30 AMP EV Dryer Extension Cord: It is suit for Level 2 EV Charging such as Tesla Model 3, Model S, Model X, Model Y, as well as 30 Amp 4 prong dryer. You should get this "Just in case" you encounter a condition where you need more than 50 FT. Be prepared and have extra supplies for the "Just in case" scenario. Great extension for those who need the extra cord due to the placement of the EV/Dryer. It can be used indoor, charging station, campground, backyard, wherever you need it. UL Certified: The extension cord is internationally UL certified, can be use in both the U.S. and Canada. Wires meet the safety and quality guaranteeing. Features NEMA 14-30P & NEMA 14-30R connections and is rated for 125 volts/3750 watts and 250 volts/7500 watts.