Thhn 350 Kcmil Stranded Copper Wire Brown 600V Cut Length

Product Description

The THHNCU-GENERIC thhn350mcmstrbrnmr is a 350 kcmil stranded copper conductor THHN building wire rated for 600 volts and 90 degrees C in dry locations. It features 37-strand construction for flexibility and is insulated with PVC thermoplastic with a nylon jacket, meeting the THHN standard for use in conduit and cable trays. Current capacity ranges from 260 amps at 60 degrees C to 350 amps at 90 degrees C depending on installation conditions. This wire is sold cut to length and is suited for commercial and industrial electrical distribution, panel feeds, and service entrance applications where large-gauge copper conductors are required.

This wire is appropriate for use in commercial, industrial, and large residential electrical installations where high-ampacity branch circuits, feeder runs, or service conductors are needed. The brown insulation color supports color-coded phase identification in multi-conductor conduit runs. Licensed electricians and electrical contractors typically install 350 kcmil wire for main feeder and distribution panel work. Cut-to-length purchasing reduces material waste on job-specific conduit runs.

Key Features

• 350 kcmil stranded copper conductor with 37-strand construction for flexibility in conduit pulls
• THHN-rated insulation: PVC thermoplastic with nylon jacket
• 600-volt rating suitable for standard building power distribution
• 90 degrees C dry rating with ampacity up to 350 amps
• Brown insulation for phase identification in conduit wiring systems
• Cut-to-length format reduces job-site material waste

Compatibility

Designed as a standard THHN-type 350 kcmil building wire suitable for use in conduit, wireways, and cable trays in commercial and industrial electrical systems per NEC guidelines.

Installation Notes

Installation of 350 kcmil feeder wire should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out all circuits before beginning termination work. Wire of this gauge typically requires mechanical lugs, hydraulic crimping tools, and conduit pulling equipment sized for large-diameter conductors. Verify that all termination hardware, conduit fill, and overcurrent protection are sized to match the conductor ampacity and installation conditions.

Technical Specifications

• Conductor Material: Copper
• Conductor Size: 350 kcmil
• Stranding: 37 Strand
• Insulation Material: PVC Thermoplastic
• Jacket Material: Nylon
• Insulation Color: Brown
• Voltage Rating: 600 volts
• Temperature Rating: 90 degrees C (Dry)
• Ampacity: 260 amps at 60 degrees C, 310 amps at 75 degrees C, 350 amps at 90 degrees C
• Outer Diameter: 797 mil
• Weight: 1174 pounds per thousand feet
• Wire Type: THHN

Standard Information

• Brand: THHNCU-GENERIC
• Manufacturer Part Number: thhn350mcmstrbrnmr