swimmer_spe
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- Apr 29, 2015
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An electric vehcile car charger, what are they rated? Amps for 220 volts?
Some do 40A @ 250v which is 10kW. If your battery is 85kWh it'll take ~8.5 hrs. to charge.
The F150 truck battery stores ~150kWh of energy & may take 16 hrs. to charge unless they really pump some charge into the thing. In that case I'd say they are trading battery lifetime for fast charging.
Depending on the size of your house, you'll probably need 200A service for your main panel.
A 100A sub panel seems to be popular.
Good start.House is already wired for 200A.
Good start.
For the near future, if I load our 200A panel to 160A I can expect a 3.3% voltage drop at the panel, 232V/116v from 240v/120v.
An outlet 100' or 200' away needs some number crunching.
What is the minimum input voltage your candidate charger can stand?
What distance from your main panel?
How many vehicles charged at the same time?
Largest vehicle charged?
Look B4 you leap.
Without installing an inverter you're limited by the internal inverter.100A @ 240v = 24kW.
If the vehicle battery charge rate is limited to 8 kW it'll take ~3 hours to bring up a 24 kWh vehicle battery.
There are several tradeoffs here.
Tesla batteries might have 80 kWh capacity. By now battery sizes & charge rates might have stabilized due to consumer supply & demand.
I'll probably not live to see it, but if the greens get their all electric way, gas heating, cooking, and water heating will eventually go away. Some places in California are prohibiting new gas connections. Often CA leads the way, and not in a good way, for the rest of the country.Sounds like I could do this with just my existing panel & maybe even with just a 100A main panel. Rarely do we pull 60A from our panel, our furnace & water heater are NG.
Our average draw is 6A, 1.5 kW.
I had Time of Day metering in my first house. I had a simple timer on my electric water heater to take advantage of it. That was over 35 years ago, and haven't had it since. A lot of EVs have the ability to time when they start charging to take advantage of off-peak pricing. As far as I know it isn't an option in my area, but we have gas heat, clothes dryer, gas cooking, and water heating along with a gas fireplace. They do have an option that allows them to control my AC unit during high demand times. I haven't signed up for that because the savings just aren't that great. Like $25 a year.I had a guy I work with that built a total electric home about 40 years ago and he had time of use rates and his hot water and other things were set to store a lot of hot water on non peak times plus his wife timed when she would do laundry and such to take advantage of the lower rates. He had a complex time of day meter that kept track of power but also when it was used.
I wonder if they still do this and when all these cars get hooked up will the peak hours move? Do any of you guys planning EVs have time of day meters?
I had Time of Day metering in my first house. I had a simple timer on my electric water heater to take advantage of it. That was over 35 years ago, and haven't had it since. A lot of EVs have the ability to time when they start charging to take advantage of off-peak pricing. As far as I know it isn't an option in my area, but we have gas heat, clothes dryer, gas cooking, and water heating along with a gas fireplace. They do have an option that allows them to control my AC unit during high demand times. I haven't signed up for that because the savings just aren't that great. Like $25 a year.
With #6 copper you could run a 300' cable from the main panel & stay within a 5% drop from 240v.I put in a 50amp range outlet with a 50amp GFCI breaker.
I had a guy I work with that built a total electric home about 40 years ago and he had time of use rates and his hot water and other things were set to store a lot of hot water on non peak times plus his wife timed when she would do laundry and such to take advantage of the lower rates.
I used 4/4/4/2 aluminum Service Entrance Cable.With #6 copper you could run a 300' cable from the main panel & stay within a 5% drop from 240v.
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