My 2018 Leaf has the dual-voltage EVSE cord, which can plug into a 120v outlet, or a 240v outlet (with 14-50P plug). Is it reasonable/legal/safe to plug the EVSE (in 240v configuration) into a 30amp dryer outlet ? The dryer outlet has a 14-30R receptacle and is protected by a two-pole 30amp breaker. I imagine making a 50ft extension cord with 14-30P plug at one end and 14-50R receptacle at the other end. Would use either 8-4 SJOOW cord, or it appears to be cheaper to buy a 50amp 14-50 extension cord and replace the plug with a 14-30.