Our MS was recently in the body shop for some repair to the rear end. Since we weren't going to need the HPWC during this time, I threw the circuit breaker so the HPWC wouldn't be energized. When I threw the breaker, however, the green lights on the HPWC stayed illuminated. Now that we have the MS again, I verified that the HPWC delivers full power, even with the circuit breaker tripped. (I'm certain the breaker worked before because I've used it in the past to kill power to the HPWC.) I'm going to call an electrician to look things over and in the interim I've switched to my mobile charger and NEMA 14-50 but I'm very curious. Can a breaker fail in such a manner as to continue powering its circuit or is the problem likely somewhere else in the panel?