The numbers in this question are for jurisdictions where the voltage delivered by electricity companies (confusingly called "hydro companies" in some places) is at 110V or 120V, and where every power outlet around a home will supply a typical 15A of power. Feel free to ask a question with the status in jurisdictions where the voltage is 220 or 240, or to provide an answer relevant to these jurisdictions.
I am hearing and reading conflicting rumors about the way, looking forward, to prepare a garage to have a power outlet that makes it possible to charge an electric car the fastest.
A salesperson (for the leading T-branded electric vehicle) mentioned that one can contact one's Hydro company and, rather than the usual 110-120V / 20A that is commonly available at kitchen counters and near the clothes dryer, one can request installing a 120V / 90A outlet in one's garage. Doing so may be expensive since the hydro company may not have 90A near one's home.
In government flyers and news magazines, the talk involves not increasing the amperage, but the voltage. Installing either 240V (A?) or, best, 480V (A?) outlets in one's garage is the way to go.
Where is the truth? I understand that high voltage is most useful for moving electricity over long distances. But in this scenario it makes more sense to have higher power through wattage. Could this be an evolving standard—one that may not crystallize for a while?