Best EVSE Setup for Two EVs on One Circuit?

[Vulnox]

We run two Emporia EVSEs on one 60A circuit. They are set to charge at 24A each, but I can bump it up in the app if I need to (almost never happens). If you charge both vehicles simultaneously every day, this is probably not the best solution. For us, however, it works beautifully.

Thanks! How are you running both off the same circuit? I don't see them mention daisy chaining like with the Tesla combo EVSE or anything like that.

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[RickLightning]

Thanks! How are you running both off the same circuit? I don't see them mention daisy chaining like with the Tesla combo EVSE or anything like that.

I have the two JuiceBoxes running off one 60amp circuit. With no load balancing, I set them to 48amp total. Wire from panel goes into small function box, 2 pigtails come out of it. Some EVSEs don't have pigtails so wire and conduit are needed.

 

[Ragman]

We use the Grizz-e Duos’s - one truck plugged gets 9 kw, two charging same time 4.5KW, two plugged one charging gets 7kw.

Very long cords which might let you reach one in driveway.

Plugs into a 14-50 which I prefer to hardwire - can take it with you, upgrade, use plug for camper, etc as needed.

 

[Monkey]

We use the Grizz-e Duos’s - one truck plugged gets 9 kw, two charging same time 4.5KW, two plugged one charging gets 7kw.

I'm having a Grizzl-e Duo being delivered today!

We have been sharing a Tesla charger (on 50A circuit) between the Lightning and Model Y. Sold the Y a few weeks back and have a Mach-E coming soon. I wanted to upgrade the circuit to 60A or better and do two load-balanced chargers but our panel is maxed out. We're technically overloaded, but nothing trips. I have two different electricians that do a lot of work for me (one already having wired my house) and both have looked and given me the same opinion -- I need to upgrade my service or add a separate service for my garage if I want to have more charging. The separate service for the garage makes sense and I'd do it but we're only planning to keep this place another year or two... I figure with the Grizzl-e Duo charger, we can plug in both vehicles every night and it will top them off just fine most days. If one needs a bit more, we can still get the same 40A charge rate we've been fine with if it's the only one plugged in.

 

[silverlightning]

Im also curious about this, but I currently have a single 100 amp circuit for the lightning with CSP. If/when we get a second EV, it seems like it may be more cost effective to share this circuit than run a new one, although it isn’t far. I don’t really need the full 80amps either for the Lightning.

Two tesla wall connectors make sense with this setup too? Looks like you could set up each to charge at 48 amps? Or is the 100 amp circuit a problem?

I think you could charge both at same time at 40 amps due to 80% rule or one at 80 amps . I have a lightning and Tesla with 60 amp circuit and they power share and it works great for me

 

[Lightning Rod]

I have a Ford Charge Station Pro in my detached garage that I've used to charge the Lightning for the last 3 years without any issues. We bought a Toyota EV last month and I've been charging the Toyota with the FCSP using an extension cord, also without issue.

I want to add a 2nd EVSE so that in the winter time, they both can be plugged in at night to keep the batteries warm when the temperature gets below freezing (which is very often here in Northeast Ohio).

The FCSP is wired from a 100A dedicated breaker in my basement, underground, to my garage. I'm hoping that I can have a 2nd EVSE installed and just use the existing circuit going to the FCSP, and just derate the FCSP to 40 amps. We only put maybe 30 miles or so on the Toyota per week so it would only get charged a couple times a week.

Is this possible and still be up to code?

Thanks.

 

[flyct]

I have a Ford Charge Station Pro in my detached garage that I've used to charge the Lightning for the last 3 years without any issues. We bought a Toyota EV last month and I've been charging the Toyota with the FCSP using an extension cord, also without issue.

I want to add a 2nd EVSE so that in the winter time, they both can be plugged in at night to keep the batteries warm when the temperature gets below freezing (which is very often here in Northeast Ohio).

The FCSP is wired from a 100A dedicated breaker in my basement, underground, to my garage. I'm hoping that I can have a 2nd EVSE installed and just use the existing circuit going to the FCSP, and just derate the FCSP to 40 amps. We only put maybe 30 miles or so on the Toyota per week so it would only get charged a couple times a week.

Is this possible and still be up to code?

Thanks.

Talk to your electrician. It may be feasible and code compliant to terminate the 100 amp line to a sub panel and feed 2 chargers on 50 amp circuits each and set them up as 50 amp circuits outputting 40 amps each.

You would loose the ability to charge your Lightning at full 80 amps.

 

[Joe Dablock]

That is exactly my situation. I brought 100 amp service to my garage with a 100 amp sub panel in my garage. I originally had a FCSP and a standard Ford wall charger, but with the FCSP throttled back to 50 amps. The FCSP has since died and I replaced it with a second Ford wall charger. It all works fine. It seems that when I had the FCSP, it rarely tripped the sub panel breaker when both cars were plugged in so I dialed the FCSP back. I also had a 220v plug installed at the panel so the portable car charge was also an option.

 

[hturnerfamily]

Here's my almost 120,000 miles conservative, and realistic, view of at-home charging over the last two years, with TWO full EV vehicles, and with only a SINGLE 30amp EVSE... easy.

Our '22 LIGHTNING PRO SR has over 68,000 miles
Our '24 KIA EV9 SR has over 50,000 miles

and yes, many of us have the conundrum of 'garage size' for these large trucks... but...

most all EVSE units come with a 25'-35' cable, and generally can reach most areas of any garage, if you want it to... yes, you might need to position the truck outside, but pulling up to the garage door, and slightly inside, generally puts your truck close enough... depending on where your EVSE resides: a sidewall might be best, although many are, unfortunately, at the front wall, farthest from the garage door... and, even then, some of us don't like our door opening potentially 'knocking' our other vehicle, when they have to park so close together... I get it.

Our solution: use an extension cable. Easy. Whether it's simply 5' more, or 25' more... whatever works.
For others, the solution might be to mount the EVSE on a wall or area closer to the garage door, if not making use of an extension. Even if you wish to close the garage door when your truck has to park and charge outside, the garage door coming down onto the cable is generally not an issue.

in all these miles, we've never run into any problem having power to both vehicles, when needed. Yes, sometimes you may charge one vehicle overnight, then the other the next night, but, generally, even with these miles, neither is needing a "full charge" EVERY night, or day...matter of fact, MANY nights NEITHER vehicle is charging.

 

[Vulnox]

I started this thread so should give an update. I haven't done a second EVSE yet, and to hturnerfamily's point, it's because it hasn't been needed. Even though my wife and I are back in the office at least four days a week, both vehicles are usually good for a week without a charge, and adding to that I have been able to charge them at work. I just take my wife's MME in on Thursday when she usually works at home and charge the truck as needed other days.

Especially during these very high gas prices times, it's extra satisfying to not even be paying to charge. But obviously not everyone has that benefit.

Even before I started doing that, I would just park the truck outside the garage then run the cable out. I sometimes used a J1772 extension I bought, but for the most part it reaches fine as long as I park closer to the garage door.

Much like the lessons learned around the guess-o-meter and range anxiety and all that, once you actually live with it for a while you realize it wasn't worth worrying about.

All that said, I am still tempted to see about getting an L2 run for the truck mainly for the winter. With the truck parked outside and the many below freezing (and for a while below 0) days we had this past winter, having the truck plugged in for conditioning of the battery would have been nice. I can't imagine it's good for the long term battery health for it to be run as cold as I had to run it some days.

 

[K6CCC]

All that said, I am still tempted to see about getting an L2 run for the truck mainly for the winter. With the truck parked outside and the many below freezing (and for a while below 0) days we had this past winter, having the truck plugged in for conditioning of the battery would have been nice.

With your location in MI, being able to keep the battery warm overnight and warming both the battery and cabin on shore power would be very nice and might well justify having a EVSE for the truck.

 

[flyct]

With your location in MI, being able to keep the battery warm overnight and warming both the battery and cabin on shore power would be very nice and might well justify having a EVSE for the truck.

^^^ This Agreed,

I had 2 wall connectors daisy chained and power shared in my garage. It worked great since there was no musical chairs plugging and unplugging 2 vehicles. I always left 2 EVs plugging in all the time. We had 2 Tesla's and a Lightning. I sold one of the Tesla's last week and we "only" have 1 Tesla and 1 Lightning now.

Two months ago we bought another house but we are still living at the original house until the renovation is complete on the newly purchased house.

At the beginning of the renovation of the new house I had a 125 amp sub panel installed in the garage to accommodate more circuits. I removed one Wall Connector from the existing house and installed it at the new house along with another Universal Wall Connector so I have 2 separate 60 amp Connectors on separate circuits, each set up to output 48 amps. Even though they are on separate 60 amp circuits I'm seriously considering power sharing them since the load calculation is high with the 5 ton AC, Electric Water Heater, Electric stove, 2 well pumps, 70 amp sub panel in the barn, 2-30a/120 RV outlets and everything else on a 200 amp service.

In the existing house where we are still staying, I now only have 1 Wall Connector. I can't believe how having only one EVSE is a pain to charge 2 EV's. First world problem.

House with daisy chained EVSE before removing one.

New 125 amp Sub Panel in new to me house.

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