Bonded Parallel Trailer Wire is designed especially for RVs, and boat utility trailers. Bonded to form parallel multi-conductor cables. All copper strand core within general purpose thermoplastic (GPT) insulation The thermoplastic insulation operates satisfactorily between extreme temperature. Temperature rating of 80C (176F). Rated at 600Volts. Normal cold temperature rating of -30C (-22F). Meets or exceeds S.A.E. J1128 specifications. Trailer Wire is resistant to grease, oil and acids.