Quote:
Originally Posted by jb66
How come you can get 12kw showers but car chargers are only 7.4kw?
|
Because they make certain assumptions about what else you already have installed in your house and then mass produce the sorts of chargers most people will actually be able to use.
Your house may have a 60A main fuse (though it could be 100A) and if you have a powerful electric shower then running that at the same time as a powerful car charger will cause you serious problems.
I suspect if you get your home electrics surveyed and demonstrate that you have the available capacity you could make a case for having a more powerful home charger installed.
In the future if we’re going all-electric in every home in the street and charging 1 or 2 cars on every driveway we’re all going to end up with three-phase supplies, which you only really see in business premises at present. Our church has a 3-phase supply and the consumer unit looks like it could run a space station.