#4/O-1C (19STR) THHN/THWN-2 BLK 600V

THHN is a thermoplastic high-heat-resistant, nylon-coated wire. It’s designed with a specific insulation material, temperature rating, and condition of use for electrical wire and cable. Extremely popular as an inexpensive building wire, THHN wire serves its purpose admirably and can be used for wiring machine tools, control circuits, and certain appliances.