Got a new cable today and it came with this? Doesn't fit in my standard Tesla home socket (see pic of plug and socket)
Lol. I know. But when they tell everyone to get a nema 14-50. Didn't know they had this adaptor. Are these plugs uncommon? Forgive me, I. Electrically ignorant
Well, if you feel like making a home modification, remove the 'L'-shaped pin and you can use the same adapter in either a 14-50 or a 14-30 socket. Just remember the 14-30 adapter you showed us is limited to 30A and you will be stuck at the lower amperage even when 40A is available on a 14-50.
It's a 30A dryer plug. NEMA 14-30. Fairly common. Good for 24A charging. By default Tesla ships a 50A stove plug, NEMA 14-50. Good for 40A charging. Much faster.