^^^I was curious about the voltage levels needed to charge an EV car, so according to this link, the standard 120V line would work -- but it would take an eternity to fully charge your EV car.
They're saying Level 1, 120V; Level 2, 208-240V, and Level 3, 480V or "fast chargers".
For most homeowners, they've already got 120V. SOME homes, mine included, have 240V in either the garage or in a separate shed/shop.
As this link recommends the 240V option to charge your EV, Pete is correct in pointing out that putting in that capability in your home is an expense that most EV car owners wouldn't automatically think of. And the impact to the overall grid if 20% of homeowners suddenly "upgrade" to 240V somewhere in their home and they begin to use it steadily is also not factored in.
I come back to my main point -- we're not ready for EV
anything. Gotta build the infrastructure FIRST -- not backasswards -- to make it work. And that takes time, capital investment, and the will to make it happen.
And we ain't there yet, if ever. Exploding lithium batteries, the lack of mineable lithium access, and other financial and political issues put all of that as a great big NFW until those elements are either resolved or a different technology comes about.
https://climatebiz.com/voltage-to-charge-an-electric-car/