Thhncu-generic thhn12solblk500r Thhn 12 Awg Solid Copper Wire

Product Description

The THHNCU-GENERIC thhn12solblk500r is a 12 AWG solid copper THHN building wire rated for 600 volts and 20 amps, supplied on a 500-foot spool. The conductor is bare copper with a PVC insulation layer and an outer nylon jacket, which gives it the dual THHN/THWN-2 profile common in commercial and residential rough-in work. The black insulation color follows standard color-coding conventions for branch circuit wiring. The outer diameter measures 119 mils, and the spool weighs approximately 11.5 pounds based on the published 23-pound-per-1000-foot unit weight. Licensed electricians and electrical contractors install this wire in conduit for general-purpose branch circuits.

This wire is suited for use in dry locations at its full 90 degrees C temperature rating. Typical applications include branch circuit runs in EMT, rigid metal conduit, or PVC conduit in residential, commercial, and light industrial settings. It is commonly pulled for 20-amp general-purpose circuits, appliance branch circuits, and panel feeder sub-runs where solid 12 AWG conductors are permitted by the governing electrical code. The 500-foot spool length is practical for mid-size jobs where a full 1000-foot reel is more than the project requires.

Key Features

• Solid bare copper conductor for reliable conductivity and firm terminal connections
• PVC primary insulation with nylon jacket rated for THHN dry-location service
• 600-volt, 20-amp rating suitable for standard 20-amp branch circuits
• 90 degrees C dry temperature rating meets NEC ampacity table requirements for THHN conductors
• Black insulation for compliance with branch circuit color-coding conventions
• 500-foot spool reduces material waste on projects that do not require a full 1000-foot reel

Compatibility

Designed for use in conduit-based wiring systems where NEC-listed THHN 12 AWG solid copper wire is specified for 20-amp branch circuits in dry locations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit or panel before pulling, terminating, or splicing conductors. Solid conductors should be terminated at screw terminals rather than wire-nut splice points where the authority having jurisdiction requires it. Do not install this wire in direct burial or continuous wet locations without confirming the jacket rating meets the specific application requirements.

Technical Specifications

• Wire Type: THHN
• Conductor Material: Copper
• Conductor Size: 12 AWG
• Stranding: Solid
• Voltage Rating: 600 volts
• Ampacity: 20 amps
• Temperature Rating: 90 degrees C (Dry)
• Insulation Material: PVC
• Jacket Material: Nylon
• Insulation Color: Black
• Outer Diameter: 119 mil
• Spool Length: 500 feet
• Unit Weight: 23 pounds per 1000 feet

Standard Information

• Brand: THHNCU-GENERIC
• Manufacturer Part Number: thhn12solblk500r