This building wire has a strong nylon jacket with PVC insulation to help seal out moisture, heat, oil, and gasoline. It is suitable for use in conduit and cable trays for services, feeders, and branch circuits. Building Wire, Wire Size - Wire and Cable 6 AWG, Wire Type - Wire and Cable THHN, Jacket Material - Wire and Cable Nylon, Insulation Material - Wire and Cable PVC, Wire Color Green, 65 Max. Amps, Spool Length 500 ft., Stranded, Nominal Outside Dia. 0.249 In., Packaging Plastic Spool, Voltage 600, Stranding 19, Temp. Rating 194 Degrees F, Standards UL,E34382, Number of Conductors 1