Thhncu-generic thhn350mcmstrblumr Thhn 350 Kcmil Copper Wire

Product Description

The THHNCU-GENERIC thhn350mcmstrblumr is a 350 kcmil stranded copper conductor THHN building wire with blue PVC insulation and a nylon jacket, rated for 600 volts and 90 degrees C in dry installations. Designed for use in conduit runs in commercial and industrial applications, this wire carries up to 350 amps at 90 degrees C, making it appropriate for high-ampacity branch circuits, feeder runs, and service entrance work. The 37-strand construction provides flexibility during pull-through in conduit, reducing the effort required on longer or complex runs. Licensed electricians performing large-frame commercial or industrial wiring installations are the primary installers of conductors at this size.

This conductor is suited for commercial, industrial, and high-load residential feeder and branch circuit wiring where THHN-rated building wire is required in conduit. The cut-to-length format allows procurement of the exact footage needed for a project, reducing waste on large feeder or service runs. At 350 kcmil, this wire is commonly used for high-ampacity panel feeds, motor circuits, and distribution equipment connections where NEC table ampacity values demand a large-format conductor. The blue insulation color supports phase or circuit identification practices common in multi-wire electrical systems.

Key Features

• 350 kcmil conductor size rated up to 350 amps at 90 degrees C in dry conditions
• 37-strand copper construction for improved flexibility in conduit pulls
• PVC insulation with nylon jacket meets THHN specification for 600-volt dry service
• Blue insulation color supports circuit identification in multi-conductor installations
• Cut-to-length format minimizes material waste on custom feeder and service runs

Compatibility

Designed as a standard THHN-rated building wire for use in conduit in commercial and industrial electrical systems where 350 kcmil copper conductors are specified per NEC ampacity tables.

Installation Notes

Installation of 350 kcmil conductors must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit or panel before making any terminations. Wire pulling lubricant rated for THHN insulation is recommended for conduit runs of significant length or with multiple bends. Verify that termination lugs, connectors, and equipment are rated for 350 kcmil copper conductors before completing connections.

Technical Specifications

• Conductor Size: 350 kcmil
• Ampacity: 260 amps at 60 degrees C, 310 amps at 75 degrees C, 350 amps at 90 degrees C
• Voltage Rating: 600 volts
• Temperature Rating: 90 degrees C (dry)
• Conductor Material: Copper
• Stranding: 37 strand
• Insulation Material: PVC, Thermoplastic
• Jacket Material: Nylon
• Insulation Color: Blue
• Wire Type: THHN
• Outer Diameter: 0.797 inches
• Weight: 1174 pounds per 1000 feet

Standard Information

• Brand: THHNCU-GENERIC
• Manufacturer Part Number: thhn350mcmstrblumr