Download 16120MST.94

SECTION 16120
WIRES AND CABLES
PART 1 - GENERAL
1.01 DESCRIPTION
A.
This Section describes specific requirements, products, and methods of execution relating to wire and cable, 600
volts or less, approved for use on this Project.
1.02 QUALITY ASSURANCE
A.
All conductors shall be sized according to the American Wire Gauge (AWG). Stranding, insulation, rating, and
geometrical dimensions shall conform to Underwriters' Laboratories (UL) Standards.
1.03 PRODUCT DELIVERY, STORAGE, AND HANDLING
A.
Deliver materials and equipment to project site in manufacturer's original packaging with labeling showing product
name, brand, model, project name, address and Contractor's name. Store in a location as agreeable with the Chief
of Plant Operations; secure from weather or accidental damage.
PART 2 - PRODUCTS
2.01 LABELING
A.
B.
Conductors shall be delivered to the job site plainly marked or tagged on 24 inch centers as follows:
1.
Underwriters' Laboratories (UL) Label.
2.
Gauge.
3.
Voltage.
4.
Kind of Insulation.
5.
Name of Manufacturer.
6.
Trade Name.
Conductor labels shall be with PVC tubing with machine printed black marking. Tubing shall be sized to fit
conductor insulation. Adhesive strips are not acceptable.
2.02 INSULATION
A.
For secondary power, lighting and control circuits, use wire with following types of insulation at the specified
locations:
1.
In Ordinary Dry and Wet Locations: Type XHHW; or Type THHN in dry locations and Type THWN in wet
locations.
2.03 CONDUCTORS
A.
Mar. 2012
Unless specifically noted otherwise herein, all conductors for general wiring shall be a minimum of 98 percent
conductivity, soft drawn copper. Conductors No. 10 AWG and smaller shall be solid; conductors No. 8 AWG and
larger shall be stranded.
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B.
Where suitable for the application, and allowed by the CEC, Type MC metal-clad cables may be used. Type MC
cable shall meet the following requirements:
1.
2.
2.
3.
4.
THHN/THWN insulation over #12 copper stranded conductors
Aluminum interlocked armor metal-cladding
600V, 90°C rated (dry), UL classified for through-firewall penetration up to 3 hours
Comply with and installed in accordance with CEC ’07 Article 330
AFC Cable Systems 2100 series or approved equal.
2.04 PULLING LUBRICANT
A.
Wire pulling lubricant shall be a UL or Factory Mutual approved wire pulling compound.
2.05 WIRING MATERIALS
A.
Connectors for Copper Conductors No. 10 AWG and Smaller:
1.
Preinsulated Spring Pressure Type: Scotchlok Types Y, R, G and B; Ideal "Wing Nut"; T&B Series PT, or
equal.
2.
Splice Cap Type: Uninsulated metal cap applied with proper indenter tool which provides deformation of cap
in 2 directions at right angles to each other. Buchanan, or equal.
B.
Connectors and Lugs for Copper Conductors No. 8 AWG and Larger: Pressure or compression type, Burndy,
Dossert, T&B, or equal.
C.
Lugs for Parallel Conductors: Provide multiple lugs where parallel conductors are used.
D.
Watertight Splice Kits: Epoxy resin type, suitable for the type, size and number of conductors being spliced.
E.
Electrical Tapes:
F.
1.
Friction Tape: Per ASTM D-69.
2.
Rubber Tape: 0.030 inch thick, per ASTM D-119.
3.
Plastic Tape: .007 inch thick, minimum, 3M Co. "Scotch" No. 33, Plymouth "All Weather" No. 4453, or
equal.
Wire Markers: Self-adhesive, wrap around, cloth type, E-Z Code, Brady "Perma Code", or equal.
PART 3 - EXECUTION
3.01 WIRING METHODS
A.
B.
General Requirements:
1.
Use No. 12 AWG or larger wire for lighting and power circuits and No. 14 AWG or larger wire for control
circuits, unless smaller wire is specified or shown.
2.
Unless otherwise specified or shown, leave at least 9 inches of free conductors at each unconnected outlet.
Tape free ends of conductors and coil neatly in outlet box.
Splicing and Termination of Conductors:
1.
Mar. 2012
Conductors No. 10 AWG and Smaller:
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2.
a.
Twist conductors together to be electrically and mechanically secure, and solder, or join conductors
together by means of pre-insulated spring pressure connectors, or non-insulated splice caps applied with
proper indenter tool designed for the specific type of cap used. Twist conductors together before applying
splice caps.
b.
Insulate splices, joints and free ends of conductors with insulation equivalent to that of conductors by
taping with rubber and friction tapes, or with high dielectric strength plastic tape.
c.
If splice caps are used, plastic insulating caps may be used. After applying splice caps, use insulating caps
rated for the temperatures to which they may be subjected, and install as recommended by the
manufacturer.
Conductors No. 8 AWG and Larger:
a.
Splice and terminate conductors by means of connectors and terminal lugs.
b.
Do not use split bolt type connectors.
c.
After initial set has been taken, retighten all pressure type connectors and lugs.
d.
Insulate all splices, joints, and free ends of conductors as specified under Subparagraph 3.01 B.1.b.
above.
e.
Where aluminum lug is bolted with steel or copper bolt, use Belleville spring washer and flat washer as
follows:
1) Belleville Washer: Either hardened and tempered steel, tin plated, or stainless steel.
2) Flat Washer: Mild steel, tin plated, and slightly larger than Belleville washer.
3) Low Voltage Control Wiring: Splice by twisting conductors together so as to be electrically and
mechanically secure, then solder. Other methods may be used if specifically approved by the State.
4) Underground Splices: Conductor and cable splices installed underground in manholes, pullholes and
similar locations, shall be made watertight. Splices for lead-sheathed cables shall be wiped lead
joints. Approved splice kits may be used for conductors and cables other than lead- sheathed.
C.
Color Coding:
1.
Mar. 2012
Color code all secondary branch circuit and feeder conductors as follows:
a.
Two Wire Grounded System: One black, one white (neutral).
b.
Three wire, Single Phase, Grounded System: One black, one red, one white (neutral).
c.
Three Wire, 3 phase, Ungrounded Delta System: One Black, one red, one blue.
d.
Four Wire, 3 Phase Grounded Wye or Delta System: One black, one red, one blue, one white (neutral).
For 4 wire delta system, phase conductor with higher voltage to ground shall be red.
2.
Use green color for any conductor intended solely for equipment grounding, unless it is bare.
3.
Use wire with insulation of required color. For other types of wire, which may not be available in specified
colors, use self-adhesive wrap-around cloth type markers of solid colors to color code conductors.
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D.
4.
Where wire markers are used for color coding, mark each conductor at all accessible locations (panelboards,
junction boxes, pullboxes, auxiliary gutters, outlets, switches, control centers, etc.).
5.
Control wiring must be of colors different from power wiring when installed in the same raceway, or else be
marked as specified below.
6.
In general, use same color throughout a given system for any signal or control wires performing the same
function.
Marking: In addition to color coding, identify circuits with premarked, self-adhesive wrap-around cloth type
markers, as follows:
1.
Where 2 or more branch circuits or control wires of same color pass through or terminate in same accessible
location (panelboard, junction box, outlet box, gutter, pullbox, etc.), mark each appropriately to distinguish
from others of same color. If wires are branch circuit conductors, mark with the correct panel and circuit
number. If more than one white (neutral) conductor is present, mark each with all related circuit numbers. For
control wires, use State approved schedules or wiring diagrams.
2.
Even if completely identified by color coding, mark all signal and control wires at all termination points in
accordance with State approved schedules or wiring diagrams.
3.02 CLEANING
A.
All debris and moisture shall be removed from raceways, boxes, and cabinets before installing wire or cable.
3.03 PULLING
A.
No oil, grease, or similar substances shall be used to facilitate the pulling in of conductors. Use a specifically
approved wire pulling compound.
B.
No wire or cable shall be pulled in until all construction which might damage insulation or fill conduit with foreign
material is completed.
C.
Wire shall be pulled into conduits with care to prevent damage to insulation. Use basket pulling grips to avoid
slipping of insulation on conductors. Nylon, polypropylene or hemp rope, or other "soft" surfaced cable must be
used for pulling in conduit other than steel.
D.
Do not use blocks, tackle, or other mechanical means to pull wires No. 8 AWG, or smaller.
3.04 FIELD QUALITY CONTROL
A.
Operating Test: After installation has been completed, Contractor shall conduct an operating test. The equipment
shall be demonstrated to operate in accordance with the requirements of this Section of the specifications.
Contractor shall furnish necessary instruments and personnel required for test.
END OF SECTION
Mar. 2012
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