I don't actually think it's a problem. You can also set the ChargePoint to a lower rate like 40A.

 

You certainly could get two that could talk to each other (or a Grizzl-E Duo), but IMO that's more costly than it's worth.

Unless you are driving both cars' full range each day, limiting each charger to 24 or 32 amps should be fine to replenish enough charge for the next day. Or, just share the same charger and charge each car every other evening.

 

we have only a single 30amp EVSE for our two EVs - and it works just fine for both, as neither need charging at the same overnight - sometimes neither does. Just because you 'have' two outlets doesn't mean you 'need' two EVSE units - one unit will charge both vehicles just fine.

 

You can also get an EVSE splitter, lectron makes one, it will set the charge to the car that has priority first, once that is done, then it powers the second EVSE, you can use the maximum power the splitter can handle, no dazzle, the Grizzl-E duo is more expensive, but can be also your solution.
I have a Grizzl-e and a open EVSE, and work perfectly with the split-volt unit.

 

If a qualified electrician installed the circuits then they would have done a load calculation for your service, and you are fine. Load calculations are more complex than simply adding up all of the breakers.

However, my ”big“ charger is 32A and it is plenty - in fact my ”small” 20A charger is completely adequate. The one time that I didn’t charge before a trip a bigger charger would not have helped, so I had to stop at a DC fast charger for a few minutes. So I would second the recommendation of lowering your amperage, it wouldn’t hurt.

 

Same here, we don't use any of our home EVSEs at their max level, I even use a level 1 EVSE when ever I can, with all the ICCU problems in the past, I think charging at a reduced level is a wise choice and it may be better for battery life.

 

We've had 2 and 3 EVs at the same house at the same time, and never have I thought that we needed 2 EVSEs.

 

Having the option to charge 2 EVs reasonably fast at the same time is a plus IMO, not that we have ever had to so far, but we can if needed, specially considering the EVSEs were free thru the local utility.

 

We have 2 EVs and one Level ONE charger because we have long commutes. Never been a problem.

Figure out how many miles you typically drive each day. Then figure out how many kilowatts you need to replenish and how many hours you have to do it. Then you can do the math to figure out how much charging capacity you need.

 

We have 2 EVs and one Level ONE charger because we have long commutes. Never been a problem.

Figure out how many miles you typically drive each day. Then figure out how many kilowatts you need to replenish and how many hours you have to do it. Then you can do the math to figure out how much charging capacity you need.

Do you mean Level 2, since 120v Level one would seem to take forever, especially if you are going on long commutes, and depending upon the frequency of those commutes, you could need to recharge faster since you would be recharging all the time? I thought you had a ChargePointe charger.....

 

For those new to EVs and charging who are thinking about installing home chargers, here is some quick math that will help you figure out what you need. (calculations below ignore efficiency losses, which are small)

1. Think about kilowatt hours (KWH) like "gallons". KWH is effectively a volume measurement. Depending on which EV you have, it holds 60 - 100 "gallons" of electrons (KWH). When you drive you get X "miles per KWH". Let's say that's 3.0 so if you have any version of the EV9, except light short range, then 100 KWH x 3 miles/KWH = 300 miles of total range.
2. If you drive 60 miles per day then you will use up 20 KWH (60 miles / 3 miles per KWH = 20 KWH). This is what you need to replenish every day when charging.
3. Chargers are rated in kilowatts (KW). This is a "rate" measurement. Rate x time = KWH. Charging at 10KW for 1 hour puts 10 KWH in your tank.
4. If you need to replenish 20 KWH per day then a 10 KW (Level 2) charger will do that in 2 hours.
5. Level 1 chargers (120v) operate at about 1.5KW. So replenishing 20KWH with a Level 1 charger will take 20 / 1.5 = 13.33 hours.
6. You can do this in reverse to figure out what charger you need. Let's say you only have 12 hours to charge each day. 20KWH / 12 = 1.66KW. This is slightly more than Level 1 can provide.

In the OP's case they need to charge two cars overnight. Run these calculations on each car and then add the results. That will tell you if you need L1, L2, or TWO L2 chargers.

Hope this helps!

 

I want to thank everyone for their suggestions. I will probably go with a second level 2 charger on the second circuit. (Good tip about dialing down the charge current to keep the overall draw reasonable.) It all depends on where the charge ports end up on the 2 cars. (We haven't decided on the 2nd car yet.) Maybe one charger will easily reach both cars.

Some of the suggestions relied on knowing your usual daily commute distances. We are both retired so our daily "commutes" vary widely. One of the "perks" of having a job is predictability in EV charging! But thanks for the analysis anyway.

 

Just buy one with 20' cable. Place it central I put in two to be safe. Charge Points. One near door so guest can easily charge too.

 

We have two Chargepoints on two dedicated circuits for an EV6 and and EV9 both set to 40a charging and we literally never pay attention to either suggest a second ChargePoint as their tech Support has been excellent the 2 times I called. Both of our cars use the same plugs J-1772 meaning they are not native NACS cars.

 

 

Unless you have an unlimited supply of $$, why would you do that. Unless both of you are depleting the battery every day, you should have no issue coming up with a realistic schedule where you can charge each car on separate days. We have two EV’s (Audi etron and the EV6) with two different charge cords. I can charge both cars simultaneously using the separate 240v plugs.

 

I installed Wallbox unit with the intent of being able to share when I get anticipated second EV. You can research Wallbox sharing on the net.

 

If you’re charging at night why couldn’t you run both at 48 amps? With 200 amp service & 2 60 amp circuits it’s clear that your panel has capacity for that otherwise they couldn’t have put in the 2 circuits.