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26 01 20-5
SECTION 26 05 19 - CONDUCTORS
1.
GENERAL
A.
2.
This section covers conductors for all voltages that are utilized for this project.
MATERIAL (600 VOLT)
A.
ALL CONDUCTORS AND CABLE shall conform to UL or IPCEA as applicable.
Provide recently manufactured cable, with guarantees and warranties initiated during
the contract period.
B.
600 VOLT CONDUCTORS
1)
3.
INSULATION
a)
Provide copper conductors with insulation rated for 600 volts.
b)
Unless otherwise specified, provide stranded copper conductors Type
TW, THW, THHN, or THWN for all conductors.
C)
Conform with the National Electrical Code for fixture wiring and
specifically to the temperature of the enclosure and to the wet or dry
location.
2)
FEEDERS, BRANCH CIRCUITS AND CONTROL CIRCUITS. Provide single
copper conductors throughout. Provide No. 12 AWG minimum branch circuit
wire size. Provide No. 14 AWG for control circuits, unless otherwise specified
or required by overcurrent protection.
3)
EXTERIOR FEEDERS OR BRANCH CIRCUITS. Provide Type RHW-USE or
THW-THWN conductors installed in underground raceways.
INSTALLATION OF CONDUCTORS (600 VOLT)
A.
B.
CONDUCTORS
GENERAL
1)
Provide conductors continuous from outlet to outlet, and splice only at outlet or
junction boxes.
2)
Circuit all feeders and branch circuits as shown on the plans. Approval of the
Engineer is required for deviations from the plans.
600 VOLT CONDUCTORS
1)
CONDUCTOR INSTALLATION. Install all conductors in a single raceway at
one time, insuring that conductors do not cross one another while being pulled
into the raceway. Leave sufficient cable at all fittings or boxes and prevent
conductor kinks. Keep all conductors within the allowable tension and
exceeding the minimum bending radius. Lubricants for wire pulling, if used,
shall conform to UL requirements for the installation and raceway material.
2)
CONDUCTOR SUPPORT. Provide conductor supports as required by the
National Electrical Code or as recommended by the cable manufacturer,
whichever requirement is more stringent. Where required, provide cable
supports in vertical conduits similar to O-Z Type C.M.T., and provide the lower
end of conduit with O-Z Type KVF ventilators.
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26 05 19-1
3)
SPLICING
a)
No splicing or joints will be permitted in either feeder or branch circuits
except at outlet or accessible junction boxes. Utilize compression type
solderless connectors, similar to O-Z Type XWC, when making splices or
taps in conductors No. 8 AWG or larger.
b)
Utilize pre-insulated twist-on connectors, 3M Company "Ranger Wing" or
Ideal Industries, Inc "Wing Nut", for splices and taps in conductors No. 10
AWG and smaller. Any other twist-on connectors must be approved by
the Engineer prior to installation. Also utilize this type of connector for
factory-made splices in fixtures or equipment.
c)
Pressure-indent type connectors shall be submitted to the Engineer for
approval.
d)
Tape all splices and joints with vinyl plastic tape manufactured by
Minnesota Mining & Manufacturing Company. Use sufficient tape to
secure insulation strength equal to that of the conductors joined.
Keep splices in underground junction boxes, handholes, and manholes
to an absolute minimum. Where splices are necessary, use resin
pressure splices and resin splicing kits manufactured by the 3M
Company, St. Paul, Minnesota, to totally encapsulate the splice.
e)
4)
CONDUCTOR TERMINATION. Provide all power and control conductors that
terminate on equipment or terminal strips, with solderless lugs or fork and
flanged tongue terminals. Provide T & B "STA-KON" tongue terminal. This
type conductor termination is not required when the equipment is provided with
solderless connectors.
5)
CONDUCTOR IDENTIFICATION. Identify phase, circuit, and voltage at each
panel, pull box, junction box, and switch. Provide waterproof non-metallic
bands or identification tag for each conductor. All secondary service, feeder,
and branch circuit conductors throughout the project secondary electrical
system shall be color coded as follows:
120/208V 277/480V
Phase A - Black
Phase B - Red
Phase C - Blue
Neutral - White
Ground - Green
4.
Yellow
Brown
Orange
Gray
Green
6)
Where color coded conductors are not commercially available, colored nonaging plastic tape may be utilized.
7)
Color code all control wire insulation and tag each splice and termination.
PRIMARY HIGH VOLTAGE (5 KV) CONDUCTORS
A.
CONDUCTORS
The Electrical Contractor shall furnish and install, where shown on the plans, 4,160
volt feeders consisting of 5 KV, single conductor stranded copper conductors, having
semi-conducting strand shield, cross-linked polyethylene insulation, tinned copper
tape shield, and an overall polyvinyl chloride jacket. The conductor insulation shall be
rated for temperatures in wet or dry locations for 90 degrees C., and shall be rated for
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26 05 19-2
ungrounded neutral (insulation level 133%) applications. All 5 KV cables shall be ITT
Royal type XLP-PVC, or approved equal by Aetna, Cablec, Collyer, Simplex, or
Okonite. All such cable shall be in accordance with and shall conform to the latest
requirements of the Insulated Power Cable Engineers Association.
5.
B.
All 5 KV cable splices and terminations shall be made according to the cable
manufacturer's instructions, using connectors and terminal lugs of the high pressure
attach type. All contact surfaces shall be cleaned to assure maximum conductivity.
All connector and terminal indentations shall be filled with solder and smoothed off.
Insulate the conductors, connectors and terminals, shield, and make all stress cones
using General Electric No. 8380 butyl base tape. Protect all insulation with an
adequate number of layers of 3M Scotch No. 33 tape. Paint finished surface areas of
all connections and splices with Scotchkote, or approved equal. All splicing or
termination kits shall be as manufactured by 3M, General Electric Company, or
approved equal.
C.
All 5 KV cable shall be installed in galvanized rigid steel conduit above grade and
either GRC or PVC conduit below grade depending upon the location (see section
RACEWAYS). All conduit shall bear the U.L. label and shall be installed in
accordance with the requirements of the National Electrical Code and these
specifications. All conduit containing 5 KV cables shall be completely grounded. All
exposed runs of conduit shall be labeled on the exterior every five feet along the
conduit with the words "4,160 VOLTS" painted in 2-inch high red letters by the
Electrical Contractor.
D.
Voltage tests shall be made in the field immediately after installation of the
conductors. The voltage shall be applied between the conductor and ground. The
initially applied DC voltage shall not be greater than 3.0 times the rated AC voltage.
The rate of increase from the initially applied voltage to 25 kilovolts DC shall be
approximately uniform and shall not be over 100 percent in 10 seconds nor less than
100 percent in 60 seconds. The duration of the DC voltage test shall be 15 minutes.
Submit the test data (leakage values) to the Engineer for approval.
PRIMARY HIGH VOLTAGE (15 KV) CONDUCTORS
A.
The Electrical Contractor shall furnish and install, where shown on the plans, 12,470
volt feeders consisting of 15 KV, single conductor stranded copper conductors, having
semi-conducting strand shield, cross-linked polyethylene insulation, tinned copper
tape shield, and an overall polyvinyl chloride jacket. The conductor insulation shall be
rated for temperatures in wet or dry locations for 90 degrees C., and shall be rated for
ungrounded neutral (insulation level 133%) applications. All 5 KV cables shall be ITT
Royal type XLP-PVC, or approved equal by Aetna, Cablec, Collyer, Simplex, or
Okonite. All such cable shall be in accordance with and shall conform to the latest
requirements of the Insulated Power Cable Engineers Association.
B.
All 15 KV cable splices and terminations shall be made according to the cable
manufacturer's instructions, using connectors and terminal lugs of the high pressure
attach type. All contact surfaces shall be cleaned to assure maximum conductivity.
All connector and terminal indentations shall be filled with solder and smoothed off.
Insulate the conductors, connectors and terminals, shield, and make all stress cones
using General Electric No. 8380 butyl base tape. Protect all insulation with an
adequate number of layers of 3M Scotch No. 33 tape. Paint finished surface areas of
all connections and splices with Scotchkote, or approved equal. All splicing or
termination kits shall be as manufactured by 3M, General Electric Company, or
approved equal.
CONDUCTORS
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26 05 19-3
C.
All 15 KV cable shall be installed in galvanized rigid steel conduit above grade and
either GRC or PVC conduit below grade depending upon the location (see section
RACEWAYS). All conduit shall bear the U.L. label and shall be installed in
accordance with the requirements of the National Electrical Code and these
specifications. All conduit containing 15 KV cables shall be completely grounded. All
exposed runs of conduit shall be labeled on the exterior every five feet along the
conduit with the words "12,470 VOLTS" painted in 2-inch high red letters by the
Electrical Contractor.
D.
Voltage tests shall be made in the field immediately after installation of the
conductors. The voltage shall be applied between the conductor and ground. The
initially applied DC voltage shall not be greater than 3.0 times the rated AC voltage.
The rate of increase from the initially applied voltage to 65 kilovolts DC shall be
approximately uniform and shall not be over 100 percent in 10 seconds nor less than
100 percent in 60 seconds. The duration of the DC voltage test shall be 15 minutes.
Submit the test data (leakage values) to the Engineer for approval.
END OF SECTION
CONDUCTORS
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26 05 19-4
SECTION 26 05 26 - GROUNDING SYSTEM
1.
2.
3.
GENERAL
A.
The entire electrical system and all electrical equipment shall be grounded in strict
accordance with the National Electrical Code and as shown on the drawings.
B.
The grounding system shall be continuous throughout the electrical system.
C.
All neutral conductors shall be continuous throughout the electrical system and shall
be grounded only at the service neutral at the service switch, or at the center point of
a transformer secondary winding for a separately derived system as indicated on the
drawings.
D.
When the service entrance switch or switchboard has a neutral bus bar, this bus bar
shall be bonded to the ground bus bar in the service entrance switch or switchboard.
E.
When a steel conduit contains only ground wires, the ground wires shall be bonded to
the conduit at both ends of the conduit run.
F.
All flexible conduits shall contain a properly connected green copper ground wire,
sized in accordance with National Electrical Code Article 250, unless otherwise
indicated.
G.
Service and equipment grounds to the water system piping shall be made using an
approved clamp installed in an accessible location. Provide jumpers around water
meters and insulated pipe connections.
H.
All cabinets, panels, boxes, appliance frames, conduits and other non-current carrying
metallic objects shall be grounded as required by the National Electrical Code.
I.
Install metallic raceways mechanically and electrically secure at all joints and at all
boxes, cabinets, fittings, and equipment.
J.
Bond all metal conduits to the ground bus of the panel, panelboard, or switchboard to
which they are connected by terminating each conduit with an insulated grounding
bushing having a ground wire, sized per the National Electrical Code, attached to the
ground bus.
K.
The Electrical Contractor shall furnish and install a properly sized green copper
ground wire along with the current carrying conductors in all non-metallic conduits,
regardless of whether or not the ground wire was shown on the drawings. Conduit
sizes shall be increased when necessary in order to accommodate the ground wires.
L.
Refer to section GENERAL PROVISIONS for Grounding Continuity tests required.
GROUND CONDUCTORS
A.
All ground wires shall be copper and, unless otherwise indicated, shall be insulated
with Type TW, THW, THHN, or THWN insulation, color green. Aluminum shall not be
substituted for copper in ground wires.
B.
Green insulated grounding pigtails that are furnished with fixtures and devices will be
acceptable.
SYSTEM GROUNDING ELECTRODE
GROUNDING SYSTEM
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26 05 26-1
4.
5.
6.
A.
The grounding electrode shall be as near as practicable to, and preferably in the same
area as, the grounding conductor connection to the system.
B.
If they meet the criteria set forth in sections 250-50 thru 250-70 of the National
Electrical Code, (1) a metal underground water pipe and (2) the metal frame of the
building and (3) a concrete-encased electrode and (4) a ground ring electrode (where
these electrodes are present) shall be bonded together to form the grounding
electrode system. Where none of the above electrodes is available, the grounding
electrode shall be a "Made Electrode" as per section 250-52 of the National Electrical
Code. Where a metal underground water pipe is the only grounding electrode
available, it shall be supplemented by one of the grounding electrodes specified in
section 250-54 of the National Electrical Code.
C.
A single electrode which does not have a resistance to ground (of 25 ohms or less)
shall be augmented by one additional electrode of any of the types specified in section
250-54 of the National Electrical Code.
EXOTHERMIC WELDING PROCESS (CADWELD)
A.
Grounding wire connections to building steel, concrete reinforcing rods, ground rods,
or located in concealed areas shall be cadwelded.
B.
The cadweld process is an exothermic welding process, producing a molecular weld
(not a mechanical contact). No outside source of power or heat is required. The
reaction in the cadweld process is a reduction of copper oxide by aluminum,
producing molten, super-heated copper.
GROUNDING OF SWITCHES AND RECEPTACLES
A.
The Electrical Contractor shall provide an equipment bonding jumper from the
grounding terminals of light switches to the grounded box that they are mounted in,
unless the device is listed for self-grounding.
B.
All receptacles shall be grounded by an insulated (green) copper conductor installed
with the branch circuit conductors in the conduit supplying these receptacles.
GROUNDING OF MOTORS
A.
7.
GROUNDING OF DUCTWORK
A.
8.
Connect the ground conductor to the conduit with an approved grounding bushing,
and to the metal frame with a bolted solderless lug. Bolts, screws and washers shall
be bronze or cadmium plated steel.
Provide a flexible ground strap, No. 6 AWG equivalent, at each flexible duct
connection at each air handler, exhaust fan, supply fan, etc., and install to preclude
vibration.
GROUNDING OF TRANSFORMERS
A.
All exposed non-current-carrying metal parts of transformer installations shall be
connected to the equipment grounding system.
B.
The secondary windings of transformers constitute a separately derived system. A
bonding jumper shall be used to connect the equipment grounding conductors of the
separately derived system and ahead of any system disconnecting means or
overcurrent device.
GROUNDING SYSTEM
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26 05 26-2
C.
9.
10.
11.
A grounding electrode conductor shall be used to connect the grounded conductor of
the separately derived system to the grounding electrode. This connection shall be
made at the source of the separately derived system and ahead of any system
disconnecting means or overcurrent device.
GROUNDING OF EMERGENCY GENERATOR
A.
The emergency power generation system is NOT a separately derived system by
virtue of the 3-pole transfer switches which do not switch the neutral (grounding
conductor). The Electrical Contractor shall not install a separate system grounding
electrode for the emergency generator.
B.
The Electrical Contractor shall connect the emergency generator to the equipment
ground system as required by the National Electrical Code.
GROUNDING IN PATIENT AREAS
A.
All receptacles shall be grounded by an insulated (green) copper conductor installed
with the branch circuit conductors in the conduit supplying these receptacles.
B.
The ground buses of normal and emergency panelboards that serve the same patient
areas shall be bonded with a #8 AWG copper ground conductor.
GROUNDING OF TELEPHONE SYSTEM
A.
Furnish and install a green size 6 AWG copper wire in 1/2" conduit from the main or
incoming telephone cabinet to the nearest main cold water line and connect to the water
line with the proper clamps and fittings. The point of connection shall be located so that
it is normally visible for inspection. Provide jumpers around all valves, meters, etc.,
between the point of connection and the point where the water line leaves the building.
END OF SECTION
GROUNDING SYSTEM
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26 05 26-3
SECTION 26 05 33 - RACEWAYS AND FITTINGS
1.
GENERAL
A.
2.
This section includes raceways and fittings complete.
MATERIALS
A.
RACEWAYS. All raceways shall be new and shall bear the U.L. label.
1)
ELECTRICAL METALLIC TUBING. Provide cold rolled welded steel conduit,
galvanized on both the outside and inside with coated interior. All connectors
and couplings shall be steel alloy, raintight and concrete tight. Setscrew
connectors and couplings are approved for indoor exposed or concealed (but
not encased in concrete or masonry) work only. Gland compression
connectors and couplings are approved for all locations. Indenter type
connectors and couplings are not approved and shall not be used. Connectors
up to and including size 1-1/2" shall be with insulated throat. All connectors
shall be terminated with a bonding type locknut and for conduit sizes 2" and
larger, a plastic insulated bushing. Threaded steel insulated grounding
bushings having solderless lugs shall be used where required.
2)
RIGID STEEL CONDUIT. Provide zinc-coated rigid steel conduit and conduit
fittings. All couplings and fittings shall be of the threaded type. Threadless
fittings shall be used only when specific approval is given.
3)
PVC COATED RIGID STEEL CONDUIT. Provide rigid, mild steel pipe
conforming in all respects to the physical dimensions of UL Standard UL-6, with
the exception that it is not zinc coated. The pipe shall be pickled and cleaned
and shall have a thermally fused and bonded coating of 15 mils polyvinyl
chloride on exterior surfaces, as manufactured by Rob Roy Industries. All
fittings, boxes and seals shall also be PVC.
4)
FLEXIBLE METALLIC CONDUIT. Provide flexible conduits, zinc-coated steel,
single strip type, UL listed. Use American Brass "Sealtite" flexible, liquid-tight
conduit in damp or wet locations.
SURFACE METAL RACEWAYS. Provide a two-piece steel raceway with
removable covers at sizes indicated on the drawings, complete with fittings and
all necessary components for a complete installation.
5)
B.
6)
RIGID PVC CONDUIT. Provide heavy wall polyvinyl chloride conduit, Carlon
Type 40 (NEMA EPC-40-PVC, Type II/III). Conduit shall conform to all
provisions of Article 347 of the National Electrical Code.
7)
WIREWAY (surface trough) shall be constructed of code gauge steel and shall
be in accordance with Underwriters Laboratories Standard UL-870 for
Wireways, Auxiliary Gutters and Associated Fittings. Wireway shall be lay-in
type (no cross bars or straps) with hinged cover. Indoor wireway shall be
constructed with knockouts. Outdoor wireway shall be raintight with no
knockouts. All sheet metal parts shall be coated with a rust-inhibiting primer
and a gray baked enamel finish. All hardware shall be plated to prevent
corrosion. Wireway shall be of standard dimensions and sized in accordance
with the National Electrical Code for the particular installation. Wireway shall
be Square D "SQUARE-DUCT" or approved equal.
OUTLET BOXES, PULL BOXES AND CONDUIT FITTINGS.
RACEWAYS AND FITTINGS
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26 05 33-1
Provide outlet boxes, pull boxes, and conduit fittings as described below. Catalog
numbers shown are those of Appleton Electric Company. Steel City, National Electric
Products Corp., and Raco are equally acceptable.
1)
OUTLET BOXES
Lighting Boxes (concealed) - No. 40-3/4
Lighting Boxes (concrete) - No. OCR Series
Lighting Boxes (exposed) - No. 4S-3/4 or 40-3/4
Switch, Receptacle, Telephone, Dictation, and Junction Boxes (flush) - No. 4S3/4 or No. 225 where separate extension or plaster ring cannot be used.
Switch, Receptacle, Telephone, Dictation, and Junction Boxes (exposed) - FS
Series
Switch and Telephone Boxes (concealed in narrow mullions) - Bell Electric Co.
No. 447, 448, or 449.
Weatherproof or Exterior Boxes - FS Series with cast cover and neoprene
gasket.
Where space is limited, No. 4CS-3/4 handy boxes may be used for a switch,
receptacle, telephone or dictation outlet with specific approval only. Provide
extension and plaster rings as required. Size outlet boxes in accordance with
the allowable fill permitted by the National Electrical Code.
2)
PULL BOXES. Provide code gauge galvanized sheet metal pull boxes sized as
per the National Electrical Code or as shown on the drawings. Provide a
removable cover on the largest access side of the box unless otherwise
detailed. Where cast boxes are specified, provide conduit entrances with
threaded hubs. Provide stainless steel screws in all exterior locations and in
wet or damp locations.
3)
CONDUIT FITTINGS.
Couplings (EMT)
-
Series 95T gland compression (all locations)
Series TWC set screw (indoor only - but not
encased in concrete or masonry)
Connectors (EMT)
-
Series 86T gland compression (all locations)
Series TW set screw (indoor only - but not
encased in concrete or masonry)
Insulating Bushings (1-1/4 inch rigid conduit and larger) - Series BBU
Straight Box Connectors (flexible conduit) - Series 728 9V
Angle Box Connectors (flexible conduit) - Series 738 2V
Sealing Gland Assembly - OZ, Type FSK
Expansion Joints - OZ, Type AX or TX with bonding jumpers and clamps.
Expansion and Deflection Fittings - OZ, Type DX
RACEWAYS AND FITTINGS
1424
26 05 33-2
Cast Metal Conduit Fittings - Crouse-Hinds, Condulets form 7 with wedge nut
cover.
3.
EXECUTION
A.
RACEWAYS
1)
Install all wiring, including telephone, dictation, low voltage, etc., in metal
raceways.
2)
Install raceways concealed, except in mechanical equipment rooms or where
indicated on the plans.
3)
TYPES.
a)
Conduits located exposed, concealed inside shafts, in concrete slabs
above grade, above ceilings, and vertically in furred walls shall be EMT.
GRC is also approved for these locations.
b)
Individual uninterrupted conduits located horizontally between boxes
containing wiring devices (as defined in specification section WIRING
DEVICES) in furred walls shall be either EMT or metallic flexible conduit
(must be hospital grade armor clad cable if a health care facility) at the
Contractor's option. The maximum length of metallic flexible conduit
(hospital grade armor clad cable if a health care facility) between wiring
devices in furred walls shall be ten (10) feet. All other horizontal conduit
in furred walls shall be EMT except as listed below.
Exceptions to a) and b) above are:
c)
Sleeves, conduits in slabs on grade, and conduits for feeders over 600
volts shall be GRC.
d)
Conduits for connection (maximum length of six feet) to vibrating
equipment (motors, transformers, etc.) and for heat loops to light fixtures
(from junction boxes above them) shall be metallic flexible conduit.
Sealtite (weatherproof) shall be used in damp or wet locations.
e)
Conduits located below grade in direct contact with the earth shall be
schedule 40 PVC or PVC coated rigid steel conduit. These raceways
shall be encased in 3 inches of concrete where indicated. All PVC
conduits located below paved areas shall be encased in 3 inches of
concrete.
f)
Cable tray, wiremold, plugmold, wireways, and other raceways shall be
located where shown on the plans.
4)
Any type of conduit or raceway that is specifically labeled on the plans shall
take precedence over the specification. The Electrical Contractor must obtain
written permission from the Engineer for any other deviation from the
specification requirements.
5)
CONTINUITY. Provide metallic raceways continuous from outlet to outlet, and
from outlets to cabinets, junction or pull boxes. Enter and secure conduit to all
boxes to provide electrical continuity from the point of service to outlets.
Provide double locknut and bushing on terminals of metallic couduits.
RACEWAYS AND FITTINGS
1424
26 05 33-3
6)
SIZE. Use raceways not smaller than 1/2-inch, unless otherwise indicated.
7)
RACEWAYS EXPOSED. Run exposed raceways in straight lines at right
angles or parallel with walls, beams or columns.
8)
RACEWAYS IN PLAIN (NON-REINFORCED) CONCRETE. Do not place
raceways in plain concrete, such as cement toppings on structural floors,
without special approval. Install, however, in not-reinforced concrete headers
provided for their installation.
9)
RACEWAYS IN REINFORCED CONCRETE. Do not displace reinforcing steel
to accommodate the installation. In general, locate all embedded conduits in
the physical center of the particular section of concrete. Provide raceways
embedded in reinforced concrete conforming to the following usual types of
conditions, unless otherwise approved by the Engineer. Particular attention is
called to the fact that there are many extenuating conditions where the
contractor may be instructed during the course of the project not to place
embedded conduits in certain areas, generally due to the possibility of unsightly
cracking or for structural reasons. This instruction does not entitle the
contractor to extra compensation. Special approval will be required for any
condition not covered by the following usual conditions:
a)
Floors and Walls - Maximum Allowance: displacement of 1/3 of
thickness of concrete, spaced not less than three diameters on centers.
b)
Sleeves through floors and walls - Maximum Allowance: 2-inch
maximum pipe size, not less than three diameters on centers, or as
indicated on the drawings.
Unless otherwise indicated, conduit sleeves in floors shall be steel and shall
extend 3 inches above the finished floor and, where applicable, flush with the
underside of the floor slab.
10)
RACEWAYS THROUGH ROOF. Where raceways penetrate the roof seal,
provide suitable pitch pockets of lead flashing.
11)
RACEWAYS ENTERING THE BUILDING BELOW GRADE. Provide raceways
with galvanized cast-iron wall entrance seals, having a watertight sealing gland
assembly where the raceways enter into a dry (excavated) area.
12)
RACEWAYS IN FURRED SPACES. Install raceways in accordance with the
requirements of the National Electrical Code. Do not anchor or strap conduits
to the ceiling furring channels or attach to furred ceiling hanger wires without
the Engineer's approval.
13)
STRAPS AND HANGERS. Conduit shall be supported from building structure
on approved types of galvanized brackets, ceiling trapeze or pipe straps, or
hangers secured by means of toggle bolts on hollow masonry; or expansion
bolts in concrete or brick; or machine screws on metal surfaces; or wood
screws on wood construction. Conduits shall be attached to the hanging
systems by fittings equal to those manufactured by Caddy Fasteners. Nails
shall not be used as a means of fastening boxes or conduits. Perforated flat
steel straps shall not be used for supporting conduit. Conduits shall not be
supported from ductwork or ductwork supports. All conduit shall be properly
supported in order to deter any possible vibration, noise, or chatter. Caddy
RACEWAYS AND FITTINGS
1424
26 05 33-4
clips may be used to fasten conduit to suspended ceiling wire hangers, for 1/2"
and 3/4" conduit, with not more than two (2) conduits per wire.
14)
JOINTS AND CONNECTIONS
a)
METAL CONDUITS. Make watertight all couplings and threaded
connections in threaded conduit. Cut all joints square, ream smooth, and
properly thread. Fit all box connections with a minimum of two approved
locknuts and one steel, plastic or fiber bushing forming an approved tight
bond with box. Provide locknuts both inside and outside of the enclosure
to which the conduit is attached. Use raintight compression type fittings
for electrical metallic tubing systems and use at least one locknut on the
inside of each enclosure entry. Provide grounding locknuts or bushings
where required in Section GROUNDING SYSTEM.
b)
PVC CONDUITS. Make watertight all couplings and connectors in
conduit runs. Utilize solvent cement joints of a type approved by the
manufacturer for all couplings and fittings. Provide adapters and
locknuts where conduit is attached to metal junction boxes, panels, etc.
15)
BENDS. Where more than one conduit in a bank of exposed conduit changes
direction, all bends shall be concentric. Conduit bends shall not be less than
standard radius, unless otherwise indicated. Conduit bends for power feeders
over 600 volts and for telephone feeders shall be long radius.
16)
SEALING OF SLEEVES. All openings and sleeves through which a conduit
passes in walls, floors, and ceilings shall be properly sealed after the conduit is
installed to prevent transmission or leakage of liquids, fire, smoke, and sound.
Openings in rated walls or floors shall be sealed with mineral wool tightly
packed around the conduit in the opening, after which both sides of the opening
shall be caulked with a resilient non-hardening caulking (U.S.G. Acoustical
Sealant, Tremco, Specified Technologies, Inc., or Nelson). Conduit passing
through a fire rated acoustical tile ceiling shall be sealed with mineral wool
tightly packed around the conduit in the opening, maintaining the fire rating of
the acoustical tile ceiling. Conduit passing through concrete floor construction
or sleeves shall be sealed with mineral wool tightly packed around the conduit
in the opening, maintaining the fire rating of the acoustical tile ceiling. The use
of Chase Foam, "Fire-Seal" as manufactured by O-Z/Gedney, "Fyre-Shield" as
manufactured by Tremco, or "SpecSeal" as manufactured by Specified
Technologies, Inc., is approved for conduit passing through fire rated floors and
walls.
17)
THREADS. Clean all threads of rigid conduit. Coat all male threads of all steel
conduit installed underground or in or under concrete slabs with teflon
immediately before being coupled together.
18)
RUNNING THREADS. Use "Erickson" type couplings in lieu of running
threads.
19)
PROTECTION. Cap raceways stubbed up, including those in cabinets,
immediately upon their installation. The use of paper or rag wads will not be
permitted.
20)
EXPANSION JOINTS. Provide raceways crossing expansion joints with Type
AJ bonding jumper for rigid conduit, and Type TJ bonding jumper for electric
metallic tubing. Where differential settlement may occur, use deflection fittings.
RACEWAYS AND FITTINGS
1424
26 05 33-5
B.
21)
GENERAL LOCATION REQUIREMENTS. All raceway runs shown are
diagrammatic. Determine exact locations in the field except where otherwise
noted or where dimensions are specified on the drawings. Conduits shall not
run within 6 inches of pipes carrying hot liquids, steam, or gases.
22)
All empty conduits shall be provided with a pull wire.
OUTLET BOXES AND PULL BOXES
1)
Rigidly mount all boxes and provide with suitable screw fastened covers. Plug
open knock-outs or holes in boxes with suitable blanking devices.
2)
Install pull boxes in locations that will be accessible after completion of the
building or as shown on the drawings.
3)
The Electrical Contractor shall furnish and install pull boxes, wherever
necessary in order that a run of conduit between outlet and outlet, between
fitting and fitting, or between outlet and fitting shall not contain more than the
equivalent of three quarter bends (270 degrees total).
4)
Label the covers of all boxes with a permanent marker indicating the
panelboard name and circuit number of all internal wiring.
END OF SECTION
RACEWAYS AND FITTINGS
1424
26 05 33-6
SECTION 26 22 00 - DRY-TYPE TRANSFORMERS
1.
2.
GENERAL
A.
This section covers dry-type transformers used to alter the service entrance voltage
for local utilization.
B.
The service transformer is covered in Section PAD MOUNTED TRANSFORMER
(LIQUID FILLED).
C.
The dry-type transformer(s) shall be as manufactured by Siemens, Westinghouse,
General Electric, ACME, Square D (Sorgel), Heavi-Duty, or approved equal.
MATERIAL
A.
The Electrical Contractor shall furnish and install dry-type transformers sized in
accordance with the transformer schedule and/or notes shown on the drawings.
B.
Unless otherwise noted, dry-type transformers shall be three-phase, 60 hertz,
two-winding, 480V delta primary to 120/208V three-phase, four-wire wye secondary
with grounded neutral. Transformers 15 KVA or smaller shall have two 5% FCBN (full
capacity below normal) primary taps. Transformers larger than 15 KVA shall have two
2-1/2% FCAN (full capacity above normal) and four 2-1/2% FCBN primary taps.
Transformer and core shall be manufactured in accordance with NEMA and ASA
standards.
C.
Transformers 15 KVA or smaller shall have class 185 (formerly class F) insulation,
rated for 115 degree C rise under full load in a 40 degree C ambient. The case shall
be non-ventilated (enclosed).
Transformers larger than 15 KVA shall have class 220 (formerly class H) insulation,
rated for 150 degree C rise under full load in a 40 degree C ambient. The case shall
be ventilated.
D.
Transformers shall contain internal sound absorbing mounting. Maximum sound
levels shall be:
KVA
0-9
10 - 50
51 - 150
151 - 300
301 - 500
501 - 1000
3.
DECIBELS
40
45
50
55
60
64
EXECUTION
A.
Electrical conduit terminations to the transformers shall be through flexible conduit
connections to prevent transmission of noise and vibration.
B.
All floor mounted transformers shall be mounted on vibration isolating pads equal to
Fabcel 68 durometer pads.
C.
Suspended transformers shall be hung from steel rods bolted to steel channel
anchored to the building structure. Hanger rods shall be sized in accordance with the
weight of the transformer, shall be no less than 1/4" diameter, and shall have
DRY-TYPE TRANSFORMERS
1424
26 22 00-1
rubber-in-shear type vibration isolators. Provide an auxiliary platform fabrication from
structor channel beneath those transformers which do not have integral mounting
facilities.
D.
Wall mounted transformers shall be supported from wall anchors to bolts through the
wall to a distributing channel or plate on the opposite side. A vibration isolating pad
shall be installed between the transformer and the wall.
E.
Outdoor transformers shall have enclosures that are completely weatherproof,
tamperproof, and lockable, with hinged doors for access to separate primary and
secondary wiring compartments. They shall have moisture resistant treatment or
encapsulation of windings. Transformers shall be mounted on creosoted 4" x 4"
timbers set upon a clean roof with sides mopped to the roofing with mastic.
END OF SECTION
DRY-TYPE TRANSFORMERS
1424
26 22 00-2
SECTION 26 24 13 - SWITCHBOARDS (600V)
1.
2.
GENERAL
A.
This section covers Fusible Switchboards, which shall be utilized for units with 1600
amp and larger bus structures.
B.
Fusible panelboards for bus structures sized 1200 amps and smaller are covered in
Section PANELBOARDS AND SAFETY SWITCHES.
C.
Electrical Service is covered in Section UNDERGROUND ELECTRICAL SERVICE.
D.
Fuses are covered in Section FUSES.
E.
The switchboards specified are as manufactured by Square D Company. Equipment
manufactured by Siemens, Westinghouse, Allen Bradley, Cutler-Hammer, or General
Electric will be acceptable.
F.
Refer to Section GENERAL PROVISIONS for Nameplates.
MATERIAL
A.
The switchboard framework shall be fabricated on a die-formed steel base or base
assembly consisting of formed steel and commercial channel welded or bolted
together to rigidly support the entire shipping unit for moving on rollers and floor
mounting. The framework is to be formed code gauge steel, rigidly welded and bolted
together to support all coverplates, bussing, and component devices during shipment
and installation. Each switchboard section shall have an open bottom and individual
removable top plate for installation and termination of conduit. Top and bottom
conduit area is to be clearly shown and dimensioned on the shop drawings. The
wireway front covers are to be hinged to permit access to the branch switch load side
terminals without removing the covers. All front plates used for mounting meters,
selector switches or other front mounted devices shall be hinged with all wiring
installed and laced with flexibility at the hinged side. All closure plates shall be screw
removable and small enough for easy handling by one man. The paint finish shall be
gray enamel over a rust-inhibiting phosphate primer.
B.
The switchboard bussing shall be either copper or tin plated aluminum of sufficient
cross-sectional area to continuously conduct rated full load current with a maximum
temperature of 65 degrees C. The bus bars shall be braced for short-circuit stresses
up to 100,000 RMS amps (symmetrical). The main Horizontal bus bars between
sections shall be located on back of the switchboard to permit a maximum of available
conduit area and shall be fitted with a plastic barrier over the top to protect it from
falling objects (tools, bolts, etc.) when energized. The end section is to have bus bar
provisions for future addition of a switchboard section. The provisions shall include
the bus bars installed to the extreme side of the switchboard and prepunched to
facilitate future bolted splice plates. The horizontal main bus bar supports,
connection, and joints are to be bolted with grade 5 carriage bolts and Belleville
washers to be free of required periodic maintenance. Neutral busses shall be
insulated from the switchboard and shall be the same size and material as the phase
busses. All switchboard interiors shall be provided with a copper ground bus, equal to
50% ampacity of the phase bus, which shall be bonded to the switchboard enclosure.
C.
All switches 800 ampere and larger shall be the fusible bolted pressure contact type
with ratings as shown on the drawings. The switches shall have switch blades which
are visible in the OFF position when the door is open. Bolted pressure contacts shall
be made by firmly bolting the switch blades to the stationary contact terminals and to
SWITCHBOARDS(600V)
1424
26 24 13-1
the hinge terminals. Switches having butt-type contacts will not be accepted. Lugs
shall be suitable for copper and shall be front removable. All current-carrying parts
shall be plated. The switch mechanism shall be front-operated, fusible, 3 pole (w/full
neutral assembly), and shall have a quick-make, quick-break operating mechanism.
The switch handle shall have provisions for locking in the OPEN or CLOSED positions
with at least three padlocks. A mechanical interlock shall be provided to prevent
opening the door when the switch is closed. The switches shall be fusible for Class L
current-limiting fuses. The switches shall be manufactured and tested in accordance
with NEMA and UL standards where applicable. The switches shall be of equal
quality to those manufactured by Pringle.
D.
All switches 600 amperes and less shall be quick-make, quick-break and suitable for
use on the service as described for the sizes as shown on the associated drawings.
The units shall be listed by Underwriters' Laboratories and, where applicable, shall be
dual horsepower rated for both standard one-time or dual-element fuses. The fusible
switches shall be group mounted in panel-type construction. Each switch is to be
enclosed in a separate steel enclosure. The enclosure shall employ a hinged cover
for access to the fuses which shall be interlocked with the operating handle to prevent
opening the cover when the switch is in the ON position. This interlock shall be
constructed so that it can be released with a standard electrician's tool for testing
fuses without interrupting service. The units shall have padlocking provisions in the
OFF position and the operating handle position shall give positive switch position
indication, i.e., horizontal OFF, diagonal ON.
E.
Shunt trips for use with ground fault protection devices shall be furnished with
switches as indicated on the Power Riser Diagram. Switches shall be furnished with
fuses of the size and type indicated on the drawings. Switches shall be equipped with
de-ionizing arc quenchers and an external operating handle which may be locked in
either "ON" or "OFF" position. Handle shall be clearly marked to indicate position of
switch. The switch cover shall have a cover interlock with provisions for momentarily
voiding the interlock. All switches shall be Underwriters' Laboratory listed.
F.
Provide a ground fault protection system to control the main switch and feeder
switches as indicated on the Power Riser Diagram. Each set of ground fault
protection equipment shall consist of a ground monitor, encircling all phase and
neutral conductors, connected to a solid-state ground relay sensor which initiates
tripping of the circuit interrupting device. Ground protection shall provide an
adjustable time delay relay range from instantaneous to 60 cycles and an adjustable
trip setting. Circuit interrupter shunt trip and relay shall operate from a 120 volt AC
control source. Control transformers within the switchboard shall be used for 120 volt
AC source for higher incoming voltages. Where main and feeder ground fault
protection is shown, the sensor units shall have interlocking circuitry to cause the
feeder circuit to operate instantaneously for a fault on its load side and to restrain the
ground fault sensor upstream from operating until the preselected time setting is
reached. It shall be the Electrical Contractor's responsibility to set these relays as
recommended by the manufacturer and NEC. Furnish (mounted on the switchboard)
a test panel to test each ground fault sensor in the switchboard. The system shall be
arranged so that sensors can be tested without tripping the device and also by tripping
the device.
G.
The switchboard(s) shall be designed, manufactured, and tested in accordance with
the latest applicable standards of NEMA, NEC, ANSI, IEEE, and OSHA. All
switchboards shall contain the Underwriters' Laboratories label.
H.
The switchboard shall contain an ammeter with a phase selector switch so that each
phase can be monitored. The switchboard shall contain a voltmeter with a phase
selector switch. The meters shall be direct-reading (no multiplier), full range, and shall
SWITCHBOARDS(600V)
1424
26 24 13-2
be recognized under U.L. # 1437.
I.
3.
The main switchboard shall be rated for, and shall bear, a S/E (service entrance)
label.
EXECUTION
A.
Coordinate all locations, size, and installation details of this equipment with the
anticipated building construction to insure that the switchboard fits the space provided.
B.
The Electrical Contractor shall furnish and install a 6-inch high concrete housekeeping
pad for the switchboard(s).
C.
Properly align, ground, and anchor (per BOCA seismic requirements) the
switchboard(s).
D.
Tighten the bolted bus joints with a torque wrench to the manufacturer's
recommended torque values.
E.
Adjust all operating mechanisms for free mechanical movement per the
manufacturer's specifications.
F.
Clean all surfaces. Touch up all scratched surfaces to match the original finish.
END OF SECTION
SWITCHBOARDS(600V)
1424
26 24 13-3
SECTION 26 24 16 - PANELBOARDS AND SAFETY SWITCHES
1.
2.
GENERAL
A.
This section covers Circuit Breaker Lighting and Power Panelboards, Fusible Power
and Motor Starter Panelboards, and Safety Switches.
B.
Fuses are covered in Section FUSES.
C.
The Panelboards and Safety Switches shall be as manufactured by Square D,
Cutler-Hammer, Siemens, or General Electric.
D.
Individually-mounted starters are covered in Section MOTORS AND MOTOR
CONTROLS.
E.
Refer to Section GENERAL PROVISIONS for Nameplates.
MATERIAL
A.
Circuit Breaker Lighting and Power Panelboards.
1)
Panelboards shall be dead front safety type equipped with circuit breakers.
The panelboard, including all bus bracing, shall have an integrated short circuit
withstand rating equal to the short circuit interrupting capacity of the circuit
breakers. Panelboard bus structure and main lugs or main circuit breaker shall
have current and voltage ratings, and number of phases, poles, and wires as
indicated on the drawings.
2)
Circuit Breakers shall be quick-make, quick-break, bolt-on type having
over-center toggle mechanisms with thermal-magnetic trips and shall be trip
free. Multi-pole circuit breakers shall have common trips and a single operating
handle. Handle tie bars will not be accepted. Circuit breakers shall be
provided with a means for indicating a tripped position. Circuit breaker voltage,
ampere rating, and number of poles shall be as indicated on the drawings. All
circuit breakers shall have a minimum short-circuit interrupting capacity of
10,000 amperes RMS symmetrical, unless otherwise indicated. Circuit
breakers shall be equipped with individually insulated, braced, and protected
connectors.
3)
UL Class A (5 milliampere sensitivity) ground fault circuit protection shall be
provided on 120
VAC branch circuits as shown on the plans or in the panelboard details. This
protection shall be an integral part of the branch circuit breaker which also
provides overload and short circuit protection for branch circuit wiring. Tripping
of a branch circuit breaker containing ground fault circuit interruption shall not
disturb the feeder circuit to the panelboard. A single pole circuit breaker with
integral ground fault circuit interruption shall require no more panelboard
branch circuit space than a conventional single pole circuit breaker.
4)
The panel box shall be fabricated from code gauge galvanized steel. Unless
otherwise indicated, panelboards shall be standard width with boxes having a
minimum width of 20 inches and a minimum depth of 5-3/4 inches.
5)
The panelboard front shall be surface or flush mounted as indicated on the
drawings, fabricated from cold-rolled steel, coated with rust-inhibiting primer,
finished with ANSI-61 light gray baked-on enamel paint, and shall have a door
equipped with concealed hinges, a semi-flush or flush lock requiring a milled
key, and a framed directory card with a clear plastic covering mounted on the
inside of the door. The directory card shall provide a space at least 1/4" high by
PANELBOARDS AND SAFETY SWITCHES
1424
26 24 16-1
3" long, or the equivalent, for each circuit. The directory shall be typed to
identify the load fed by each circuit. At least one key shall be provided with
each panelboard and all panelboard locks shall be keyed alike. The
panelboard front shall be fastened to the panel box with machine screws or
other approved fastening hardware and shall not be removable with the door in
the closed position.
6)
The panelboard interiors shall be equipped with bussing, circuit breakers, and
adjustable means for positioning the interior within the enclosure.
7)
All main bus and circuit breaker branch bus shall be copper having 98%
conductivity, sized in accordance with Underwriter's Laboratories standards.
Aluminum bus shall not be acceptable. Neutral busses shall be insulated from
the panelboard and shall be the same size as the phase busses. The location
of the main terminations shall be determined by the entrance of the feeders to
the panelboard enclosure. In those cases where the feeders pass
through the panelboard assembly, extra wide gutters shall be provided.
B.
8)
The panelboard interior shall be provided with a copper ground bus, equal to
50% ampacity of the phase bus, which shall be bonded to the panelboard
enclosure, and shall be properly connected by the Electrical Contractor to the
nearest building steel or approved grounding point.
9)
The neutral bus and the ground bus shall be provided with an individual
terminal or lug for each wire connected to it.
10)
Terminals for feeder conductors to the panelboard mains and neutral shall be
UL listed as suitable for the type of conductor specified. Terminal for branch
circuit wiring, both breaker and neutral, shall be UL listed as suitable for the
type of conductor specified.
11)
Bussing sequence shall be distributed phase sequence type. Bus sequence
shall start at the top left phase bus of the interior for both top and bottom feed
panels. Provisions or spaces for future breakers shall be located at the bottom
of the panel and be fully bussed complete with all necessary mounting
hardware less the breaker. Locate next to each breaker, space, or provision an
individual number permanently affixed to the panelboard. Numbering tape or
painted numbers shall not be acceptable.
12)
The inside of the panel or door shall have a printed nameplate indicating the
name of the panel manufacturer, shop order number, panel type, system
voltage, and bus ampacity. Panel shall be marked with its UL short circuit
withstand ratings.
13)
All panelboards shall be built in accordance with and to meet the requirements
of the applicable sections of the National Electrical Code, NEMA Publications
PB1, and OSHA. All panelboards shall bear the Underwriter's Laboratories
Label.
14)
Circuit breaker lighting panelboards shall be of approved quality equal to
Square D type NQOD for 120/208 volts, and Square D type NEHB for 277/480
volts. Circuit breaker power panelboards shall be of approved quality equal to
Square D type I-Line.
Fusible Power and Motor Starter Panelboards
1)
Fusible power and motor starter panelboards shall be dead-front safety type
equipped with quick-make, quick-break fusible disconnect switches. The panel,
PANELBOARDS AND SAFETY SWITCHES
1424
26 24 16-2
including all bus bracing, disconnect switches, fuse clips, and associated
current carrying components, shall have a minimum integrated short circuit
withstand rating of 50,000 amperes RMS symmetrical. Panelboards shall be
successfully subjected to short circuit tests, temperature tests, and insulation
dielectric tests as a complete assembly. Test results shall be submitted to the
Engineer if requested by him. The panel bus structure and main lugs or main
switch shall have current and voltage ratings, and number of phases, poles,
and wires as indicated on the drawings.
2)
All bus bars shall be either copper or tin-plated aluminum, sized in accordance
with Underwriter's Laboratories standards, and shall be made all from the same
material. Neutral busses shall be insulated from the panel and shall be the
same size and material as the phase busses. Main horizontal bussing shall be
full size throughout without reduction. The bus structure shall accommodate
bolted branch switches and motor starters as indicated on the drawings without
modification to the bus assembly. No additional lineside wiring shall be
necessary to add disconnect switches. Space for future switches or motor
starters shall be bussed for the maximum devices that can be fitted into them.
3)
The disconnect switch shall be quick-make, quick-break, fusible, dual
horsepower rated, dead front, front accessible, having visible blades. Switch
handles shall physically indicate ON and OFF position. Such handles shall also
be able to accept three padlocks having heavy duty industrial type shackles,
and be padlocked in the OFF position. Covers shall be interlocked with the
switch handles to prevent opening in the ON position. An interlock override
device shall be provided to allow authorized personnel to release the interlock
for inspection purpose when the switch is in the ON position. Switch ampere
rating and number of poles shall be as indicated on the drawings. Fuse clips
shall accommodate the classification of fuses as indicated in the FUSES
specification section.
4)
Unless otherwise indicated, all magnetic motor starters shall be full voltage
(across-the-line), single-speed, non-reversing. Reduced voltage magnetic
motor starters, if required, shall be as indicated on the drawings. The NEMA
size of each motor starter shall be as indicated on the drawings. All motor
starters shall be of the combination type consisting of a fusible disconnect
switch dual horsepower rated for the indicated starter size, and an adequate
horsepower rated contactor. Each motor starter shall be mounted in an
individual compartment equipped with a hinged door and external overload
reset mechanism. The starter door shall be mechanically interlocked with its
disconnect switch to prevent opening when the disconnect is in the ON position
except by means of the interlock override device. Starters shall be vertical
action type employing an overload relay contact in each phase. The Electrical
Contractor shall size the overload relay thermal units for each motor based on
the starter ambient temperature, the nameplate ampere rating of the motor, and
according to the National Electrical Code. Pushbuttons or selector switches
shall be provided in the starter covers as indicated on the drawings. Each
starter shall have a red "RUN" pilot light mounted in the starter door. Pilot lights
shall be push-to-test type. Each starter shall have its own 120-volt control
transformer, of adequate size, complete with secondary fuse, for control power.
The minimum size control transformer shall be 75 volt-amperes. Control
transformer fusing shall be omitted only if prohibited by the National Electrical
Code. All control power shall be 120 volts, 60 hertz. The control transformer
shall be omitted if the panel has a neutral bus and is supplied with 120/208
volts. In this case, the 120 volt control power shall be obtained from the load
side of each starter disconnect switch through separate fuses located in the
starter compartment.
5)
All panel interiors shall be provided with a copper ground bus, equal to 50%
PANELBOARDS AND SAFETY SWITCHES
1424
26 24 16-3
ampacity of the phase bus, which shall be bonded to the panel enclosure and
shall be properly connected by the Electrical Contractor to the nearest building
steel or approved grounding point, if the feeder conduit is smaller than 2 inches,
with a conductor size not smaller than called for in Table 250-122 of the
National Electrical Code nor smaller than size 8 AWG copper conductor.
C.
6)
The panel assembly shall be enclosed in a surface mounted steel cabinet. The
rigidity and gauge of the steel shall be as specified in UL Standard 50 for
cabinets. The size of wiring gutters shall be in accordance with UL Standard
67. Cabinets shall be equipped with a four-piece front without door and shall
have self-adjusting trim clamps or other approved fastening hardware. Fronts
shall be of full-finished steel, coated with rust-inhibiting primer and finished with
ANSI-61 light gray baked-on enamel paint.
7)
Each panel shall be identified by a Micarta nameplate indicating the panel
number as indicated on the drawings. The outside of the panel shall have a
printed nameplate indicating the name of the panel manufacturer, the
manufacturer's shop order number, panel type, system voltage, and bus
ampacity. Mounted on the outside of each disconnect switch and motor starter
door shall be a Micarta nameplate indicating the circuit and the motor
identification.
8)
All wiring terminals for conductors leaving the panel shall be designed to be
used with the type of conductor specified.
9)
Panels shall be designed, manufactured, and tested in accordance with the
latest applicable standards of NEMA, NEC, ANSI, IEEE, and OSHA. All panels
shall contain the Underwriter's Laboratories label and shall be of approved
quality equal to Square D type QMB.
Safety Switches
1)
The Electrical Contractor shall furnish and install disconnect safety switches
where indicated on the drawings and elsewhere as specified.
2)
Disconnect safety switches shall be single-throw, nonteasible positive
quick-make, quick-break contact mechanism, fusible or non-fusible as
indicated, dual horsepower rated, dead front, and front accessible. The switch
handle shall physically indicate the ON and OFF positions. Such handles shall
also be able to accept a padlock having heavy duty industrial type shackles,
and be padlocked either in the ON or the OFF position. Covers shall be
interlocked with the switch handles to prevent opening in the ON position. An
interlock override device shall be provided to allow authorized personnel to
release the interlock for inspection purposes when the switch is in the ON
position. Switch ampere rating and number of poles shall be as indicated on
the drawings. Fuse clips shall be positive pressure cartridge type and shall
accommodate the classification of fuses as indicated on the drawings and/or as
specified in these specifications.
3)
The disconnect handle shall be attached to the box or enclosure base, and not
to the cover. Terminal lugs shall be Underwriter's Laboratories listed for copper
and aluminum cables and shall be front removable. All current carrying parts
shall be plated by electrolytic processes.
4)
Switch enclosures shall generally be NEMA 1 general purpose, code gauge
sheet steel. Switches located outdoors or in wet locations shall be NEMA 3R
raintight, code gauge galvanized steel and are identified on the drawings as
weatherproof (WP) or raintight (RT). Switches located in food service
preparation and dishwashing areas shall be NEMA 4 watertight, stainless steel.
PANELBOARDS AND SAFETY SWITCHES
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26 24 16-4
Switches located in hazardous areas shall have enclosures of the proper
NEMA type construction for the location and application and will be so indicated
on the drawings. All enclosures shall meet Underwriter's Laboratories Standard
98, and they shall be treated with a rust-inhibiting phosphate and finished in
gray baked enamel paint.
3.
5)
All switches shall be Underwriter's Laboratories, Inc., listed, and shall meet
Federal Specification WS-865c and NEMA Specifications KS1.
6)
Heavy duty switches shall have permanently attached arc suppressors hinged
or otherwise attached to permit easy access to line-side lugs without removal of
the arc suppressors.
7)
Switches used in circuits having a neutral conductor shall be provided with an
insulated groundable solid neutral terminal bar.
8)
The Electrical Contractor shall furnish and install fuses in all fusible disconnect
safety switches where required.
9)
Switches used on circuits under 250 volts AC shall be either general duty type
or heavy duty type. Switches used on circuit voltages between 250 and 600
volts AC shall be heavy duty type. General duty type switches shall be
horsepower rated for 250 volts AC and shall be equal to Square D General
Duty. Heavy duty type switches shall be horsepower rated for 250 volts AC/DC
or 600 volts AC, and shall be equal to Square D Heavy Duty.
EXECUTION
A.
Properly align Panelboards and Safety Switches and adequately support independent
of the connecting raceways. Provide all steel shapes and appurtenances necessary
for the support of the equipment.
B.
Where panelboards are installed during construction, place temporary covers over the
openings at all times, except when work is being performed therein.
C.
Where panelboard cabinets are flush mounted in an outside wall or fire wall, insulate
the back and sides of the cabinets with 1/2-inch rigid fiberglass insulation.
D.
Provide all flush-mounted panels with three (3) spare 1-inch conduits stubbed up
above the finished accessible ceiling for future wiring.
END OF SECTION
PANELBOARDS AND SAFETY SWITCHES
1424
26 24 16-5
SECTION 26 27 26 - WIRING DEVICES
1.
2.
GENERAL
A.
This section covers wiring devices, including floor boxes and outlets, and multi-outlet surface
metal raceways.
B.
Provide boxes and raceways as specified in Section RACEWAYS AND FITTINGS.
MATERIALS
A.
Switches shall be specification grade, quiet operating type rated at 20 amperes. Types listed
below:
Single Pole
Double Pole
Three Way
Four Way
Key-Single Pole
Pilot Light (1P)
A.H.
1221-I
1222-I
1223-I
1994-I
1991-L
2999-I
P&S
HUBBELL
PS20AC1-I CS1221-I
PS20AC2-I HBL1222-I
PS20AC3-I CS1223-I
PS20AC4-I CS1224-I
PS20AC1-L HBL1221-L
PS20AC1-CPL HBL1221-PLC
Single Pole
Double Pole
Three Way
Four Way
Key-Single Pole
Pilot Light (1P)
BRYANT
LEVITON
4901-I
1221-I
4902-I
1222-I
4903-I
1223-I
4904-I
1224-I
4901-L
1221-L
4901-PLR120 ------
Door switches shall be A.H. #4029, G.E. #SD-1, Perfect-Line (T&B) #DN-415, or
Bryant #2968.
B.
Receptacles in Administrative Offices, Storage Areas, Locker Rooms, etc., shall be
specification grade, grounding type rated at 20 amperes. Types listed below:
Duplex
Single
Ground Fault
A.H. P&S
HUBBELL
5352-I 5362-I CS 5352-I
5361-I 5351-I HBL 5361-I
GF5342I 2094-I GFR 5352-IA
Duplex
Single
Ground Fault
BRYANT LEVITON
5362-I 5362-I
5361-I 5361-I
GFR53FTI 6398-I
Receptacles in all Patient Rooms, Nurseries, Treatment Rooms, Corridors, and other
Patient Areas shall be Hospital grade, equal to Hubbell #8300-HI, Sierra P&S
#9300-HGI, G.E. #GE8300-2, Bryant #8300I, Leviton #5362-HGI, or Arrow-Hart
#5362HGI.
Receptacles in Pediatric areas shall be safety type, equal to Hubbell #SG-62-HI or
A.H. #TR83I.
Special purpose receptacles shall be furnished as called for on the drawings.
C.
WIRING DEVICES
Cover plates of the appropriate type and size shall be provided to accommodate all
outlets, unless otherwise required by the Architect, or unless for special devices or
1424
26 27 26-1
specific equipment supplied.
1)
Generally, all plates shall be Ivory in color, smooth thermoplastic, as
manufactured by Bell, Arrow-Hart, General Electric, P&S Sierra, Hubbell,
Bryant, Leviton, or Eagle.
2)
Receptacles in wet locations shall be installed with a hinged outlet
cover/enclosure clearly marked ASuitable For Wet Locations While In Use@ and
AUL Listed@. There must be a gasket between the enclosure and the mounting
surface, and between the hinged cover and mounting plate/base to assure
proper seal. This cover shall be equal to TayMac, specification grade.
3)
Receptacles and cover plates for emergency outlets shall be red.
4)
Device plates that will contain pilot lights shall be metal, smooth, jumbo type.
5)
Where devices are installed in exposed fittings or boxes, use Appleton "FSK"
covers.
6)
Install blank covers (of the same type as installed on devices in the same room
or area) on all fixtures or boxes without devices.
D.
Single pole incandescent dimmer switches, unless otherwise noted, shall be Lutron #
N-600, 120 volt, 600 watts. Where wattage is noted on the drawings, the dimmer
switch shall be Lutron # N-1000 (1000 watts), N-1500 (1500 watts), or N-2000 (2000
watts). All three-way incandescent dimmer switches, unless otherwise noted, shall be
Lutron # N-603P, 120 volt, 600 watts. Where noted 1000 watts on the drawings, the
dimmer switch shall be Lutron # N-1003P.
E.
Single pole fluorescent dimmer switches shall be Lutron # NF-10, NF-20, or NF-30.
Size per the manufacturer's recommendations. The dimming ballast(s) in the
associated light fixture(s) shall be approved by the dimmer manufacturer as
compatible with the dimmer switch.
F.
Clock outlets shall be specification grade grounding type rated at 15 amperes, equal
to A.H. #452-I, G.E. #4234-2, P&S #2122-I, Hubbell #5234, Bryant #2828GS, Leviton
#688-I, or Eagle #775V-BOX. All outlets for under-counter refrigerators shall be clock
outlets.
G.
Floor outlets shall be as follows:
1)
Duplex 120 volt receptacles shall be Hubbell #S-3625 with #B-2437 box.
2)
Floor telephone outlets shall be Hubbell #B-2437 box with #S-2825 cover, and
#S-3067 split nozzle.
3)
Floor outlets shall be provided with carpet flanges when installed in areas that
have a carpet finish. See Architectural Room Finish Schedule.
H.
Power Poles. Power poles shall be manufactured by Wiremold, Type 30TP-2. The
poles shall include two duplex receptacles with provision for telephone egress from
the bottom of the poles. The color of the pole shall be determined by the Architect
and shall come equipped with a fixed 2-inch chrome-plated pedestal. Receptacles
and device plates shall be as specified above.
I.
Multi-outlet Surface Metal Raceway
1)
WIRING DEVICES
All receptacle outlets for the multi-outlet power system shall be installed in
Wiremold 3000 as indicated on the drawings. Receptacles shall be as
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26 27 26-2
specified above. Duplex receptacle covers shall be Wiremold # G-3043BE and
# S4046DRJ. Finish shall be manufacturer's standard. Minimum length shall
be 36".
2)
3.
All covers, end fittings, couplings, receptacle plates and mounting hardware
shall be furnished as part of the system for a complete system.
EXECUTION
A.
Install all wiring devices indicated on the drawings, complete with coverplates.
B.
Position of outlets. Center all outlets with regard to paneling, furring and trim.
Symmetrically arrange outlets in the room. Satisfactorily correct outlets improperly
located or installed. Repair or replace damaged finishes. Set outlets plumb and
extend to the finished surface of the wall, ceiling or floor without projecting beyond
same.
C.
All wall switch outlets shall be on or in the wall adjacent to the lock side of the door.
Where glass partitions or other architectural features prevent such locations, switches
shall be located for maximum accessibility.
D.
Receptacles shall be installed with "U" ground at top.
E.
LABEL ALL RECEPTACLE COVERPLATES WITH THE PANELBOARD NAME AND
THE CIRCUIT NUMBER. THE LABELS SHALL BE BLACK LETTERS ON CLEAR
TAPE.
END OF SECTION
WIRING DEVICES
1424
26 27 26-3
SECTION 26 28 13 - FUSES
1.
2.
3.
GENERAL
A.
This section covers fuses for 600V or less.
B.
Fuses for ballast protection are covered in Section LIGHTING FIXTURES.
MATERIALS
A.
Provide fuses at all locations shown on the drawings and as required for supplemental
protection.
B.
Provide fuses manufactured by Bussmann Manufacturing Division of McGraw-Edison
Company.
C.
All fuses shall be current-limiting with 300,000 amperes interrupting capacity. Fuses
rated 600 amperes or less shall be UL Class RK1 or Class J. Fuses rated 601
amperes and larger shall be UL Class L.
D.
Fuses rated 601 amperes and larger shall have a minimum time-delay of 4 seconds at
500% rating and have pure silver links to insure maximum current limitation.
Bussmann KRP-C-(amp)SP low-peak fuses.
E.
Fuses rated 600 amperes or less for all loads shall be dual-element, UL Class RK1 or
Class J time-delay type. They shall be self-protecting from extraneous heat.
Bussmann LPN-RK-(amp)SP/LPS-RK-(amp)SP or LPJ-(amp)SP low-peak fuses.
F.
Fuses installed in individual motor circuits shall be sized at 125% of motor nameplate
current rating or the next standard fuse size. Where excessive ambient temperature,
high inertia motor loads or frequent "ON-OFF" cycling requires larger fuses, consult
the Engineer. Motor controllers shall be protected from short circuits to provide TYPE
2 protection. This level of protection shall allow NO DAMAGE to the controller under
low and high level fault conditions. Bussmann LPN-RK-(amp) SP/LPS-RK-(amp)SP
or LPJ-(amp)SP low-peak fuses, UL Class RK1 or Class J.
G.
Provide a spare fuse cabinet, located in the Electrical Equipment Room, model SFC
as manufactured by Bussmann Manufacturing Company.
EXECUTION
A.
Fuses shall not be installed until the Electrical installation is complete, including
thorough cleaning, tightening of all electrical connections, inspection of all grounding
conductors, and a megger test for adequate installation to ground of all circuits.
B.
Provide Bussmann all metal fuse reducers where the fuses are smaller than the fuse
clips.
C.
Twenty percent spare fuses (minimum of three of each size and type) shall be placed
in the spare fuse cabinet.
D.
A fuse identification label, showing type and size, shall be placed inside the door of
each switch.
END OF SECTION
FUSES
1424
26 28 13-1
SECTION 26 29 13 - MOTORS AND MOTOR CONTROLS
1.
2.
GENERAL
A.
This section covers motors and individual motor control devices.
B.
Motor Starter Panelboards are specified in Section PANELBOARDS AND SAFETY
SWITCHES.
MATERIALS
A. General
1)
Unless otherwise indicated, all motors 3/4 horsepower and larger shall be
connected for operation at 208 or 480 volts, 3 phase, and motors less than 3/4
horsepower shall be connected for operation at 115 volts, single phase.
2)
Motors. All motors shown on the drawings will be furnished and set in place
under the specific section where the equipment is specified.
3)
Control devices such as aquastats, firestats, freezestats, etc., are furnished
under the Mechanical Contract, and wiring from each such device to the motor
starter is included in the Electrical Contract, unless specifically indicated
otherwise.
4)
Control devices such as electric-pneumatic switches, thermostats, flow
switches, etc., are furnished under the Mechanical Contract, and wiring from
each such device to the motor starter is included in the Mechanical Contract,
unless specifically indicated otherwise.
5)
Motor Controls. Unless specifically indicated otherwise, provide all power
wiring, disconnects, starters, relays, pushbuttons, pilot lights, motor
connections, supports, and all appurtenances required for the safe and
satisfactory control of all motors.
6)
Refer to the Motor Control Schedule on the drawings for details.
B. Motor Starters
1)
Provide magnetic starters for three-phase motors. Provide manual starters for
single-phase motors unless otherwise indicated. NEMA 1 enclosure is
standard, but for enclosures exposed to the weather provide NEMA 3R
enclosures. Allen-Bradley starters are specified to establish quality and general
requirements. Comparable starters manufactured by Cutler-Hammer, General
Electric, Siemens, or Square D will be acceptable.
In each magnetic starter provide:
a)
Cover-mounted "Start" button, cover-mounted "Hand-Off-Automatic"
selector switch or "Start-Stop" pushbutton, and manual overload reset
button.
b)
Red "On" pilot light.
c)
Three overload relays properly sized for the actual motor nameplate
current and motor operating conditions.
MOTORS AND MOTOR CONTROLS
1424
26 29 13-1
Minimum of two auxiliary contacts plus those scheduled (maximum 4).
e)
Control transformer (unless otherwise indicated) for maximum control
voltage of 120 VAC complete with primary and secondary overcurrent
and short circuit protection.
2)
Manual Motor Starters. Provide Allen-Bradley Bulletin 600, single pole,
complete with red "On" pilot light, toggle switch, overload relay, and manual
overload reset. Provide flush mounting with stainless steel plate in finished
areas and surface mounting in unfinished areas. The starter shall have a
minimum rating of 1 horsepower at 240 VAC.
3)
Full Voltage Magnetic Starter. Provide Allen-Bradley Bulletin 509,
non-reversing, sized for the horsepower and current rating of the motor. The
minimum size shall be NEMA size 1.
4)
Combination Starters
5)
3.
d)
a)
For indoor application, provide Allen-Bradley Bulletin 512 with fused or
non-fused disconnect as indicated.
b)
For outdoor application, provide Allen-Bradley Bulletin 1232 (NEMA 3R)
with fused or non-fused disconnect as indicated.
Remote controls. Provide Allen-Bradley Bulletin 800T pushbuttons and
selector switches, oil tight type, with red "ON" pilot light. Provide flush
mounting with stainless steel plate in finished areas and surface mounting in
unfinished areas. Provide momentary "Start-Stop" buttons or maintained
contact three-position "Hand-Off-Automatic" selector switch, as indicated.
EXECUTION
A.
Coordination. Coordinate all details pertaining to the motor control equipment with the
mechanical and temperature control installation. This includes, but is not limited to:
motor size, coordination of motor starter coil voltage ratings, verification and
coordination of mechanical control device voltage and amp ratings, and coordination
of pilot control devices such as momentary contact versus maintained contact.
B.
All Temperature Control Wiring (below 100 VAC) will be provided by the Mechanical
Contractor. All interlock wiring (100 VAC and above) shall be provided by the
Electrical Contractor, unless otherwise indicated. See the Motor Schedule on the
plans for detailed requirements. In general, the interlock wiring is not shown on the
plans, but is called out in the Motor Schedule. The Electrical Contractor is responsible
for furnishing and installing all such control wiring as indicated on the Motor Schedule,
but not shown on the plans. The Electrical Contractor is also responsible for the
proper electrical operation of all items on the Motor Schedule, such as correct rotation
of motors, correct heater sizes, etc.
C.
Connections. Provide all connections to motors, and other equipment subject to
vibration, with a flexible conduit connection. Use jacketed weatherproof flexible
conduit, equal to Sealtite, for motors installed in a damp or wet location. Flexible
conduit shall be installed in sufficient length and with enough slack to preclude
transmission of vibration.
D.
All starters shall be installed less overload heaters. The Electrical Contractor shall
review the motor nameplates for the full load amps. When all nameplate full load
amps have been recorded, the overload heaters shall be ordered and installed. Any
MOTORS AND MOTOR CONTROLS
1424
26 29 13-2
starters that are installed with overload heaters prior to the nameplate full load amps
being available shall, if required, be changed by the Electrical Contractor at no
additional cost to the Owner.
END OF SECTION
MOTORS AND MOTOR CONTROLS
1424
26 29 13-3
SECTION 26 50 00 - LIGHTING FIXTURES
1.
2.
3.
4.
GENERAL
A.
The Electrical Contractor shall furnish and install new lighting fixtures of recent
manufacture as shown on the drawings and herein specified.
B.
All fixtures and components shall be U.L. listed and meet all applicable national and
local code requirements for the particular application. All fixtures shall bear the IBEW
label.
FIXTURES
A.
Lighting equipment is shown in the fixture schedule on the drawings to establish
general requirements. The fixture manufacturers' catalog numbers are not to be
construed as all inclusive. Approved equal light fixtures by other manufacturers may
be substituted. All substitutions must be approved by the Engineer a minimum of ten
(10) days before bids are due. The Electrical Contractor shall furnish and install all
accessories or hardware required for a complete installation. Light fixtures shall be
equipped with proper accessories, lenses, louvers, reflectors, shields, hangers, clips,
frames, lamps, ballasts, and other essentials for proper installation in or upon walls,
ceilings or other construction features, and shall be properly painted for protection and
preservation appropriate to the place installed.
B.
The Electrical Contractor shall refer to the Room Finish Schedule(s) on the
Architectural drawings to verify the type of ceiling construction. The Electrical
Contractor shall be responsible for ordering fixtures with the proper hardware for
installation in or on the specified ceiling.
C.
Where the drawings indicate that the lamps of "open" type fixtures (strip lights) are to
be provided with "Lamp safety sleeve", the Electrical Contractor shall furnish and
install crystal clear unbreakable plastic sleeves over the lamps including end caps,
along with safety guard tubeholders. Sleeves shall be non-yellowing, non-chipping,
and non-creasing and shall be Malcolite "Toob-Guard" Type TG series. Thermoplastic
Processes "Arm-A-Lite", House-O-Lite, or approved equal. Safety guard tube holders
shall be Thermoplastic Process Type ASG-T12, or 'tubeloc', or approved equal.
BALLASTS
A.
Ballasts for fluorescent fixtures shall be Motorola electronic type, Advance Centium, or
approved equal.
B.
All outdoor fluorescent and high intensity discharge light fixtures shall be furnished
with cold weather ballasts, capable of starting in temperatures down to -20 degrees F.
LAMPS
A.
All lamps shall be furnished and installed by the Electrical Contractor as part of the
work herein, and shall be in proper operating condition when turned over to the
Owner.
B.
Unless otherwise noted, incandescent lamps shall be "Inside Frosted".
C.
Unless otherwise noted, fluorescent lamps shall be T-8 (octron), color 4100K.
D.
All lamps shall be as manufactured by General Electric, Osram Sylvania, or Philips.
LIGHTING FIXTURES
1424
26 50 00-1
5.
EXECUTION
A.
All lighting fixtures shall be installed in accordance with manufacturer's
recommendations, instructions contained herein or on the plans, and field conditions.
B.
Locations of fixtures, unless specifically dimensioned, may be scaled from the plans
and adjusted as required within plus or minus 12 inches to meet job conditions.
C.
All necessary accessories required for the support or mounting of fixtures shall be
included. Where necessary, bridging between structural members shall be provided.
D.
All recessed fixtures shall be mounted with flanges tight to the finished ceilings.
Fixtures shall be seismic mounted, adequately supported by the ceiling superstructure
or the building structural system. Recessed incandescent fixtures may be supported
directly from plaster ceilings using plaster frames. All recessed fluorescent fixtures
mounted in lay-in ceilings shall be fastened to the adjacent T-bars by approved clips
such as Caddy #515. Provide seismic supports in compliance with BOCA seismic
requirements.
E.
Surface and suspended fixtures shall be securely seismic mounted to the structural
system, the ceiling superstructure, or to supporting members provided as specified
under the "General Conditions" of this specification. Fixtures weighing less than 30
pounds may be supported directly from plaster ceilings. Incandescent fixtures
weighing less than 10 pounds may be supported from the outlet. All surface fixtures
shall be mounted in proper alignment with the ceiling. All suspended fixtures shall be
mounted from supports hung at right angles to the plane of the finished floor. Aligner
type hangers shall be applied on sloping ceilings. Provide seismic supports in
compliance with BOCA seismic requirements.
F.
Wall mounted fixtures shall be securely mounted with a minimum of two screws to the
wall or to studs or framing within the wall to prevent the possibility of movement or
misalignment.
G.
All continuous runs of fluorescent fixtures passing through expansion joints shall be
separated mechanically; electrical connections between such fixtures shall be in
flexible conduit.
H.
Where remote mounted ballast installation is indicated, ballasts shall be mounted in a
ventilated enclosure, which shall be secured to the building structure with vibration
isolating mountings. All connections shall be thru flexible conduit. Ballasts shall be
mounted in a manner which will promote heat transfer to the housing.
I.
All adjustable fixtures shall be aimed as directed by the Architect and/or Engineer.
J.
Where lighting fixtures are furnished by others, the Electrical Contractor shall receive,
store, unpack, assemble, connect, install, and shall be responsible for these fixtures.
K.
Indoor high intensity discharge fixtures shall be individually protected by a GMF or
GLR fuse installed in a HLR fuseholder for voltages up to 300 volts, and by a KTK
fuse installed in a HPC fuseholder for voltages over 300 and up to 600 volts. Fuses
and fuseholders shall be sized and installed by the light fixture manufacturer.
L.
Outdoor high intensity discharge light fixtures shall be protected with type KTK fuses
having 100,000 amperes interrupting capacity, sized in accordance with the
recommendation of the ballast manufacturer and installed in type HEB waterproof
fuseholders by the Electrical Contractor.
LIGHTING FIXTURES
1424
26 50 00-2
M.
In remodel area rooms where existing light fixtures are to be relocated or where new
light fixtures are to be added, the existing light fixtures are to be cleaned and
relamped. All broken lenses shall be replaced.
END OF SECTION
LIGHTING FIXTURES
1424
26 50 00-3