Hoping someone can give me a quick answer on this. I'm buying a newly-constructed home and received the following information about wiring in the garage: "Home is pre-wired with #8 wire that will accept 50 amps per table, 310.16 of the national electrical code." Is that sufficient for a NEMA 14-50 or does it need to be #6? Is it sufficient for two NEMA 14-50s when we get a Model X? Thanks for any help.