Comment Re:These numbers don't make sense. (Score 1) 450
You may have a 50 amp service. So might your neighbours. But if you and all your neighbours actually pull 50 amps at the same time for any significant duration, the local transformer or supply cable WILL fail. It's not designed to do that.
No electricity system on earth is designed to provide the maximum rated supply to everyone. It would be ludicrously expensive.
To keep the costs down, certain assumptions are made about the diversity of the demand (i.e. you almost certainly don't need 50 amps all the time). The existing system was designed to fit with those assumptions. Electric cars change the demand pattern, resulting in localised overloads in certain circumstances.