I just installed an electric water heater which has way more draw than the Tesla charger and it has the same exact connectors. To my knowledge, they're standard UL approved connectors. If there's melting it's because the connection wasn't properly made/torqued down.Yes it is! They designed it, they produced it, they installed it including the cable and the fuse box! You can make excuses all you want but crap is crap!