Cars, it's electric! Do Do Do
- Thread starter A Potted Plant
- Start date
qclabrat
Well-Known Member
How long to charge to 80%?
I'll let you know!
my 120v plug in does 1% per hour(ish) - will try to leave close to 100%
my guess from all the reading....
I'm collecting the material for a 40amp line - that should be 7-10x faster
Destination chargers should be 15-20x faster?
Hopefully won't need a supercharger.
Mahnken
Well-Known Member
If you're not going too far from a panel I might have all you need from when I ran mine. 6awg and 3/4" conduit.
Thanks - I have some #6, but the breaker is only rated for #8!
I'll also be inside the wall, although I may run conduit so the next person could run something beefier and direct wire.
Mahnken
Well-Known Member
.
Beef it up to a 50amp circuit! More charging power!
Sub panel is at at 1.25 main with 40 amp addition in the winter because of some resistance based heat.
I think that is the max?
Mahnken
Well-Known Member
Oh I dunno, been a while since I pretended to be an electrician 🤣
but did you stay at a holiday inn express last night?
@Mtbdog -
I have actuals on a sub panel - and want to add a 40amp breaker (maxed at 32 draw)
actuals + 40 are less than 1.25 the 60 amp main. (well close enough)
is that how to do a sub panel? or is that a main?
it is detached, over insured garage.
:Elmo fire:
uh oh - I think I got it backwards.........
What size wire is feeding the subpanel? From what you're saying, you have a 60A main breaker in the subpanel, or a 60A breaker feeding the subpanel, or both?
I can easily be wrong, but I thought it was 80% for sizing, not 125%. 125% will trip the breaker...
60A*80%=48A. Are you actually drawing more than 48A under normal conditions with the 32A charger running?
there is something with actuals vs theoretical max.
certainly if pulling more than 60 it will trip, but I can have 100amps of breakers in there if they don't all pull their max.
Continuous (3hr+) is up-rated, cause of heat. and motors have a start-up.
perhaps 6awg out to the panel. I can pull a new wire, or put some load shedding/priority thing out there.
I have 200amp service to the house (above ground) - and wow - in the summer, 2 AC units, pool pump, and now a car..,
winter - resistive heat for greenhouse, small electric heater in barn, hot tub (currently OOS)
Also, what happens when the power goes out and the generator kicks in? no sense charging the car, not even sure if it is clean enough to do that.
I think imma gunna need to call someone to sign off on it.
qclabrat
Well-Known Member
Don't you also have solar? Maybe consider a Powerwall or something similar. I'm going to need a sub panel, no space in the current box. Good thing is that my work has free charging if I can get in early to reserve a charger
No solar - have a b/u generator for outages.
GM power solutions has some weird combo battery and car as house b/u, which can use solar.
Probably costs more than the car.
That's why I asked what your actual expected electrical load is in the sub panel. That's how you size it.
If you're up to 48A in usage, 60A subpanel is good at 80%. Note that electrical car is a continuous load, so having more of a buffer there is better. It's pretty common that people are melting non-EV rated Leviton 50A outlets when having chargers plugged in. Hard wire the EV charger. Also allows you to not have to do GFCI breaker for that outlet which is code now.
Motor loads are taken into account with the breaker curve, you don't really need to plan for that with the wire, it's such a short inrush.
If you have a generator and it isn't sized properly for your load, you need to have something that disconnects some of those circuits. Harder to do if you just have the ATS before your main panel.
Seems silly to have the generator charge your EV however I wouldn't be too concerned about dirty power. It just gets chopped up to DC anyway.
Mahnken
Well-Known Member
I've got a Tesla wall charger at home but haven't had a Tesla for over a year. Bought this one for charging the rivian and haven't had any issues on over a year of consistent use.
NACS Charger To J1772 Vehicle | AC | UL2252/CSA-C22.2 Certified | The
The first UL2252/CSA-C22.2 certified NACS to J1772 adapter. Key Features : Power : Can charge up to 80A and 20kW. Safety and Security: Our adapter locks in while charging, ensuring no unplanned disconnections or thefts. Your vehicle locks the adapter for the charge port. Protection : IP67...
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