To all...watch today's IEVS podcast where (starting at 1:01:45) Tom discusses in detail the difference between hooking up circuits for standard residential appliances vs hooking up circuits for AC high-amp-charging. He frowns on solid-wire romex. Recommends THHN in conduit or a metal-jacketed cable, probably stranded conductors with industrial crimp terminations. It's not just the wire gauge...contact resistance at the terminations can play a big part, too, both with creating heat and remaining tight through repeated expansion/contraction process when the terminations heat up over time. The connection torques, outlet grade, bending radius, etc also play a big part. It's enough put the fear of God in you, especially if you DYI'ed your installation using Home Depot components.I’m not sure what he used, however he did say it was 60 amp wire just like what was coming off the charger.