Shop Nilight EV Dryer Adapter Cord 30 Amp to 30Amp 3 Prong 125V 3750 Watt Pure Copper Dryers Old Outlet New Plug Conversion Heavy Duty 10 Gauge Wires 10-30P to 14-30R 30M/30F in high quality, support 2 year warranty. Constructed with 100% pure copper with full 10 gauge wires ensuring high conductivity. The wires are stranded copper, it’s very flexible and the STW jacket is very durable. The jacket is coated with a heavy-duty flame retardant, heat resilient PVC sheath that serves as protection from the outdoor elements, wear and tear.