Taylor County
July 2011
SECTION 16120 – WIRES AND CABLES
PART 1 - GENERAL
1.1
SCOPE OF WORK
A.
1.2
Furnish, install and test all wire, cable and appurtenances as specified herein or as shown on the
Drawings.
GENERAL REQUIREMENTS
A.
Wires and cables shall meet all the applicable requirements of the NEC and UL for the type of
insulation, jacket, and conductor specified or indicated.
B.
All conductors shall be copper.
C.
Wire and cable manufactured more than 12 months before delivery to the job site shall not be
used.
1.3
APPLICATIONS
A.
Wire in dry locations shall by Type THHN and for wet locations shall be Type THWN unless
noted otherwise on the Drawings.
B.
Cable for direct burial applications shall be Type UF.
C.
Power wire and/or cable for aerial or exposed installation will be Type SO for hard usage.
D.
Instrument wire for DC signals shall have an overall shield and shall be installed separate from
480VAC and 120/240VAC circuits.
1.4
IDENTIFICATION
Conductor identification shall be by color coded insulation and wire labels.
A.
Power wiring with black insulation shall be color coded with colored plastic adhesive backed
tape in each enclosure where taps, splices or terminations are made.
Power Wiring Color Codes:
120/240 Volts AC System C
Phase A
Phase B
Phase C
Neutral
Ground
WIRES AND CABLES
Black
Red
Blue
White
Green
16120 - 1
Taylor County
July 2011
480 Volts AC System C
Phase A
Phase B
Phase C
Neutral
Ground
Brown
Orange
Yellow
White
Green
Green and White shall not be used for any other purpose.
B.
Control wiring shall be identified by color coded insulation and an adhesive wire label
corresponding to the wiring diagrams.
Control Wiring Color Codes C:
120 VAC Discrete Control
24 VAC Discrete Control
DC Discrete Control
Red
Gray
Blue
The adhesive wire markers shall be pre-printed cloth wrap-on type, written adhesive type or
shrink-on style.
1.5
MINIMUM SIZES
A.
Except for control and signal leads, no wire smaller than No. 14 AWG shall be used for AC
circuits.
B.
DC control circuits shall use No. 18 AWG, unless noted otherwise.
PART 2 - PRODUCTS
2.1
GENERAL
A.
Wires and cables shall be of annealed, 98% conductivity, soft drawn copper unless indicated
otherwise on the Drawings or in these specifications.
B.
All conductors shall be stranded.
2.2
600 VOLT WIRE AND CABLE
A.
Wire shall be Type THHN or THWN insulated copper conductors as manufactured by
Anaconda Wire and Cable Co., Rome Cable Corp., Okonite Co., Southwire or equal.
B.
Cable shall be type TC with sunlight resistant PVC jacket overall and type XHHW or THHN
insulated conductors and shall be manufactured by Anaconda Wire and Cable Co., Rome Cable
Corp., Okonite Co., Southwire or equal.
WIRES AND CABLES
16120 - 2
Taylor County
2.3
July 2011
300 VOLT SIGNAL CABLE
A.
Signal cable shall have a minimum rating of 300 volts. The cable shall consist of pairs of triads
of seven(7) stranded copper conductors each with primary insulation of PVC with nylon. The
conductors shall have an overall shield of aluminum-mylar with a drain wire. The overall cable
jacket shall be sunlight resistant PVC.
The cable shall be manufactured by Belded (Cooper Ind.), Rome Cable Co., or approved equal.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
All conductors shall be carefully handled to avoid kinks or damage to insulation.
B.
Lubrications shall be used, if required, to facilitate wire pulling. Lubricants shall be UL
approved for use with the insulation specified.
3.2
TESTS
A.
All 600 Volt wire insulation on motor conductors shall be tested with a “megger” after
installation. Tests shall be made at not less than 500 volts.
END OF SECTION 16120
WIRES AND CABLES
16120 - 3