I had an electrician install a 50amp breaker in a subpanel that runs a 14-50 outlet. I use a Tesla Wall Charger and my M3 RWD will only charge at 32 amps anyway. But when I used it the first time after about an hour the breaker tripped. It was so hot I could not touch it even for a second. The breaker the electrician put in was faulty and was a compatible, but not the same brand as the panel. I replaced it with the same brand and the problem was solved. Even the 50 amp breaker running 32 amps gets warm to the touch but that is expected. I also cleaned the breaker bar with a green pad. I have a Hubbel 14-50 outlet, and while it cost me, that is a nice robust outlet. Good idea to check the temperature of the breaker, outlet, wire etc to see if things are overheating. The good news is that the breaker did what it was supposed to do and tripped open.