My garage has 4 110V outlets. When I charge currently I get 120V/12A of charging. Presumably each outlet is rated for 12A of current. Is there any way I could combine two outlets into one and get 20 amps of charging? from the quotes I've received for Nema 14-50, the physical 50 amp wire and fishing through the basement into the garage is the largest expense. I've been 'okay' with 12A but would be happier with 20.