THW 8 AWG copper wire is a high-performance building wire designed for power and lighting circuits across residential, commercial, and industrial installations. Made of stranded soft-annealed copper and insulated with durable thermoplastic (PVC), this 8 gauge THW wire meets stringent industry standards and is rated for 600V and 75°C operation in both wet and dry environments.
Applications – 8 AWG THW Copper Building Wire
This THW 8 copper wire is widely used in:
Branch circuits in homes, buildings, and commercial facilities
Industrial wiring applications
Power distribution in conduit or raceways
Control panels and feeder systems
Indoor and outdoor electrical systems
Approved for use in wet locations, dry locations, and direct burial where applicable, this 8 AWG THW wire is fully compliant with the National Electrical Code (NEC).
Construction – Cable THW 8 AWG
Conductor: 7-strand soft-drawn annealed copper, bare or tinned, per ASTM B-3, B-8, B-33
Insulation: Flame-retardant PVC (polyvinyl chloride) thermoplastic insulation, black
Identification: Surface-printed with manufacturer info, voltage rating (600V), conductor size (8 AWG), and UL Type THW
Technical Specifications – THW 8 Gauge Wire
Parameter | Specification |
---|---|
Conductor Size | 8 AWG |
Stranding | 7-strand annealed copper |
Insulation Thickness | 45 mils |
Outer Diameter (O.D.) | 0.232 inches |
Voltage Rating | 600 Volts |
Max Operating Temp. | 75°C (wet or dry conditions) |
Ampacity (NEC 310.16) | 50 Amps |
Approx. Weight per 1000 ft | 69.2 lbs |
Features – 8 AWG THW Copper Wire
Excellent conductivity and thermal stability
Resistant to moisture, heat, and physical abrasion
UL 83 listed, compliant with NEC and NEMA WC-5 standards
Easy installation due to flexible 7-strand design
Suitable for commercial, residential, and industrial wiring
Standards & Certifications
ASTM B-3: Soft or annealed copper wire
ASTM B-8: Stranded copper conductors
UL 83: PVC insulated wires and cables
NEMA WC-5 / ICEA S-61-402: Thermoplastic-insulated wire standards