Shop Nilight RV Generator Adapter Cord 30 Amp to 30 Amp 4 Prong Pure Copper Heavy Duty Twist Lock Male Plug 10 Gauge Wire L14-30P to TT-30R 30M/30F 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.