Shop Nilight RV Locking Adapter Cord 15 Amp to 30 Amp Pure Copper Heavy Duty 10 Gauge Wire ETL Listed 5-15P to L5-30R 15M/30F Weatherproof Cord for RV Camper Caravan Van Trailer in high quality, support 2 Years Warranty. The cord is coated with a heavy-duty flame retardant, heat resilient PVC sheath that serves as protection from the outdoor elements.