- Specifications
- Documents
- Description
- ASTM - B3
- UL Standards 83 and 758
- CSA C22.2 No. 75
- NOM-ANCE 90 Degree C
- Federal Specification A-A-59544
- National Electrical Code, NFPA 70
- VW-1
- FT1
- Rohs/Reach Compliant
Southwire THHN copper conductors are made with soft drawn copper. Combination-unilay stranding . The wire is covered with a tough heat and moisture resistant PVC insulation with an overall nylon jacket. Marked as THWN.