Product Overview THW 1 AWG copper wire is a high-capacity, single-conductor building cable made from stranded annealed copper and insulated with heat- and moisture-resistant PVC. Rated for 600 volts, this 1 gauge copper conductor delivers superior electrical performance in both wet and dry locations up to 75°C. THW 1 AWG is frequently used in large-scale residential, commercial, and industrial wiring systems where robust current-carrying capability is required.
Applications of THW 1 AWG Copper Wire This heavy-duty THW 1 copper wire is ideal for:
- Main service entrances and large panel feeders
- Industrial equipment wiring
- Underground conduit installations
- Subpanel and HVAC system connections
- Power distribution in high-load environments
Its combination of high ampacity and durability makes THW 1 AWG a trusted choice for contractors and electricians handling demanding power distribution tasks.
Compliance and Standards
- ASTM B-3: Soft or Annealed Copper Wire
- ASTM B-8: Concentric-Lay-Stranded Copper Conductors
- UL 83: Thermoplastic-Insulated Wires and Cables
- NEMA WC-5 / ICEA S-61-402: Thermoplastic-Insulated Power Cable Standard
Construction Details
- Conductor: 19-strand bare annealed copper
- Insulation: Thermoplastic PVC, resistant to heat, oil, and moisture
- Identification: Surface-printed with size, voltage rating, and THW designation
Technical Specifications – THW 1 AWG Cable
- Size: 1 AWG
- Number of Strands: 19
- Insulation Thickness: 80 mils
- Approx. Outside Diameter: 0.482 inches
- Ampacity: 130 amps
- Weight: Approx. 326 lbs per 1000 feet
Key Benefits
- High-performance THW 1 AWG copper wire for demanding power applications
- Suitable for raceway, conduit, and underground duct installations
- Durable PVC insulation provides protection against chemicals and abrasion
- Flexible and easy to handle despite larger gauge size
- Fully compliant with UL and NEC standards
Choose TOT Wire & Cable TOT Wire & Cable supplies reliable THW 1 AWG building wire designed for performance and durability. With a strong focus on competitive pricing, fast delivery, and quality assurance, we are a trusted partner for electrical professionals nationwide.
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