Re: car charging, was: Why is an EV's backup power ...

Nov 21, 2022 0 Replies


>


> [snip]
>
>> Now you're off on to something else, the capacity of home chargers.
>> From what I see level two chargers top out at about half that, so take
>> it up with the EV car companies and charger manufacturer's without
>> regard to using the car to power the house in an emergency.
>
> Summarizing:
>
> A "Level I" charger (AKA a "convenience charger") almost always
> comes with the car and is designed to plug into a standard
> household 120VAC outlet.
>
> Hence... it's limited to (nominally some are a bit higher)
> twelve amps/1,400 watts. About as much power as a toaster oven.

And in sensible countries with a proper voltage, the slowest charger plugs into a proper 13A 240V socket and gives out 3kW.


These will typically give your car 5 miles of range for
> every hour of charging.

So use it next week then.


A "Level II", which uses 240VAC, typically both has the
> higher (doubled) voltage and also... twice the amperage.
>
> So instead of 1,400 watts they'll be more like 6,000 watts,
> and give you 25 miles/hour of charge.
>
> These use a basic 240V outlet (the type you'd have for
> an electric dryer or electric stove, or a large window
> air conditioner..).

You have dryers that use 6kW?! I know American clothes are much larger, but still....


Pretty much any modern US home has
> the capacity, but you might have to run cabling from
> your breaker panel. (Straightforward for any licensed
> and experienced electrician or well, err, grounded,
> handy person).
>
> You can get Level II's that go a fair amount higher,
> but that gets tricky... And then there are the various
> versions of "super chargers". Your head will hurt.

Just go for it and have a 24kW charger.

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