Quote:
Originally Posted by jaffles
Agree home charging is a sad joke and a bit of a feel good ploy on the dealers behalf for new buyers.
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You are either misunderstanding how home charging works, or spreading FUD.
I'm on my 6th EV (2 of those in my current fleet), still using the original 240V Siemens home EVSE I had installed ~15 years ago.
Works perfectly, can charge any car from 0-100% overnight, not that any of my cars ever reach 0%, or that I need to charge them more than once/week. But when I do, I plug them in in the evenging, and it is fully charged by the morning.
Quote:
Originally Posted by jaffles
In Aus the general purpose wall socket charger that comes with the car is 240v/2kW, but its capped at 2 amps not to overload the home circuit even though its 10amp.
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Sorry, that makes ZERO sense, or you are misinformed.
Any circuit can be wired for any level of current. Depending on the intended use.
In the US, all 120V general use circuits are sized for 15-20AMPs per US electric code. 20A for kitchen/laundry. US homes also have at least one (usually 2+) 240V circuits wired for 30A-60A. I repurposed one of those for my EVSE.
The usual limit is that total load should not exceed 80% of the breaking rating (e.g.: 16A max for a 20A breaker).
There is no way in hell would an Australian 240V circuit by capped at 2 AMPs. Perhaps you meant 20 AMPs?
Otherwise, W == V*A == 240 * 2 = 480 Watts --> that circuit will get tripped by a couple of decent sized light bulbs or a desktop computer!
Do you guys have hair dryers down under? If you do, your circuits must be sized for at least 15 AMPs (hair dryers run at 10-15 AMPs).
Quote:
Originally Posted by RockCrusher
Just last week paid $287 to have a 220/240VAC outlet installed to use with the BMW charger and adapter cable to charge my new i4.
Approx. 4 times faster. At some point I noticed the A/C current charging limit was set to unlimited. I tried setting it to 24 amps and 40 amps and then back up to 48 amps. At any current charging setting I cannot detect any signs of any problems. And the charging speed with the charging current limit set to 40/48amps is quite impressive.
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My EVSE (aka L2 home charger) is plugged into repurposed electric dryer outlet (washer/dryer room shares a wall with the garage, as is typical in most US homes). IIRC, it is wired for 40AMPs, and I've been running it soft limited to 80% of that, or 32 AMPs.
32 AMPS at 240V == 7.68KW per hour of charging.
Most EV batteries are sized between 50–82 kWh. Mine are 82 kWh NCA and 72.8 kWh LFP. Basic math will tell you that I could fully recharge both in 10.6 or 9.5 hours, not that I've ever had a chance to charge for that long since the lowest I've ever gotten any EV battery was in low teens.
It's worthwhile to point out that my 82 kWh Model 3 can (optimistically) go for 353 miles on a full charge, at the cost of $0.14 per kW. Thus $11.48 for 353 miles, or $0.0325 per mile.
The best either of my ICE cars can do is 27 MPG on the highway (best case scenario). At the current ~$4.00 per gallon (for cheap stuff, $4.79 for premium), that's $0.1481 per mile.
Or 4.56 multiple delta between the two powertrains.
Or, assuming 10K miles/year, $1,156.27 cost savings per year of EV - ICE. Or a full set of track tires worth of savings per year!
YMMV,
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