Product Information

Specification

8 AWG THHN THWN-2 Stranded Copper Building Wire

Allowable Ampacity:

• 40 Amps for General Applications (60°C)

• 50 Amps in Wet Locations (75°C)

• 55 Amps in Dry Locations (90°C)

Description

8 AWG THHN/THWN-2 stranded copper wire is a reliable choice for residential, commercial, and industrial wiring. Rated for THHN (thermoplastic high heat-resistant nylon, dry) and THWN-2 (wet) environments, it supports up to 600 volts and operates at temperatures up to 90°C. The flame-retardant PVC jacket resists sunlight, moisture, and chemicals, making it dependable for conduit systems, control circuits, and motor connections. It comes in lengths of 25 ft, 50 ft, 100 ft, 250 ft, and 500 ft, as well as by the foot for custom lengths.

Applications for 8 AWG THHN Wire

8 AWG THHN wire, with a capacity of up to 55 amps, is ideal for:

• Residential Subpanels: Distributing power to outbuildings or specific areas in larger homes.

• Air Conditioning Units: Powering medium-sized residential and light commercial systems.

• Water Heaters: Handling electric units requiring higher amperage.

• Large Appliances: Wiring ovens, ranges, and HVAC units.

• Motor Connections: Reliable for motors in residential, commercial, and industrial setups.

• Conduit Systems: Easily installed in structured wiring systems using conduits.

• Branch Circuits and Feeders: Distributing power from service panels to outlets, fixtures, and appliances.

Also Known As

8 AWG THHN wire, 8 stranded THHN wire, 8 gauge stranded wire, 8 copper wire, 8 AWG stranded copper wire, 8 AWG conduit wire, 8 AWG nylon wire, 8 AWG thermoplastic-insulated copper wire, 8 AWG THHN/THWN-2 wire, 8 gauge building cable, 8 stranded copper building wire, 8 THHN wire, 8 AWG wire by the foot.

Construction of THHN 8 AWG Stranded Wire

• Conductor:
  Flexible annealed soft copper per ASTM B3 and ASTM B8.

• Insulation:
  Durable, flame-retardant PVC jacket that resists sunlight and is lead-free.

• Outer Jacket:
  Abrasion-resistant nylon coating for smooth pulls through conduits.

Standards for THHN/THWN-2 8 AWG Wire

• ICEA S-73-532

• UL 1277 (Resistant to flame, moisture, and sunlight)

• UL 1581, UL 83, UL 1063, UL 758

• ASTM B3 and B8 conductor standards

• ANSI/NFPA 70 for Safe Electrical Design and Installation

• RoHS compliant

• Approved for NEC Class I and II systems and Division 2 hazardous locations

• Allowed for Exposed Run (ER) and complies with NEC regulations

• Complies with A-A59544 specifications for durability and safety

Specifications of 8 AWG THHN Wire

• Size (AWG): 8

• Weight per 1,000 ft: 66 lbs

• Outside Diameter: 0.240 inches

• Conductors: Annealed Soft Copper per ASTM B3 and ASTM B8

• Number of Strands: 19

• Insulation: PVC

• Insulation Thickness (mils): 30

• Nylon Thickness (mils): 4

• Jacket: PVC

*Data provided on this page is subject to change based on different manufacturers' variances

** Images are for display purposes only refer to Product Technical Details for accurate information on the product.

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