Product Information

Specification

12 AWG THHN THWN-2 Stranded Copper Building Wire

Allowable Ampacity:

• 20 Amps for General Applications (60°C)

• 25 Amps in Wet Locations (75°C)

• 25 Amps in Dry Locations (90°C)

Description

12 AWG THHN/THWN-2 stranded copper wire is rated for THHN (thermoplastic high heat-resistant nylon, dry) and THWN-2 (wet) applications. The "W" indicates that the wire is water-resistant. It supports up to 600 volts and works at temperatures up to 90°C. The PVC jacket is flame-retardant and resistant to sunlight, moisture, and chemicals. This wire is commonly used for lighting, conduit systems, and control wiring. 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 12 AWG THHN Wire

12 AWG THHN wire is ideal for 20-amp circuits in:

• Residential Wiring: Lighting, outlets, and appliances on 20-amp circuits.

• Commercial Wiring: Powering light-duty equipment, offices, and small retail spaces.

• Lighting Systems: Suitable for both indoor and outdoor circuits.

• Conduit Installations: Specifically designed to fit in conduits for wet or dry environments.

• Low-Voltage Circuits: Control wiring, HVAC systems, and small motors (up to 600 volts).

• Outdoor Use (With Conduit): Approved for damp or exposed locations when installed in conduit.

• Branch Circuits: For safely distributing power from circuit breakers.

Also Known As

12 gauge copper wire, THHN #12 wire, 12 stranded copper building wire, 12 gauge stranded wire, 12 conduit wire, 12 nylon-insulated copper wire, 12 THHN wire, 12 THHN/THWN-2 wire, 12 thermoplastic high heat-resistant wire, 12 PVC-coated wire, 12 nylon-jacketed wire, 12 AWG THHN stranded wire by the foot, 12 AWG THHN stranded wire 500 ft, 12 annealed copper stranded wire.

Construction of THHN 12 Gauge Stranded Wire

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

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

• Outer Jacket:
  A tough, abrasion-resistant nylon jacket.

Standards for THHN/THWN-2 12 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 12 AWG THHN Wire

• Size (AWG): 12

• Weight per 1,000 ft: 25 lbs

• Outside Diameter: 0.140 inches

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

• Number of Strands: 19

• Insulation: PVC

• Insulation Thickness (mils): 15

• Nylon Thickness (mils): 4

• Jacket: PVC
  
  

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

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