Copperweld THHN/THWN is a cost-stable alternative for small circuit applications. Lightweight and flexible, it pulls easily through conduit, raceways, and trays over long runs and bends.
Installed to NEC requirements, Copperweld THHN/THWN offers more electrical efficiency than its alternatives, pointing to lower monthly utility costs, less voltage drop and smoother running equipment. Disincentivizing pilferage and theft, it offers thieves only a small fraction of the scrap value of single-metal copper.
Cu-Clad Aluminum (CCA) Conductor — Drawn from a Copper-Clad Aluminum rod, with the copper metallurgically bonded to an AA 8000 series aluminum core, where oxygen-free copper forms a minimum of 10 percent of the cross-sectional area of a solid conductor or each strand of a stranded conductor.
Application Standards — UL-83, UL-1581, ASTM B566-4
Conductors — Solid or stranded annealed bimetallic conductor meeting ASTM B566 with an 8000-series aluminum core.
Conductor Insulation — Color-coded Polyvinyl Chloride (PVC) compound meeting the required thickness of Type THHN/THWN with a heat-stabilized Nylon jacket rated for 90°C in dry locations.
Copperweld® THHN/THWN building wire is for general purpose applications defined by the NEC. It is allowed for new construction or rewiring for 600-volt applications and is appropriate for use in dry locations in temperatures not to exceed 90°C and wet locations in temperatures not to exceed 75°C. For applications requiring Type MTW, the conductor is appropriate for use in dry locations at 90°C, or not to exceed 60°C in wet locations or where exposed to oils or coolants. For applications in ducts for residential, commercial, and industrial applications, the conductor is appropriate for use in fixed locations, dry locations, and damp locations.
Copperweld® Copper-Clad Aluminum THHN/THWN conductors are referenced by Article 310 of the National Electrical Code for use in general wiring. OSHA safety listed: UL E510284. ETL listing: 5021266.
Wiring Methods: Per section 310.3(B) and Table 310.4(A) of the National Electrical Code referencing Conductor Materials and Applications & Insulations Rated for 600 Volts, THHN/THWN conductors are primarily used in conduit and cable trays and may also be used for services, feeders and branch circuits in commercial or industrial applications as specified in the National Electrical Code. THHN/THWN applications are suitable for use in dry locations only at temperatures not to exceed 90°C.
Copperweld THHN/THWN is identified for use with Wiring Devices, Splice Connectors and Equipment Terminals Rated for Cu, Cu/Al and CO/ALR. When terminating with twist-on splice connectors, pre-twisting is not recommended. Torque until the wires are tight under the cap and visibly twisted together to ensure safe electrical contact. Do not exceed the number of wires per the manufacturer’s instructions. Copperweld® THHN/THWN is made with ASTM B-566 Copper-Clad Aluminum copper bimetal, which carries its own component listing, RU DVVU2. Copperweld THHN conductors are suitable to terminate on 15 and 20 ampere rated wiring devices (receptacles and snap switches) marked ‘copper only’ or ‘CO/ALR’. For termination on devices rated 30 amperes or greater, the termination must be marked ‘CU/AL’ or equivalent. Please consult UL Product IQ guide information RTRT and WJQR if further confirmation is required. Copperweld® THHN/THWN may be pigtailed to single-metal copper wire in dry, damp and wet locations; however, NEC-compliant termination methods must be applied for each location. Copperweld® CCA conductors satisfy Article 110.14 Electrical Connections as being a similar metal to copper for the purposes of electrical connections. Copperweld® THHN/THWN should not be terminated with single-metal Aluminum wire without the application of an oxide inhibitor along with a terminal or connector specifically listed for the intermixing of dissimilar metals. Copperweld® ASTM B-566 Copper-Clad Aluminum wire is not dissimilar to copper, brass or zinc-plated steel, and can be terminated with those metals without oxide inhibitors in dry locations only.
Solid
7 Strands
12 AWG
12 AWG
PVC
PVC
0.015
0.015
0.004
0.004
Outside Diameter (in)
0.119
0.130
Allowable Ampacity @ 60° C
15
15
Allowable Ampacity @ 75° C
20
20
Allowable Ampacity @ 90° C
25
25
Approx. Weight per lbs/1000 ft
10.78
11.76
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
144
144
Solid
7 Strands
10 AWG
10 AWG
PVC
PVC
0.020
0.020
0.004
0.004
Outside Diameter (in)
0.151
0.164
Allowable Ampacity @ 60° C
25
25
Allowable Ampacity @ 75° C
30
30
Allowable Ampacity @ 90° C
35
35
Approx. Weight per lbs/1000 ft
17.35
19.05
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
144
144
7 Strands
8 AWG
PVC
0.030
0.005
Outside Diameter (in)
0.217
Allowable Ampacity @ 60° C
35
Allowable Ampacity @ 75° C
40
Allowable Ampacity @ 90° C
45
Approx. Weight per lbs/1000 ft
32.08
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
72
7 Strands
6 AWG
PVC
0.030
0.005
Outside Diameter (in)
0.255
Allowable Ampacity @ 60° C
40
Allowable Ampacity @ 75° C
50
Allowable Ampacity @ 90° C
55
Approx. Weight per lbs/1000 ft
47.43
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
Call for quantities
7 Strands
4 AWG
PVC
0.040
0.006
Outside Diameter (in)
0.325
Allowable Ampacity @ 60° C
55
Allowable Ampacity @ 75° C
65
Allowable Ampacity @ 90° C
75
Approx. Weight per lbs/1000 ft
77.73
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
Call for quantities
7 Strands
2 AWG
PVC
0.040
0.006
Outside Diameter (in)
0.386
Allowable Ampacity @ 60° C
75
Allowable Ampacity @ 75° C
90
Allowable Ampacity @ 90° C
100
Approx. Weight per lbs/1000 ft
114.84
Standard Packaging
500' Plastic Spools, 1000' Wood Reel, 2500' Wood Reel
Standard 48x48 Pallet Qty.
Call for quantities
CCA offers a fraction of the scrap value of copper building wire.
When sized per Code, CCA delivers improved energy efficiency over alternatives.
CCA is lightweight, flexible, and terminates to standard torquing values.
NEC compliant for 600 Volt residential branch circuit conductors since 1971.
Listed for safety for use in general electrical wiring and branch circuits.
CCA has 50 years of safe performance history in standard circuits.
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