Product Overview THW 1/0 AWG copper wire is a high-capacity building wire designed for heavy-duty electrical distribution in residential, commercial, and industrial applications. Featuring 19 strands of annealed copper and insulated with thermoplastic PVC, this cable is rated for 600 volts and performs reliably in both dry and wet environments up to 75°C. It is commonly used for feeder circuits, service entrances, and branch circuits where large ampacity is needed.
Applications of THW 1/0 AWG Copper Wire
- Feeder wiring for main panels and subpanels
- Service entrance cable installations
- HVAC system power supply
- Raceway and underground conduit use
- High-load equipment and lighting systems
With its high ampacity and UL listing, THW 1/0 is a popular solution for power distribution systems that require safe and dependable performance.
Compliance and Standards
- ASTM B-3: Annealed Copper Wire
- ASTM B-8: Concentric-Lay-Stranded Conductors
- UL 83: Thermoplastic-Insulated Wires and Cables
- NEMA WC-5 / ICEA S-61-402: Power Cable Insulation Standards
Construction Details
- Conductor: 19-strand bare annealed copper
- Insulation: Heat- and moisture-resistant PVC (Polyvinyl Chloride)
- Identification: Surface-marked with size, voltage rating, and 'THW' designation
Technical Specifications – THW 1/0 AWG Copper Cable
- Size: 1/0 AWG
- Number of Strands: 19
- Insulation Thickness: 80 mils
- Approximate Outside Diameter: 0.522 inches
- Ampacity: 150 amps
- Approximate Weight: 401 lbs per 1000 feet
Advantages of THW 1/0 AWG Cable
- Ideal for high-load power distribution
- Suitable for direct burial in conduit and raceways
- Durable PVC insulation resists heat, oil, and abrasion
- Easy to handle and install
- NEC and UL compliant
Why Choose TOT Wire & Cable? TOT Wire & Cable provides high-quality, competitively priced THW 1/0 AWG copper wire with fast nationwide delivery. Our products meet the highest industry standards and offer the reliability electricians and contractors trust.
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