Quote:
Originally Posted by Isaac Zachary
In Mexico you get a 110V (or 120V?) service with only 30 amps total for the whole house.
In the USA a lot of us rent our homes/apartments. And even if we do have a way of installing a charger it is usually harder to get much more than 240V at 30 or 40 amps (well actually 80% of those amps or 24 or 32 amps respectively). The more you go from there the more likely you need your house service upgraded (total amperage at pole to home) although some homes may need an upgrade even with a 20 amp (16amp) increase.
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I'm quite surprised how terrible the electric grid is over there.
With 110V and 30A, you've only got 3,3kVA for the whole house.
A normal power outlet here has 3,5kVA (maximum, not sustained).
As for 240V, single phase systems, for that kind of power you'd probably want a higher voltage/more phases as that would require rather thick cables.
What where they thinking with this whole split-phase 110/220Vsystem over there?
3-phase 220/380V is more efficient and requires less copper for a given power requirement as well as giving you the option of running 3-phase motors directly from the grid.
Plus let's not forget that you can run RCDs from the breaker box.
/rant