HomeMy WebLinkAboutSpecification Section - 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES.pdfLOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 1
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SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes the following:
1. Building wires and cables rated 600 V and less.
2. Connectors, splices, and terminations rated 600 V and less.
1.2 ACTION SUBMITTALS
A. Product Data: For each type of product indicated.
1.3 INFORMATIONAL SUBMITTALS
A. Field quality-control test reports.
1.4 QUALITY ASSURANCE
A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
B. Comply with NFPA 70.
PART 2 – PRODUCTS
2.1 CONDUCTORS AND CABLES
A. Aluminum and Copper Conductors: Comply with NEMA WC 70.
B. Conductor Insulation: Comply with NEMA WC 70 for Types THW, THHN-THWN,
XHHW, UF, USE, and SO.
C. Multiconductor Cable: Comply with NEMA WC 70 for armored cable, Type AC; metal- clad
cable, Type MC; mineral-insulated, metal-sheathed cable, Type MI; nonmetallic- sheathed
cable, Type NM; Type SO; and Type USE with ground wire.
2.2 CONNECTORS AND SPLICES
A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
B. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. AFC Cable Systems, Inc.
2. Hubbell Power Systems, Inc.
3. O-Z/Gedney; EGS Electrical Group LLC.
4. 3M; Electrical Products Division.
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 2
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5. Tyco Electronics Corp.
6. Or approved alternate
C. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type,
and class for application and service indicated.
PART 3 - EXECUTION
3.1 CONDUCTOR MATERIAL APPLICATIONS
A. Feeders: Copper for feeders smaller than No. 1/0 AWG; copper or aluminum for feeders No.
1/0 AWG and larger. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.
B. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and
larger.
3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND
WIRING METHODS
A. Service Entrance: Type THHN-THWN, single conductors in raceway or Type XHHW,
single conductors in raceway
B. Exposed Feeders: Type THHN-THWN, single conductors in raceway; Armored cable, Type
AC; or Metal-clad cable, Type MC.
C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces with a Thermal Barrier of
Material with Minimum 15 Minute Finish Rating: Type THHN-THWN, single conductors in
raceway; Armored cable, Type AC; Metal-clad cable, Type MC; Mineral-insulated, metal-
sheathed cable, Type MI.
D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN- THWN,
single conductors in raceway or Type XHHW, single conductors in raceway.
E. Exposed Branch Circuits, Including in Crawlspaces: Type THHN-THWN, single conductors in
raceway; Armored cable, Type AC; Metal-clad cable, Type MC; Mineral-insulated, metal-
sheathed cable, Type MI.
F. Branch Circuits Concealed in Ceilings, Walls, and Partitions with a Thermal Barrier of
Material with Minimum 15 Minute Finish Rating: Type THHN-THWN, single conductors in
raceway; Armored cable, Type AC; Metal-clad cable, Type MC; Mineral- insulated, metal-
sheathed cable, Type MI.
G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground:
Type THHN-THWN, single conductors in raceway.
H. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless-
steel, wire-mesh, strain relief device at terminations to suit application.
I. Class 1 Control Circuits: Type THHN-THWN, in raceway.
J. Class 2 Control Circuits: Type THHN-THWN, in raceway.
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519 - 3
THE EDUCATION CENTER PROJECT NO. 122175.00
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H. Feeders concealed in ceilings, w alls, partitions, and c rawlspaces with a thermal barrier of
material with less than 15 minute finish rating shall be considered exposed and will meet the
requirements of exposed feeders as described above.
I. Branch circuits concealed in ceilings, walls, and partitions with a thermal barrier of
material with less than 15 minute finish rating shall be considered exposed and will meet the
requirements of exposed branch circuits as described above.
3.3 INSTALLATION OF CONDUCTORS AND CABLES
A. Conceal cables in finished walls, ceilings, and floors, unless otherwise indicated.
B. Use manufacturer-approved pulling compound or lubricant where necessary; compound used
must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended
maximum pulling tensions and sidewall pressure values.
C. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will
not damage cables or raceway.
D. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and
follow surface contours where possible.
E. Support cables according to Division 26 Sections "Hangers and Supports for Electrical
Systems."
F. Identify and color-code conductors and cables according to Division 26 Section "Identification
for Electrical Systems."
G. Tighten electrical connectors and terminals according to manufacturer's published torque-
tightening values. If manufacturer's torque values are not indicated, use those specified in
UL 486A and UL 486B.
H. Make splices and taps that are compatible with conductor material and that possess equivalent
or better mechanical strength and insulation ratings than unspliced conductors.
1. Use oxide inhibitor in each splice and tap conductor for aluminum conductors.
I. Wiring at Outlets: Install conductor at each outlet, with at least 6 inches (150 mm)
of slack.
3.4 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS
A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply
with requirements in Division 26 Section "Sleeves and Sleeve Seals for Electrical Raceways
and Cabling."
3.5 FIRESTOPPING
A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore
original fire-resistance rating of assembly according to Division 07 Section "Penetration
Firestopping."
3.6 FIELD QUALITY CONTROL
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THE EDUCATION CENTER PROJECT NO. 122175.00
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A. Perform tests and inspections and prepare reports.
B. Tests and Inspections:
1. After installing conductors and cables and before electrical circuitry has been energized,
test service entrance and feeder conductors for compliance with requirements.
C. Remove and replace malfunctioning units and retest as specified above.
END OF SECTION 260519