Product Information

Specification

600 MCM THHN THWN-2 Stranded Copper Building Wire

Allowable Ampacity:

• 340 Amps for General Applications (60°C)

• 420 Amps in Wet Locations (75°C)

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

Description

600 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 suitable for damp and wet environments when installed in conduit. Supporting up to 600 volts, this wire operates at temperatures up to 90°C. Its flame-retardant PVC jacket resists sunlight, moisture, and chemicals, ensuring reliable performance in challenging conditions. Widely used in large-scale industrial, commercial, and power distribution systems, it 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 600 MCM THHN Wire?

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

• Main Feeder Wires: Delivering high-capacity power to subpanels and distribution systems.

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

• Industrial Machinery: Supplying high-current production lines and heavy equipment.

• 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

600 MCM copper wire, THHN #600 MCM wire, 600 MCM stranded copper building wire, 600 gauge stranded wire, 600 conduit wire, 600 nylon-insulated copper wire, 600 THHN wire, 600 THHN/THWN-2 wire, 600 thermoplastic high heat-resistant wire, 600 PVC-coated wire, 600 nylon-jacketed wire, 600 MCM THHN stranded wire by the foot, 600 MCM THHN stranded wire 500 ft, 600 annealed copper stranded wire.

Construction of THHN 600 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-2 600 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 600 MCM THHN Wire

• Size (AWG): 600 MCM

• Weight per 1,000 ft: 2,013 lbs

• Outside Diameter: 1.07 inches

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

• Number of Strands: 61

• Insulation: PVC

• Insulation Thickness (mils): 70

• Nylon Thickness (mils): 9

• Jacket: PVC
  
  

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