... wire is rated at 600 volts for installatTHHN: Thermoplastic Insulation (usually PVC), High Heat Resistant (90°C rating), dry ... soft drawn bare copper. · THHN Wire has primary insulation of PVC with NYLON jacket. · UL listed Stds. 83 & 1063 ... wires, Electric cable, Electrical cable, Electrical cables, PVC Insulated and Sheathed Cable, PVC insulated cable, insulated cable, instrumentation cable, power ...