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Charging

32156 Views 60 Replies 32 Participants Last post by alansh42, 4 mo ago

DrDave

Discussion Starter · Jun 18, 2021

Besides getting the charger anyone have specs on what's needed in the garage?
Hardwired or 14-50 plug?

21 - 40 of 61 Posts

NobodyInParticular

· #21 · Feb 21, 2022

EV6FE_Ted said:
Level 2 requires a dedicated 240V circuit, up to ~80A

The difference between charging at 11 kW and 9.6 kW (NEMA 14-50 connector) is maybe one hour if you actually discharged the battery to zero. That's ... basically irrelevant, IMO. I wouldn't worry too much about optimizing for the maximum possible power draw.

Since we're a dual-EV household, I don't feel a particular need for internet connectivity from my home charger, and we don't want to futz around with moving the cable back-and-forth, we got an HCS-D50P from Clipper Creek. It'll grant each car 20A when both are plugged in, or one car up to 40A if only one is charging. If one car finishes before the other, then the second gets the full ampacity. Both cars charge up completely overnight. Both cars warm themselves up in the morning. We've got more than enough margin to top off both cars using off-peak cheap electricity. It rocks.

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alansh42

· #22 · Feb 22, 2022

TT97 said:
Oh, that makes more sense.

From their site All-New 2022 Kia EV6 Crossover | Meet Your Future Electric Car | Kia (click on "At Home Charging"):

An 11kw on-board charger allows for a Level 2 240v recharge overnight from home, enabling you to have a full battery every morning.

J1772 standard is single phase only.

I think that's pretty much it. J1772 provides a maximum of 19.2kW -- 80 amps at 240VAC. That requires a 100A power drop which most residences won't support. Continuous loads can only be 80% of the maximum load. Anything higher requires a DC charger.

It looks like the EV6 supports up to 11.5kW -- 48A at 240VAC. That means a 60A power drop and an EVSE that supports it. 60A requires direct wiring and heavier wire. A higher amperage circuit will work but the extra capacity won't be used.

50A is a bit easier to deal with (lighter wire and you can use a 10-50 or 14-50 outlet) and there are more EVSEs rated to work with it. This is an effective 9.6kW -- 40A at 240VAC.

If someone can swing by a 19.2kW station, we can see what the actual max for the EV6 is.

And yes, it is a bit confusing that the actual current draw is 80% of the specification.

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Burner

· #23 · Feb 22, 2022

I had an electrician install a 60A circuit breaker in the panel, then hard-wired a 48A Wallbox charging station which delivers 48A and 11kwh to the car. More than enough for what one needs at a residential address. For purposes of simplicity, assume 11kwh charging, for a max of 7 hours if you were to charge from 0 to 100%.

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camo

· #24 · Feb 22, 2022

Burner said:
I had an electrician install a 60A circuit breaker in the panel, then hard-wired a 48A Wallbox charging station which delivers 48A and 11kwh to the car. More than enough for what one needs at a residential address. For purposes of simplicity, assume 11kwh charging, for a max of 7 hours if you were to charge from 0 to 100%.

May I ask how much the total costs? My wife and I are still trying to decide if we want to go this route,

Burner

· #25 · Feb 22, 2022

The electrician was a friend of mine, so did not pay anything for labor. Materials cost was ~850$:

Wallbox 48A - 730$
60A circuit breaker, 1" conduit, gage 6 wires - ~100$

The dependencies for getting this installed were:

total power in your panel. I had already a 200A system, so adding a 60A breaker was possible.
physical space in your panel. The 60A breaker is pretty bulky, and the gage 6 wires do not help
distance from the panel to the location of the charger. I had space ~3ft away, and used ~8ft of conduit to get there.
once we had everything figured out and all materials on-site, the actual install was ~1hr.

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madopal

· #26 · Mar 3, 2022

I echo these sentiments. Just got a Chargepoint Flex. They messed up and gave me a 50 amp breaker, so I'm only getting about 9kWh right now. But I've got them coming back to up me to 60A in the hopes I get close to that 11kWh to have a < 8 hour full charge. Current rate at just under 9kWh still let me go from 20-100% in just over 11 hours. The Chargepoint says it can do 50A, but if the vehicle can't pull more than 11kWh, then I don't think it'll be worth going to a 70 or 80 amp breaker (have 100 amp box in garage). I might try tho, just to see if it'll go over 11kWh.

Big Butter Jesus

· #27 · Mar 3, 2022

My house had a 40 amp circuit with a 14-50 plug already in the garage. I didn't bother spending the money to upgrade it. I charge at 7.5kw(32amps) right now and it's been plenty sufficient.

wlahay

· #28 · Mar 29, 2022

I'm going through all these posts and, there is a tonne of information here. Enough to seriously confuse a guy new to EV's and EV charging. So, if I want to charge my EV6 at max rate 11kWh, what breaker and wire is needed. I think I understand a 60amp breaker is needed to meet the 50amp load of the EVSE (please correct me if i'm wrong?). Form there, what wire is needed for the 50+amp load?

Thanks!

Big Butter Jesus

· #29 · Mar 29, 2022

wlahay said:
I'm going through all these posts and, there is a tonne of information here. Enough to seriously confuse a guy new to EV's and EV charging. So, if I want to charge my EV6 at max rate 11kWh, what breaker and wire is needed. I think I understand a 60amp breaker is needed to meet the 50amp load of the EVSE (please correct me if i'm wrong?). Form there, what wire is needed for the 50+amp load?

Thanks!

I would suggest consulting with a licensed electrician for wiring questions (The answer is probably 4AWG, but there are other factors and electrical code is different in different places. These are pretty big circuits by residential standards, and need to be treated with a bit more care than little 15 amp one). Keep in mind that you're going to have to hardwire an EVSE over 50Amps.

FWIW, I had an existing 40 amp plug that gives me 7.4kw and have no problem with the car's charging speeds at home.

ag5bpilot

· #30 · Mar 29, 2022

wlahay said:
I'm going through all these posts and, there is a tonne of information here. Enough to seriously confuse a guy new to EV's and EV charging. So, if I want to charge my EV6 at max rate 11kWh, what breaker and wire is needed. I think I understand a 60amp breaker is needed to meet the 50amp load of the EVSE (please correct me if i'm wrong?). Form there, what wire is needed for the 50+amp load?

Thanks!

I'm in the US, so the regulations might be different, but the physics will be the same.

For the maximum charge rate (48A) you need a 60 amp hard-wired circuit AND you need a 48 amp EVSE. Many, probably most, EVSEs are only 40 amps. The highest capacity wall socket is 50 amps, which allows you to charge at 40 amps. If having an EVSE that you can unplug is important to you, then go with a 50 amp circuit and a 40A (or higher) EVSE.

For the appropriate wire gauge, you should ask an electrician because there's more to it than just the amperage. The length of the run might dictate a larger gauge wire, for example. Normally, you would want 6 gauge copper wire for up to a 55 amp circuit, so that would work for the 50 amp breaker and 40 amp EVSE combination. I believe you need 4 gauge wire for up to a 70 amp circuit, so that would be used for the 60 amp breaker / 48 amp EVSE combination.

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alansh42

· #31 · Mar 29, 2022

Keep in mind is that because the EV charger is a continuous draw, the electrical code requires it to be no more than 80% of the circuit's maximum capacity. The EV6 seems to have a maximum of 48A at 240v, so that means the circuit must have a maximum rating of 60A if you want to use the full capacity.

That means hardwiring (the max plug anyone uses is 50A), a 60A breaker, and wire sufficient for 60A. For nonmetallic sheathed (NM, aka Romex), you'd need 4 gauge. There are other wiring standards like THHN that are higher capacity but require a conduit. And there are other factors like ambient temperature and length.

Things to consider are, how long of a run (heavier wire/conduit is more expensive) and whether you want to have an outlet that can be used for other purposes (RV, welder).

I ended up putting in a ChargePoint flex with a 50A circuit. This required a 65-foot run from my service entrance, so it's just 6/2 (6-gauge 2 conductor wire) Romex with a 6-50 outlet. This provides a 50A 240v only outlet. The other option is a 14-50 outlet, which is dual 120/240v which is a little more flexible, but I don't really have a use for it and it requires a third conductor which is more expensive.

I chose the ChargePoint flex because it seems well-rated and my electrical utility gave me a $250 discount on it. This allows charging at 9.6kW.

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wlahay

· #32 · Mar 29, 2022

I am looking at the ChargePoint as well and want to get the full 11kWh if possible as well as future proofing my installation.

wgarym

· #33 · Mar 29, 2022

I find this site provides useful perspective on the actual difference in charging times for different amps.

evcompare.io

Electric car charging cost and time calculator

evcompare.io

Dks209

· #34 · Apr 8, 2022

wlahay said:
I'm going through all these posts and, there is a tonne of information here. Enough to seriously confuse a guy new to EV's and EV charging. So, if I want to charge my EV6 at max rate 11kWh, what breaker and wire is needed. I think I understand a 60amp breaker is needed to meet the 50amp load of the EVSE (please correct me if i'm wrong?). Form there, what wire is needed for the 50+amp load?

Thanks!

I went with a 60 amp breaker and hard wired it with 3 gauge and it has been working wonderfully. I'm a "rather safe than sorry" kind of guy though.
I also went with the ChargePoint charger, and my cable run was a mere 3 feet lol luckily I could mount it just opposite the wall of my breaker panel

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viper2008vert

· #35 · Apr 16, 2022

I currently have a level 2 EV (hard wired) charger I've used for my Nissan Leaf since 2011 in my garage. My dealer tells me my First Edition EV6 will arrive in 2 weeks. Will this charger work with my EV6? I read a million posts and can not find an exact match for my question. If not, does anyone know if an adapter is for sale which will fit my J1772 connector to charge my EV6?

KiaevCan

· #36 · Apr 16, 2022

viper2008vert said:
I currently have a level 2 EV (hard wired) charger I've used for my Nissan Leaf since 2011 in my garage. My dealer tells me my First Edition EV6 will arrive in 2 weeks. Will this charger work with my EV6? I read a million posts and can not find an exact match for my question. If not, does anyone know if an adapter is for sale which will fit my J1772 connector to charge my EV6?

J1772 is standard across all US EVs so it’ll work.

viper2008vert

· #37 · Apr 16, 2022

KiaevCan said:
J1772 is standard across all US EVs so it’ll work.

Good to know. Thank you.

Tim W

· #38 · Apr 16, 2022

viper2008vert said:
Good to know. Thank you.

Correct. You can use all L2 chargers EXCEPT Tesla destination chargers. For that, you need a Tesla to J1772 adapter, such as this Lectron unit https://smile.amazon.com/Lectron-Charging-Compatible-Connectors-Destination/dp/B09M6KFV9T/

Tax2022

· #39 · May 12, 2022

Big Butter Jesus said:
My house had a 40 amp circuit with a 14-50 plug already in the garage. I didn't bother spending the money to upgrade it. I charge at 7.5kw(32amps) right now and it's been plenty sufficient.

Hello, how are you limiting the amount of amps your car can pull? I have a 30 amp circuit with 14-50 plug and looking for good EVSE options. I do not want to upgrade from 30 to 50 amps.

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j5i7

· #40 · May 12, 2022

Tax2022 said:
Hello, how are you limiting the amount of amps your car can pull? I have a 30 amp circuit with 14-50 plug and looking for good EVSE options. I do not want to upgrade from 30 to 50 amps.

You are probably best off buying an EVSE which allows you to adjust the maximum current like the Grizzl-E Level 2 EV Charger or Chargepoint Home Flex. In your case you'd set the EVSE to 24 amps (80% of 30). Alternatively, you could try to buy a 24 amp EVSE (less common), or buy a higher amperage EVSE and rely the the car's "reduced charging" setting. I wouldn't recommend the latter as you'll eventfully forget to have it on reduced charging and create a hazard.

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