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SECTION 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
B.
ASTM International
1.
C.
ASTM A 53/A 53M: Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated
Welded and Seamless
Code of Federal Regulations
1.
D.
29 CFR - Labor, Chapter XVII - Occupational Safety and Health Administration,
Department of Labor, Part 1910 - "Occupational Safety and Health Standards," Subpart A
- "General," Section 1910.7 - "Definition and Requirements for a Nationally Recognized
Testing Laboratory." 2003.
InterNational Electrical Testing Association
1.
E.
NETA Acceptance Testing Specification: Acceptance Testing Specifications for
Electrical Power Distribution Equipment and Systems
National Electrical Manufacturers Association
1.
F.
NFPA
1.
G.
1.2
UL 486A-98: Wire Connectors and Soldering Lugs for Use with Copper Conductors
UL 486B-98: Wire Connectors for Use with Aluminum Conductors
SUMMARY
This Section includes the following:
1.
2.
B.
NFPA 70: National Electrical Code
Underwriters Laboratories Inc.
1.
2.
A.
NEMA WC 70: Non-Shielded Power Cable 2000 V or less
Building wires and cables rated 600 V and less.
Connectors, splices, and terminations rated 600 V and less.
Related Sections include the following:
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES
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1.
2.
3.
4.
5.
1.3
A.
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Division 26 Section "Medium-Voltage Cables" for single-conductor and multiconductor
cables, cable splices, and terminations for electrical distribution systems with 2001 to
35,000 V.
Division 27 Section “Common Work Results for Communications” for sleeves and
sleeve seals to be used for installation of voice and data circuit cables.
Division 27 Section "Communications Horizontal Cabling" for cabling used for voice
and data circuits.
Division 28 Section “Common Work Results for Electronic Safety and Security” for
sleeves and sleeve seals to be used for installation of electronic safety and security cables.
Division 28 Section “Conductors and Cables for Electronic Safety and Security” for
cabling used for safety and security equipment.
ACTION SUBMITTALS
Product Data: For each type of product indicated.
1.4
INFORMATIONAL SUBMITTALS
A.
Field quality-control test reports.
1.5
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.
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.
2.
3.
4.
5.
C.
Alcan Products Corporation; Alcan Cable Division.
American Insulated Wire Corp.; a Leviton Company.
General Cable Corporation.
Senator Wire & Cable Company.
Southwire Company.
Copper Conductors: Comply with NEMA WC 70.
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D.
Conductor Insulation: Comply with NEMA WC 70 for Types THW THHN-THWN and SO.
E.
Multiconductor Cable: Comply with NEMA WC 70 for metal-clad cable, Type MC
Type SO with ground wire.
1.
2.2
and
Cable Armor: Galvanized steel.
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.
2.
3.
4.
5.
C.
AFC Cable Systems, Inc.
Hubbell Power Systems, Inc.
O-Z/Gedney; EGS Electrical Group LLC.
3M; Electrical Products Division.
Tyco Electronics Corp.
Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type,
and class for application and service indicated.
RFI 27 - #10 Solid Wire
PART 3 - EXECUTION
3.1
CONDUCTOR MATERIAL APPLICATIONS
A.
Feeders: Copper. 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.
B.
Feeders & Branch Circuits: Type THHN-THWN, single conductors in raceway.
C.
Cables concealed in Ceilings:: Metal-clad cable, Type MC limited to 5-foot lengths for
connection to light fixtures and equipment.
D.
Cables Concealed in Walls and Partitions: Metal-clad cable, Type MC may be used but shall
be limited to portion of circuits within the walls or partitions and not be used as homeruns for
the circuits.
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E.
Feeders Installed below Raised Flooring: Type THHN-THWN, single conductors in raceway
with Metal-clad cable, Type MC limited to 5-foot length for final connection to equipment.
F.
Exposed Branch Circuits, Including in Crawlspaces: Type THHN-THWN, single conductors in
raceway.
G.
Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN-THWN, single
conductors in raceway .
H.
Class 1 Control Circuits: Type THHN-THWN, in raceway.
I.
Class 2 Control Circuits: Power-limited tray cable, in cable tray.
J.
Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainlesssteel wire-mesh strain relief device at terminations to suit application.
3.3
INSTALLATION OF CONDUCTORS AND CABLES
A.
All cables shall be concealed in finished walls, ceilings, partitions, and under raised floors,
unless otherwise indicated. Cables shall not be installed through walls or floors. In wet
locations, cables shall have a liquid-tight type covering.
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 conductors or raceway.
D.
Support cables according to Division 26 Section "Hangers and Supports for Electrical Systems."
E.
Identify and color-code conductors and cables according to Division 26 Section "Identification
for Electrical Systems."
F.
Extra Flexible Cables: Extra flexible cables may be used where indicated on the drawings.
G.
Install all wire continuous from outlet to outlet or terminal to terminal. Splices in cables when
approved shall be made in handholds, pull boxes, or junction boxes. Make branch circuit
splices in outlet boxes with 8 inch of correctly color-coded tails left in the box. Splices shall be
held to a minimum.
H.
Install dedicated neutral conductors for branch circuits that supply all lighting circuits and
multi-wire branch circuits.
3.4
A.
CONNECTIONS
Tighten electrical connectors and terminals according to manufacturer's published torquetightening values. If manufacturer's torque values are not indicated, use those specified in
UL 486A and UL 486B.
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B.
Make splices and taps that are compatible with conductor material and that possess equivalent
or better mechanical strength and insulation ratings than unspliced conductors.
C.
Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack.
3.5
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."
3.6
A.
FIRESTOPPING
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."
3.7
FIELD QUALITY CONTROL
A.
Perform tests and inspections and prepare test reports.
B.
Tests and Inspections:
1.
2.
3.
Perform each visual and mechanical inspection and electrical test stated in NETA
Acceptance Testing Specification. Certify compliance with test parameters.
Prior to energizing cables test cable terminations for proper phase rotation.
Infrared Scanning: 120 days after Substantial Completion, perform an infrared scan of
each splice in cables and conductors No. 3 AWG and larger. Remove box and equipment
covers so splices are accessible to portable scanner.
a.
b.
c.
C.
Test Reports: Prepare a written report to record the following:
1.
2.
3.
D.
Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of
each splice 11 months after date of Substantial Completion.
Instrument: Use an infrared scanning device designed to measure temperature or
to detect significant deviations from normal values. Provide calibration record for
device.
Record of Infrared Scanning: Prepare a certified report that identifies splices
checked and that describes scanning results. Include notation of deficiencies
detected, remedial action taken, and observations after remedial action.
Test procedures used.
Test results that comply with requirements.
Test results that do not comply with requirements and corrective action taken to achieve
compliance with requirements.
Remove and replace malfunctioning units and retest as specified above.
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END OF SECTION 260519
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