Copperweld® THHN/THWN-2 Cable helps teams manage cost, improve installation workflow, and deliver efficient electrical performance across a wide range of electrical applications.
Across commercial, industrial, and residential projects, electrical systems require building wire that performs reliably across different applications and installation conditions. Copperweld® THHN/THWN-2 conductors are designed to support these demands with a versatile construction suitable for use in conduit, cable trays, and other standard wiring methods. Its bimetallic design helps reduce exposure to copper price volatility, minimize theft-related disruptions, and deliver efficient electrical performance when sized per NEC requirements, while its lightweight, flexible construction supports consistent handling and installation across varied jobsite conditions.
| Equivalent Copper Size | CCA Size | No. of Strands** | Insulation Thickness (mils) | Nom. Outside Diameter | Nom.Total Weight | CCA Allowable Amerage* | ||
|---|---|---|---|---|---|---|---|---|
| PVC | Nylon | in | lb/1000 ft | 75° C | 90° C | |||
| 14 AWG | 12 AWG | Solid | 15 | 4 | 0.119 | 10.84 | 20 | 25 |
| 12 AWG | 10 AWG | Solid | 20 | 4 | 0.150 | 17.11 | 30 | 35 |
| 10 AWG | 8 AWG | Solid | 30 | 5 | 0.199 | 28.99 | 40 | 45 |
| 14 AWG | 12 AWG | 7 | 15 | 4 | 0.130 | 11.82 | 20 | 25 |
| 12 AWG | 10 AWG | 7 | 20 | 4 | 0.164 | 18.95 | 30 | 35 |
| 10 AWG | 8 AWG | 7 | 30 | 5 | 0.216 | 31.29 | 40 | 45 |
| 8 AWG | 6 AWG | 7 | 30 | 5 | 0.254 | 45.54 | 50 | 55 |
| 6 AWG | 4 AWG | 7 | 40 | 6 | 0.324 | 73.41 | 65 | 75 |
| 5 AWG | 3 AWG | 7 | 40 | 6 | 0.352 | 88.45 | 75 | 85 |
| 4 AWG | 2 AWG | 7 | 40 | 6 | 0.384 | 109.80 | 90 | 100 |
| 3 AWG | 1 AWG | 7 | 50 | 7 | 0.442 | 142.60 | 100 | 115 |
* Ampacity of conductors are based on the Copper-Clad Aluminum columns of NFPA 70 (NEC) Table 310.16. See 110.14(C), 240.4(D) and 310.15(B) and (C) for other limitations where applicable. ** Other stranding options available on request. | ||||||||
| CCA Size | No. of Strands* | Colors*** | Standard Packaging** | Part Number*** | ||||
|---|---|---|---|---|---|---|---|---|
| 12 AWG | Solid | See legend | 500’, 1000’, 2500’, 5000’ | 12THHN-1/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 10 AWG | Solid | See legend | 500’, 1000’, 2500’, 5000’ | 10THHN-1/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 8 AWG | Solid | See legend | 500’, 1000’, 2500’, 5000’ | 8THHN-1/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 12 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 12THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 10 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 10THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 8 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 8THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 6 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 6THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 4 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 4THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 3 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 3THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 2 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 2THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
| 1 AWG | 7 | See legend | 500’, 1000’, 2500’, 5000’ | 1THHN-7/0-CCA-[CLR]-T2-[Ft]-[Pkg] | ||||
* Other stranding options available on request. ** Other packaging options and denominations available on request. *** Part Number Legend: [Size of Circuit Cond.][Type]-[# of Strands Circuit Cond. / Ground Cond.]-[Cond. Material]-[Color]-T2-[Length in Feet]-[Packaging] • Color [CLR]: Black [BK], Blue [BL], Brown [BR], Gray [GY], Green [GR], Orange [OR], Purple [PU], Red [RD], White [WT], and Yellow [YL] • Other color options available upon request. • Standard Packaging [PKG]: Hand Coils [C], Plastic Spools or Wooden Reels [RL] | ||||||||
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