Thhncu-generic thhn3strblumr Thhn 3 Awg Copper Wire Blue

Product Description

The THHNCU-GENERIC thhn3strblumr is a 3 AWG stranded copper THHN building wire with blue PVC insulation and a nylon jacket, rated for 600 volts and 90 degrees C in dry environments. It is sold cut to length, making it practical for commercial and residential electrical rough-in work where specific footage is needed. The 19-strand construction provides flexibility compared to solid conductors of the same gauge, easing pull-through in conduit runs. Current capacity is 85 amps at 60 degrees C, 100 amps at 75 degrees C, and 115 amps at 90 degrees C, depending on the applicable temperature rating of the terminations and conduit fill conditions. Licensed electricians and electrical contractors are the primary installers.

This wire is suited for branch circuit wiring, feeder runs, and panel connections in conduit installations in both residential and commercial construction. The blue insulation color is commonly used to designate specific circuits or phases per job-site wiring conventions. Cut-to-length availability reduces waste on jobs where standard spool footage exceeds the required run. The 3 AWG size is frequently used for 100-amp subpanel feeds, large appliance circuits, and similar higher-ampacity branch circuits where NEC Table 310 ampacity requirements must be met.

Key Features

• 3 AWG copper conductor with 19-strand construction for flexibility in conduit
• THHN type with PVC insulation and nylon jacket rated to 600 volts
• 90 degrees C dry temperature rating with tiered ampacity up to 115 amps
• Blue PVC insulation for circuit identification per job-site color coding
• Sold cut to length to minimize material waste on specific run lengths
• Outer diameter of 346 mil for conduit fill calculation purposes

Compatibility

Designed for use in conduit systems as a general-purpose THHN building wire suitable for branch circuit and feeder applications governed by NEC installation requirements.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before terminating or splicing wire. THHN wire must be installed inside approved conduit and is not rated for direct burial or wet locations without an additional wet-rated jacket. Verify that all termination points, breakers, and lugs are rated for the same temperature column used to determine ampacity to avoid derating violations.

Technical Specifications

• Conductor Material: Copper
• Conductor Size: 3 AWG
• Stranding: 19-Strand
• Voltage Rating: 600 volts
• Ampacity: 85 amps at 60 degrees C, 100 amps at 75 degrees C, 115 amps at 90 degrees C
• Temperature Rating: 90 degrees C dry
• Insulation Material: PVC thermoplastic
• Jacket Material: Nylon
• Insulation Color: Blue
• Outer Diameter: 346 mil
• Weight: 189 pounds per thousand feet
• Wire Type: THHN

Standard Information

• Brand: THHNCU-GENERIC
• Manufacturer Part Number: thhn3strblumr