Product Information

Specification

500 MCM THHN THWN-2 Stranded Copper Building Wire

Allowable Ampacity:

• 310 Amps for General Applications (60°C)

• 380 Amps in Wet Locations (75°C)

• 430 Amps in Dry Locations (90°C) (for derating purposes only).

Description

500 MCM THHN/THWN-2 stranded copper wire is rated for THHN (thermoplastic high heat-resistant nylon, dry) and THWN-2 (wet) applications. The "W" indicates water resistance, making it ideal for damp and wet environments when installed in conduit. Supporting up to 600 volts, this wire operates at temperatures up to 90°C. With a flame-retardant PVC jacket that resists sunlight, moisture, and chemicals, it ensures durability in demanding environments. Commonly used in industrial, commercial, and large-scale power distribution, this wire is available in lengths of 25 ft, 50 ft, 100 ft, 250 ft, and 500 ft, as well as by the foot for custom lengths.

What are the Applications of 500 MCM THHN Wire?

• Service Entrance Wires: Powering large industrial and commercial facilities.

• Main Feeder Wires: Delivering power to major subpanels and distribution systems.

• Heavy-Duty HVAC Systems: Supporting large-scale heating, cooling, and ventilation systems.

• Industrial Equipment: Supplying high-current production lines and heavy machinery.

• Underground Installations: Suitable for conduit applications when double-rated as THWN.

• Power Distribution: Providing reliable power for factories, multi-building complexes, and campuses.

Also Known As

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

Construction of THHN 500 MCM 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-2 500 MCM 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 500 MCM THHN Wire

• Size (AWG): 500 MCM

• Weight per 1,000 ft: 1,640 lbs

• Outside Diameter: 0.960 inches

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

• Number of Strands: 37

• Insulation: PVC

• Insulation Thickness (mils): 60

• Nylon Thickness (mils): 8

• Jacket: PVC
  
  

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

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