Shop Nilight RV Locking Adapter Cord 30 Amp to 50 Amp Pure Copper Heavy Duty Dog Bone Plug 10 Gauge Wire TT-30P to SS2-50R 30M/50F 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.