Quote:
Originally Posted by FLYIN'
I would go with #6 if you want to max out a 50amp circuit but few chargers can power vehicles at that amperage. Most chargers can be set to specific maximum rates based on the vehicle. Tesla even stopped selling the dual chargers that used to need 2 separate 50 amp circuits. They were dimming house lights during charging.
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Remember 80-20 rule. Your circuit breaker should be 20-25% higher than your anticipated amp.
So if I want to go with 40A charger thus 50A breaker. 8-gauge wire is rated for 40A so no point of going 6-gauge + its 2x the price and you only gain little.
Got to ask your self if leaving the car overnight do you really need highest amperage? Even going 32A(vs 40A) with penalty of ~5miles/hr will save you $$ on charger, gauge cables etc..
Lastly you don't really stress the system just because it can go that fast...