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To: chajin

To go 600 miles you need 200kwh (kilo watt hours). if you have 200 amp service in your house at 100 volts (rounding) you have 20 kilowatts maximum through the wire to your house (amps times volts equals watts). So you get 20 kilowatt hours in an hour and you need 10 times this, so it still takes 10 hours to get that much juice into the battery. If you have your own combined cycle gas turbine power plant with enough juice to power 100 homes, all at your personal disposal, it works. basically you would need 20,000 amp service at your house, 100 times what a normal house has. Then you are charged up in 6 minutes.


55 posted on 08/26/2024 10:43:46 AM PDT by brookwood (The root cause of illegal immigration- the US is rich and gives away benefits, other countries don't)
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To: brookwood

USA single family home service is 240 volt not 100. Your 120 volt appliances use one phase of the split phase of your two wire 240V feed. Nearly every city or county code is now 200 amps at 240V. That’s 48,000 watts. 200kw at 48kw is about four hours of charging time. Which would be done as the person sleeps overnight. That’s for 600 miles of range which Very VERY few people drive more than 100 miles in fact 94% are less than 30 miles and half are less than 6 miles.

https://afdc.energy.gov/data/mobile/10318

50 miles in a 5 passenger Model 3 Tesla in Texas heat with the A.C. Ripping uses 255wh per mile. This is from my drive today btw I drove from far North Texas to Addison and back to smoke at the steakhouse cigar bar. It’s a 50 mile round trip. I used 12.75 kWh for that trip which is ten miles farther than the average American commuter trio per day.

12.75 kWh at 50 amps 240V takes 70 minutes to put back that’s also real world I just plugged in the Tesla to it’s 50 amp 240V plug and it was finished in 72 minutes.

Virtually no EV in the USA has greater than 80 amp 240V charging because unlike China or the EU we don’t have 400V triple phase power to residential units like those countries do. In China 400V 3phase is everywhere why because one of the three phases to ground is single phase 240V the standard global voltage outside the USA and Japan.

My main home has 300 amp service and the steel building where the cars are is on its own panel with 200 amp service. I could charge 4 Tesla at once and two or three more from the main home if I chose too. Both the home and the steel build have large solar panel systems on them so large I export power every time the sun is up and out of the clouds which in this part of Texas is 220 days per year or more on a 30 year climate average. My trip to Addison cost me zero dollars in energy costs as the panels have long since recovered their purchase and install cost with power sold to ERCOT. My Volvo would have used 2 gallons of 93 octane to cover the same trip at $3.50 a gallon that why it’s sitting lonely and the Tesla gets all the loving these days.


97 posted on 08/26/2024 8:45:30 PM PDT by GenXPolymath
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