I apologize if this exact question has been covered already. The electrician installed our HPWC today, off a circuit breaker that is labeled 40A. He was certain that he set the dip switches for a 40A circuit (which I had thought should charge at 32A), but the car was charging at the full 40A. I asked him if that was OK, and he said it was fine. I then called the guy who did our delivery orientation yesterday and asked him the same question, and he said it was fine as well. My understanding is that it should charge at less than the amperage that the circuit breaker is labeled for, and my question is that if I set the car to charge at, say 36A, am I OK simply leaving it that way? Or do I really need to set it back further, or am I really OK at the full 40A? FWIW, this is a relatively new house with 400A total service, and he installed the wiring to the HPWC today.