My guess would be yes, somewhat, probably. but maybe not much. As he says in the last part of the video: If it gets hot, you have a problem.

Better ask an electrician.

The devices sold as “EV wall chargers” are not really chargers. They’re simple power suppliy units, whether or not it has bells and whistles to time the charging and what not.

The actual battery charger is in the car. It will attempt to suck as much energy from the PSU as it can and it will itself balance the load and all that. Having a separate unit also trying to regulate the load seems like something that will inevitably create more heat than necessary somewhere in that chain.

Generally speaking you do not need to protect the car from unstable supply. It will protect itself.

I will still recommend getting a proper “EV charger” to ensure that it can utilize all the phases unlike a regular garage plug. Also to ensure that it is properly grounded, which can be an issue for some cars.

At least here in Europe, where we have 3 phases. It’s much better to have all 3 phases wide open and let the car suck a little on each, instead of having it overloading a single phase through a granny plug.

I know the American 2 phase circuit is different, but I still believe it’s better not to put any more heat inducing obstructions in the chain.

It’s not fucking overkill. There’s no such thing.

I’m really disappointed with the video. That dude usually knows his shit, but he’s way off the mark here. It’s just plain wrong.

Getting a smaller charger might save a few hundred, but it will also increase your chances of burning the house down. Good fucking advise, huh.

Fuck that. You’ll always want to charge as fast as your main circuit breaker will allow.