Thhncu-generic thhn500mcmstrwhtmr 500 Kcmil Thhn Wire

Product Description

The THHNCU-GENERIC thhn500mcmstrwhtmr is a 500 kcmil stranded copper THHN building wire rated for 600 volts and 90 degrees C in dry environments. Constructed with a 37-strand copper conductor, PVC thermoplastic insulation, and a nylon jacket, this wire is built for high-ampacity branch circuit and feeder installations. It carries a current rating of 380 amps at 75 degrees C and 350 amps at 90 degrees C, making it suitable for heavy commercial and industrial electrical work. Licensed electricians and electrical contractors install this wire in conduit runs where NEC-compliant, high-current capacity is required.

This wire is used in commercial, industrial, and large residential electrical installations where high-ampacity copper feeders are required. Typical applications include main feeder runs, service entrance conductors within conduit, and large motor branch circuits. The white insulation color aids in phase identification and circuit labeling per job-site or NEC color-coding conventions. It is sold cut to length, allowing contractors to order precisely what a given run requires without excess waste.

Key Features

• 500 kcmil stranded copper conductor with 37-strand construction for flexibility during installation
• Rated 380 amps at 75 degrees C and 350 amps at 90 degrees C for heavy feeder and branch circuit use
• PVC thermoplastic insulation with nylon jacket rated to 90 degrees C dry service
• 600-volt rating meets NEC requirements for standard commercial and industrial feeder applications
• White insulation supports circuit identification and phase color-coding practices
• Cut-to-length availability reduces material waste on large conduit runs

Compatibility

Designed for use in conduit systems as a THHN-rated building wire for high-ampacity feeder and branch circuit applications in commercial and industrial electrical installations.

Installation Notes

Installation of 500 kcmil THHN wire requires a licensed electrician and must comply with applicable NEC articles governing conductor ampacity, conduit fill, and feeder sizing. Power down and lockout/tagout all circuits before pulling or terminating conductors. Wire of this gauge typically requires mechanical wire-pulling equipment and appropriate conduit lubricant to avoid insulation damage during pull-in. Terminate only at lugs and connectors rated for the conductor size and material.

Technical Specifications

• Conductor Material: Copper
• Conductor Size: 500 kcmil
• Stranding: 37 Strand
• Current Rating: 320 amps at 60 degrees C, 380 amps at 75 degrees C, 350 amps at 90 degrees C
• Voltage Rating: 600 volts
• Temperature Rating: 90 degrees C (Dry)
• Insulation Material: PVC Thermoplastic
• Jacket Material: Nylon
• Insulation Color: White
• Outer Diameter: 0.926 inches
• Weight: 1655 pounds per thousand feet

Standard Information

• Brand: THHNCU-GENERIC
• Manufacturer Part Number: thhn500mcmstrwhtmr