I have a new construction home (3 years old) that I had the contractor install a NEMA 14-50. In the middle of the night I was notified that my car (Model 3) had stopped charging. I didn't know what the issue was as that is not presented through the mobile app. I tried to restart the charging process through the app, but it kept shutting off. The next morning I went into the garage to investigate and found that the receptacle on the NEMA 14-50 was charred. I switched off the double pole switch adjacent to the outlet and then flipped the breaker. Once I took apart the outlet, the extent of the damage was made fully aware. One of the poles did not have a solid contact and caused excessive heat to build up inside the receptacle. Luckily the charger was a Gen 2 Mobile Connector which has a built in temperature probe on the plug. This stopped a potential fire as neither the breaker or fuses tripped.