Why has the electrician asked you to do part of their job?
My install requires an additional Consumer Unit and pulling the main fuse. Only the DNO or my supplier is authorised to do this. Apparently.
So here we are. I could try a different installer but who’s to say they won’t insist on the same.
Added to which you're unlikely to have anything else in the house that would use that much power over a sustained period of time, so if your electrics aren't quite up to the job then an EV charger will certainly expose that weakness pretty consistently.I would suggest its wise not connecting to an existing consumer unit. If you have a fault somewhere under charge conditions, it wont take out half the house.