| Conductor | Either solid or stranded soft drawn copper, per ASTM Standards |
|---|---|
| Insulation | PVC with a clear nylon (polyamide) |
| Packing | Roll |
Copper THHN/THWN-2 conductors are primarily used in conduit and cable trays, when approved, for services, feeders and branch circuits in commercial or industrial applications as specified in the National Electric Code.