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this post was submitted on 15 Sep 2023
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A fair question. Depends on the house. 100-200 is common, depending on the age of the house. 100 or less if your house predates central air conditioning, and 150-200 is far more common in the last few decades. Most people charge overnight, and they're not using much else. If you truly have a smaller connection, even 20A @240V is surprisingly useful. Or hell, a normal outlet.
That may be your battery's capacity, but that's not necessarily your draw. How big is your gas tank? Do you give it ~15 gallons each day? My car gets about 3.5 miles per kWh. If I drive it 70 miles, that's 20 kWH and then the car stops charging. And I pay about $2.50 for it. What would gas cost?
Solar direct to car is actually a terrible idea. Just hook something up to the grid if you want solar, but it's pretty cheap without. You're overthinking it, probably because your 80 kWH per day number is so out of whack.
Again, no. Well, it's cool if you can get it but it's really not needed because home electricity is generally way cheaper than gasoline.