26 0519 - 1
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
SECTION 26 0519
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES (600 V AND LESS)
PART 1 GENERAL
1.1
1.2
1.3
1.4
1.5
SECTION INCLUDES
A.
Single conductor building wire.
B.
Wire and cable for 600 volts and less.
C.
Wiring connectors.
RELATED REQUIREMENTS
A.
Section 07 8400 - Firestopping.
B.
Section 26 0574 - Electrical Testing.
C.
Section 26 0553 - Identification for Electrical Systems: Identification products and
requirements.
REFERENCE STANDARDS
A.
NEMA WC 70 - Power Cables Rated 2000 Volts or Less for the Distribution of Electrical
Energy; National Electrical Manufacturers Association; 2009 (ANSI/NEMA WC 70/ICEA
S-95-658).
B.
NFPA 70 - National Electrical Code; National Fire Protection Association; Most Recent
Edition Adopted by Authority Having Jurisdiction, Including All Applicable Amendments
and Supplements with 2009 Georgia State Amendments.
C.
UL 44 - Thermoset-Insulated Wires and Cables; Current Edition, Including All Revisions.
D.
UL 83 - Thermoplastic-Insulated Wires and Cables; Current Edition, Including All
Revisions.
E.
UL 486A-486B - Wire Connectors; Current Edition, Including All Revisions.
F.
UL 486C - Splicing Wire Connectors; Current Edition, Including All Revisions.
SUBMITTALS
A.
See Section 26 0510 - General Electrical Requirements for submittal procedures.
B.
Product Data: Provide for each cable assembly type.
QUALITY ASSURANCE
A.
Conform to requirements of NFPA 70.
PART 2 PRODUCTS
2.1
CONDUCTOR AND CABLE APPLICATIONS
A.
Do not use conductors and cables for applications other than as permitted by NFPA 70
and product listing.
B.
Provide single conductor building wire installed in suitable raceway unless otherwise
indicated, permitted, or required.
C.
Concealed Dry Interior Locations: Use only building wire with Type THHN/THWN
insulation in raceway.
Fire Alarm Replacement
Altamaha Technical College
Jesup, Georgia
26 0519 - 2
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
D.
Exposed Dry Interior Locations: Use only building wire with Type THHN/THWN_
insulation in raceway.
E.
Above Accessible Ceilings: Use only building wire with Type THHN/THWN insulation in
raceway.
F.
Wet or Damp Interior Locations: Use only building wire with Type THHN/THWN insulation
in raceway.
G.
Exterior Locations: Use only building wire with Type XHHW insulation in raceway.
H.
Under Slab on Grade Installations: Use only building wire with Type XHHW insulation in
raceway.
I.
For In Slab Installations: Use only building wire with Type THHN/THWN insulation in
raceway.
J.
Use solid conductor for feeder and branch circuits #10AWG and smaller.
K.
Use stranded conductor for feeder and branch circuits #8 AWG and larger.
L.
Use stranded conductors for control circuits.
M.
Use conductor not smaller than 12 AWG for power and lighting circuits.
N.
Use conductor not smaller than 16 AWG for control circuits.
O.
Use 10 AWG conductors for 20 ampere, 120 volt branch circuits longer than 75 feet.
P.
Use 10 AWG conductors for 20 ampere, 277 volt branch circuits longer than 200 feet.
Q.
Conductor sizes are based on copper unless indicated as aluminum or "AL".
2.2
CONDUCTOR AND CABLE MANUFACTURERS
2.3
ALL CONDUCTORS AND CABLES
2.4
A.
Provide products that comply with requirements of NFPA 70.
B.
Provide products listed and classified by Underwriters Laboratories Inc. as suitable for
the purpose indicated.
C.
Unless specifically indicated to be excluded, provide all required conduit, boxes, wiring,
connectors, etc. as required for a complete operating system.
D.
Comply with NEMA WC 70.
E.
Thermoplastic-Insulated Conductors and Cables: Listed and labeled as complying with
UL 83.
F.
Thermoset-Insulated Conductors and Cables: Listed and labeled as complying with UL
44.
SINGLE CONDUCTOR BUILDING WIRE
A.
Manufacturers: conductors shall be manufactured in the USA.
B.
Conductor Stranding:
1.
Feeders and Branch Circuits:
a.
Size 10 AWG and Smaller: Solid.
b.
Size 8 AWG and Larger: Stranded.
C.
Insulation Voltage Rating: 600 V.
D.
Insulation:
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Jesup, Georgia
26 0519 - 3
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
1.
2.5
E.
Conductor: Copper.
1.
Provide copper conductor. No aluminum conductor shall be allowed.
2.
Provide copper conductor to chillers; aluminum conductor shall NOT be allowed
to serve chillers.
F.
Insulation Voltage Rating: 600 volts.
G.
Insulation: NFPA 70, Type _____.
1.
Dry location Feeders and Branch Circuits sized #8 AWG and smaller: Type
THHN/THWN.
2.
Dry location Feeders and Branch Circuits sized #6 AWG and larger: Type
THHN/THWN or THW.
3.
Damp or wet location feeders and branch circuits, all sizes: XHHW
WIRING CONNECTORS
A.
2.6
Copper Building Wire: Type THHN/THWN or THHN/THWN-2, except as
indicated below.
Description: Wiring connectors appropriate for the application, suitable for use with the
conductors to be connected, and listed as complying with UL 486A-486B or UL 486C as
applicable.
LACING AND LUBRICANTS
A.
Lacing: wiring in cabinets, panels, pullboxes, junction boxes and electrical gear shall be
laced and held with one of the following:
1.
T&B Ty-Raps
2.
Fastway Wire Ties
3.
Burndy Uni Raps
B.
Lubricants: Electro Y-ER-EAS, Ideal Yellow 77, or Minerallac #100.
PART 3 EXECUTION
3.1
3.2
3.3
EXAMINATION
A.
Verify that interior of building has been protected from weather.
B.
Verify that work likely to damage wire and cable has been completed.
C.
Verify that raceways, boxes, and equipment enclosures are installed and are properly
sized to accommodate conductors and cables in accordance with NFPA 70.
D.
Verify that raceway installation is complete and supported.
E.
Verify that field measurements are as shown on the drawings.
F.
Verify that conditions are satisfactory for installation prior to starting work.
PREPARATION
A.
Clean raceways thoroughly to remove foreign materials before installing conductors and
cables.
B.
Verify that interior of building has been protected from weather.
INSTALLATION
A.
Install products in accordance with manufacturer's instructions.
B.
Install conductors and cable in a neat and workmanlike manner in accordance with NECA
1.
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Jesup, Georgia
26 0519 - 4
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
C.
Installation in Raceway:
1.
Tape ends of conductors and cables to prevent infiltration of moisture and other
contaminants.
2.
Pull all conductors and cables together into raceway at same time.
3.
Do not damage conductors and cables or exceed manufacturer's recommended
maximum pulling tension and sidewall pressure.
4.
Use suitable wire pulling lubricant where necessary, except when lubricant is not
recommended by the manufacturer.
D.
Paralleled Conductors: Install conductors of the same length and terminate in the same
manner.
E.
Secure and support conductors and cables in accordance with NFPA 70 using suitable
supports and methods approved by the authority having jurisdiction. Provide independent
support from building structure. Do not provide support from raceways, piping, ductwork,
or other systems.
F.
Install conductors with a minimum of 12 inches of slack at each outlet.
G.
Neatly train and bundle conductors inside boxes, wireways, panelboards and other
equipment enclosures.
H.
Make wiring connections using specified wiring connectors.
1.
Make splices and taps only in accessible boxes. Do not pull splices into
raceways or make splices in conduit bodies or wiring gutters.
2.
Remove appropriate amount of conductor insulation for making connections
without cutting, nicking or damaging conductors.
3.
Do not remove conductor strands to facilitate insertion into connector.
4.
Clean contact surfaces on conductors and connectors to suitable remove
corrosion, oxides, and other contaminates. Do not use wire brush on plated
connector surfaces.
I.
Insulate splices and taps that are made with uninsulated connectors using methods
suitable for the application, with insulation and mechanical strength at least equivalent to
unspliced conductors.
J.
Insulate ends of spare conductors using vinyl insulating electrical tape.
K.
Color Code Legend: Provide identification label identifying color code for ungrounded
conductors at each piece of feeder or branch-circuit distribution equipment when
premises has feeders or branch circuits served by more than one nominal voltage
system.
L.
Install firestopping to preserve fire resistance rating of partitions and other elements,
using materials and methods specified in Section 07 8400.
M.
Unless specifically indicated to be excluded, provide final connections to all equipment
and devices, including those furnished by others, as required for a complete operating
system.
N.
Install wire and cable securely, in a neat and workmanlike manner, as specified in
NECA-1.
O.
Route wire and cable as required to meet project conditions.
1.
Wire and cable routing indicated is approximate unless dimensioned.
2.
Include circuit of lengths required to install connected devices within 10 ft of
location shown.
P.
Use wiring methods indicated.
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26 0519 - 5
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
3.4
Q.
Use suitable wire pulling lubricant for building wire #4 AWG and larger, and for smaller
sizes where require to pull without conductor damage. Manufacturers include but are not
limited to Electro Y-ER-EAS, Ideal Yellow 77, Minerallac #100, or Polywater.
R.
Pull all conductors into raceway at the same time.
S.
Do not pull wires until conduit system is complete.
T.
Raceway shall be continuous.
U.
Terminations and Equipment Connections: compression fittings shall be installed with
the manufacturer's recommended procedures and tools. Mechanical connections shall be
torqued utilizing the manufacturer's published torque requirements utilizing tools
indicating torque values for the device being tightened.
V.
Use suitable wire pulling lubricant for building wire #4 AWG and larger.
W.
Protect exposed cable from damage.
X.
All splices, taps and joints in exterior circuits shall be waterproofed by use of UL listed
kits.
Y.
Use suitable cable fittings and connectors.
Z.
Neatly train and lace wiring inside boxes, equipment, and panelboards.
AA.
All branch circuits (lighting and power) shall have a dedicated Neutral conductor. Shared
neutral conductors shall not be allowed.
AB.
Conductors shall be continuous and unspliced between junction boxes, panels, or
equipment terminations.
AC.
Provide manufacturer's compatible fittings meeting U.L. at boxes.
SPLICES, TAPS, TERMINATIONS
A.
Clean conductor surfaces before installing lugs and connectors.
B.
Make splices, taps, and terminations to carry full ampacity of conductors with no
perceptible temperature rise.
C.
Conductors #6 AWG and larger: Provide mechanical connectors containing pre-formed
and molded insulation designed with the connector as a system.
D.
Conductors #6 AWG and larger: provide Terminal Lugs. Anderson Versa-Crimp,
Burndy Hydent or T & B Color-Keyed.
E.
Conductors #6 AWG and larger: Use split bolt connectors for copper conductor splices
and taps, 6 AWG and larger. Tape uninsulated conductors and connector with electrical
tape to 150 percent of insulation rating of conductor.
F.
Use solderless pressure connectors with insulating covers for copper conductor splices
and taps, 8 AWG and smaller.
G.
Use insulated spring wire connectors with plastic caps for copper conductor splices and
taps, 10 AWG and smaller.
1.
Use Hi Bakelite wire connectors, 3M Skotchloks or Ideal Wing Nut. Conductors
insulation shall extend into the wire connector.
2.
The connector shall be covered with vinyl plastic tape or with Raychem 600VAC
heatshrink insulation.
H.
Splices, taps and joints in exterior circuits shall be waterproofed by use of UL listed kits.
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Altamaha Technical College
Jesup, Georgia
26 0519 - 6
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
1.
2.
3.5
3.6
In damp or wet locations such as outside lighting, provide watertight conductor
connections.
Sealing system shall be flame-retardant heat shrinkable watertight seal with
heat activated sealants, Raychem or equal.
I.
Compression fittings shall be installed with the manufacturer's recommended procedures
and tools.
J.
Mechanical connections shall be torqued utilizing the manufacturer's published torque
requirements utilizing tools indicating torque values for the device being tightened.
COLOR CODE
A.
Comply with the National Electrical Code.
B.
Provide color code on conductors.
C.
Color Code Method:
1.
Sizes #8 AWG and smaller: Conductor insulation shall have the color.
2.
Sizes #6 AWG and larger:
a.
Conductor insulation may have the color.
b.
Black conductor shall have tape bands minimum 2 inches wide. Tape
bands shall be visible in all equipment enclosures, junction boxes, pull
boxes, outlet boxes, condulets, splice & termination locations.
D.
Unless otherwise noted, conductors shall be color coded as follows:
1.
For 277/480 Volt, 3 Phase, 4 Wire System:
Phase A
Brown
Phase B
Orange
Phase C
Yellow
Neutral
Gray
Ground Green
2.
For 120/208 Volt, 3 Phase, 4 Wire System or 120/240 Volt, 3 Phase, 4 Wire
Delta System:
Phase A
Black
Phase B
Red
Phase C
Blue
Neutral
White
Ground
Green
3.
For a 240 volt, 3 phase, 4 wire, delta system, the conductor at 208 volts above
ground potential, the "B" phase, shall be red. "B" phase shall be marked "208
VOLTS TO GROUND" at panelboards, switchboards, transformers and feeder
junction boxes. Provide a tape label or engraved label "B" PHASE (RED) IS 208
VOLTS TO GROUND. Locate the label on transformer front, switchboard front,
switchgear front, or panelboard front. For panelboards having doors, provide the
label inside the panelboard door.
4.
Substitutions for the above colors are permitted, but the color coding for each
system shall be maintained throughout all feeder and branch circuits for that
system.
E.
Identify and color code wire and cable under provisions of Section 26 0553. Identify each
conductor with its circuit number or other designation indicated.
FIELD QUALITY CONTROL
A.
Perform inspection, testing, and adjusting in accordance with Section 01 4000.
B.
Perform field inspection to assure all provisions of this specification are incorporated prior
to Final Inspection.
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26 0519 - 7
LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS
AND CABLES (600 V AND LESS)
C.
Perform inspections and tests listed in NETA STD ATS, Section 7.3.2. The insulation
resistance test is required for all conductors. The resistance test for parallel conductors
listed as optional is not required.
D.
Correct deficiencies and replace damaged or defective conductors and cables.
END OF SECTION Fire Alarm Replacement
Altamaha Technical College
Jesup, Georgia