What's involved in pre-wiring for Electric Cars? I see that KB Homes already does this but I'm using a different builder. I think I already have a 220V outlet but will be using it for a freezer in the garage.

* Should I ask for two more and if so where should I place them? I hope they start coming with options to charge from both sides of the car otherwise I'd need a cable to drop from the ceiling to be convenient.

* Can I just split the existing outlet three ways and run the wires along the walls later?

* What kind of amperage will the (3500sf) home need for this?

* The builder charges $220 per outlet. Is it worth it?

Thanks!