Model S comes with remote charging cable and a 240V 40A Nema 14-50 adapter capable of charging at 9.6KW, or 29 mi range per hour. Also available are adapters for the two extant pin patterns of 30A 240V dryer outlets, from which source it charges at only 5.67KW (240V 23.6A) or 17 mi range per hour.
So, when the onboard charger sees 240V power from the portable charging cable, how does it know not to pull too much amperage, if it happens that the source is a 30A outlet, so as not to overload the house wiring and trip its 30A circuit breaker? Is there a chip in the adapter that tells the charger what capacity outlet it is connected to?
So, when the onboard charger sees 240V power from the portable charging cable, how does it know not to pull too much amperage, if it happens that the source is a 30A outlet, so as not to overload the house wiring and trip its 30A circuit breaker? Is there a chip in the adapter that tells the charger what capacity outlet it is connected to?