Automotive primary wire (GPT) is the most common automotive wire for general purpose wiring of automobiles, motorcycles, boats, RV's, and any other low voltage electrical system, including solar. Avaiable in 8 gauge to 20 gauge. PVC insulation has a temperature rating of 176F (80C). Wire is American Made and RoHS compliant. Made from pure copper strands. Meets SAE spec J1128. Manufactured in the U.S.A.