THHN Cable / THWN Cable

THHN/THWN-2 cables are use in Class 1, Division 2 Hazardous locations such as those encountered in the oil, gas and petrochemical industry. They can be installed in trays, wire ways, ducts, conduit and aerially when properly supported by a messenger. They are approved for direct burial, for use in wet or dry locations, and outdoors in cable trays where a sunlight resistant rating is required.

Cable designation: THHN references the Nylon-coated conductor wire, THWN-2 the 90oC PVC insulation layer.