I watched the guy fix the burned out connections. He said it happens sometimes, especially when you have a 48amp draw for hours. 1, I've never charged my car at 48amps, and besides, it's not "for hours" at a time. He then said something about the hot and cold causing expansion and constricting of the connections over time. This makes no sense whatsoever. I sent them an email to run one continuous cables from the breaker to the charger unit. He replied that's illegal to run that long of a conduit, and you need a splice. Again, this makes no sense at all. Common sense tells you you can do this with wires inside a metal conduit, just use a larger wire gauge. He said everything is in code, that the splice was in a metal box so there's no way my house could of caught fire. I'm having a couple of other electrical contractors come out to take a look at their set up. If their codes aren't up to date for car chargers then they should of known this and gone above and beyond to make sure it never happens. I've been giving Tesla hell for giving me bad chargers when the whole time it was the electricians who screwed up. I'm getting an education but it's still aggravating. There was no reason for that splice to be there. And I'm sure they used a Polaris Block splice, if that's what you call it. It was a pretty heavy duty splice.That can be done safely, but at these amperages, either a split bolt or a Polaris block are used. Either of those create a great splice, but it has to be done correctly.