Download Section 16120 - Wires and Cables, 600 Volt

SECTION 26 12 00 – BUILDING WIRE AND CABLE, 600 VOLT
PART 1: GENERAL
1.01
1.02
DESCRIPTION:
A.
General provisions and other electrical systems are specified in other Sections of Division 26.
B.
This Section covers building wire, cable, and associated connection devices and accessories rated for 600
V.
C.
Wiring for communications and alarm systems is covered in other Sections of Division 26.
D.
Commissioning is specified in Section 26 00 90, Commissioning. This Section includes responsibilities
and obligations in support of the commissioning process specified therein.
QUALITY ASSURANCE:
A.
Specified conductor size refers to American Wire Gauge (AWG).
B.
Conform to the following:
1.
NECA/AA 104-2006.
2.
NECA 120-2006.
3.
NFPA 70-2005.
PART 2: PRODUCTS
2.01
GENERAL:
A.
2.02
Conductors #10 AWG or smaller shall have outer covering color-coded to indicate phase, neutral, and
ground conductors. Colors shall be as follows:
Conductor
208/120 V Systems
480/277 V Systems
Phase A
Phase B
Phase C
Neutral
Ground
Isolated ground
Black
Red
Blue
White
Green
Green/Yellow
Brown
Orange
Yellow
Gray
Green
Green/Yellow
CONDUCTORS:
A.
Conductors shall be copper except as otherwise specified herein. Sizes indicated on the Drawings or
specified herein refer to copper conductor sizes.
B.
Conductors shall be a minimum of #12 AWG unless otherwise specified herein. Conductors #8 AWG and
larger shall be stranded.
C.
Insulation shall be type THHN/THWN-2 or XHHW-2, 600 V, rated at 90C.
D.
Luminaire wiring shall be high temperature fixture or machine tool wire.
E.
Lay-in fluorescent luminaires equipped with UL listed 72" flexible metal conduit and connector assemblies
shall be prewired with minimum #18 AWG conductors in the flexible assembly.
F.
Conductors shall have size, grade of insulation, voltage, and manufacturer permanently marked on the
outer cover at intervals not exceeding 24".
G.
Manufacturer: Aetna, Colonial, Encore, Pirelli, Southwire, or United Copper Industries.
ETB #0914
26 12 00 - 1
North Central Advanced Technology Center
WV-CTCS
SECTION 26 12 00 – BUILDING WIRE AND CABLE, 600 VOLT
2.03
2.04
2.05
2.06
2.07
CONNECTION DEVICES FOR COPPER CONDUCTORS:
A.
For splices and taps on conductors #10 AWG and smaller, connection devices shall be twist-on or crimp
pressure type.
B.
Splices, taps and bus bar terminations of conductors #8 AWG and larger shall be made with compression,
crimp type connection devices or mechanical pressure connection devices other than split bolt type.
C.
Manufacturer: 3M, Ideal, Panduit, or Thomas & Betts.
ALUMINUM AND COPPER-CLAD CONDUCTORS:
A.
Aluminum and copper-clad conductors may be used as a substitute for copper conductor sizes #2/0 AWG
and larger. The conductor size shall be increased so that the ampacity of the aluminum or copper-clad
conductors shall be equal to or greater than the ampacity of the copper conductors specified herein.
B.
Aluminum conductor material shall be Aluminum Association 8000 series electrical grade aluminum alloy.
C.
Manufacturer: Alcan, or Southwire.
ALUMINUM AND COPPER-CLAD CONNECTION DEVICES:
A.
Splices, taps, and terminations shall be made with compression devices specifically designed for
aluminum conductors, requiring a hydraulically operated compression tool equipped with dies specifically
designed for each conductor size involved.
B.
Manufacturer: 3M, Ideal, Panduit, or Thomas & Betts.
METAL-CLAD CABLE:
A.
Metal-clad cable shall have a steel or aluminum sheath of interlocking tape, or a smooth or corrugated
tube. Grounding conductors shall be insulated.
B.
Connectors shall be insertion or totally enclosed clamp type, galvanized malleable iron or steel, with
insulated throats.
C.
Camlock type connectors shall not be used.
D.
Manufacturer: AFC Cable Systems, Alflex, or Southwire.
ACCESSORIES:
A.
Electrical tape: high voltage splicing, filler, and vinyl plastic electrical type.
1.
B.
Manufacturer: 3M, Anixter Brothers, or Plymouth.
Connection covers: plastic type.
1.
Manufacturer: Ideal, Panduit, or Thomas & Betts.
C.
Pulling compound: shall not deteriorate conductors or insulation.
D.
Identification tape: color-coded, self-adhering, 1" wide type.
PART 3: EXECUTION
3.01
INSTALLATION - GENERAL:
A.
Install in each raceway a minimum of 3 #12 AWG conductors, including ground conductors, unless
otherwise specified herein or indicated on the Drawings.
B.
Branch Circuit Homeruns:
1.
ETB #0914
For 120 V, 20 A circuits 75' or greater provide #10 AWG homerun conductors.
26 12 00 - 2
North Central Advanced Technology Center
WV-CTCS
SECTION 26 12 00 – BUILDING WIRE AND CABLE, 600 VOLT
2.
3.02
3.03
C.
Install wiring, cables, and connection devices in accordance with the manufacturer’s instructions.
D.
Install conductors in raceways unless specifically indicated otherwise on the Drawings.
E.
Conductors in one raceway shall be installed at one time, using pulling compound.
F.
Conductors in panelboards, switchboards, and control cabinets shall be grouped and laced with nylon tie
straps.
G.
No more than three branch circuit homeruns shall be installed in a conduit.
H.
Connect each circuit of a multicircuit home run to a different phase at the panelboard.
I.
Single-phase line-to-neutral branch circuits shall be provided a separate dedicated neutral conductor for
each branch circuit. Multiwire branch circuits with shared or common neutrals are not acceptable.
J.
Where multiple single-phase line-to-neutral branch circuits are spliced within a common box or enclosure
each phase and neutral conductor shall be identified with corresponding panel and circuit number at each
splice.
K.
Support cable risers. See Section 26 19 00, Supporting Devices for specific supporting methods.
L.
Termination of more than 1 conductor in a single terminal is not acceptable except where the terminal is
approved by the manufacturer for such application.
COPPER CONNECTION DEVICES:
A.
Dies for compression tools shall be as recommended by the manufacturer for each conductor size
involved.
B.
Tighten mechanical connectors according to the manufacturer's torquing requirements.
C.
Connectors shall exert positive pressure to the conductors.
CONNECTIONS TO MECHANICAL EQUIPMENT:
A.
3.04
For 277 V, 20 A circuits 150' or greater provide #10 AWG homerun conductors.
Locations of motors, equipment, and apparatus indicated on the Drawings are approximate and
connections shall be made to such equipment where actually installed.
ALUMINUM AND COPPER-CLAD CONDUCTORS:
A.
Aluminum and copper-clad conductors shall not be connected to terminals of rotating equipment or
building distribution step-down transformers, and shall not be used for connection to chiller motor
controllers.
B.
Aluminum and copper-clad conductors shall be installed, terminated, spliced and joined as described in AA
AWG-51-1997 and in accordance with manufacturer's recommendations.
C.
Apply a high temperature oxide inhibitor compound on aluminum or copper-clad splices, taps, and
terminations.
D.
Conduit sizes shall be increased to accommodate larger conductors installed in lieu of copper.
E.
Terminations shall be made with compression lugs. Where parallel runs are installed, separate lugs shall
be installed on each conductor.
F.
Where the physical construction of the device, such as a molded case circuit breaker, prohibits the direct
connection of the compression lug, the conductor shall be terminated in a compression equipment
adaptor.
ETB #0914
26 12 00 - 3
North Central Advanced Technology Center
WV-CTCS
SECTION 26 12 00 – BUILDING WIRE AND CABLE, 600 VOLT
3.05
JOINT COVERING:
A.
3.06
3.07
Cover electrical connections with successive layers of high voltage filler putty or splicing tape, varnished
cambric tape, and vinyl plastic electrical tape to cover rough edges and to provide insulation equal to that
of conductor insulation.
IDENTIFICATION:
A.
Conductors larger than #10 AWG shall be identified at each end with the same color-coding scheme
specified herein for smaller conductors.
B.
Switch legs shall be color-coded the same as phase conductors.
METAL-CLAD CABLE:
A.
Metal-clad cable shall only be used for branch circuit wiring between wiring devices and between
luminaires downstream (away from the branch circuit panel) of a junction box located not more than 10'
(circuit length) upstream (toward the branch circuit panel) of the first wiring device or luminaire on that
circuit. Raceways extended from this junction box to the branch circuit panel shall comply with the
requirements of Section 26 11 00, Raceways.
B.
Install in hollow spaces of columns and walls, and above suspended ceilings for branch circuit wiring.
C.
Metal-clad cable shall not be used for exposed installations, including mechanical and electrical rooms.
END OF SECTION 26 12 00
ETB #0914
26 12 00 - 4
North Central Advanced Technology Center
WV-CTCS