225A Electrical service panel?

[Killlbox]

We have a 225A electrical service panel in the garage and I’m hearing that Tesla is requiring something with lower amperage than that to qualify for power share home backup. Is that true and if so, is there a workaround?

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[sharpgator]

I have 2 bids going at once. The first is the Tesla thing. Even though I have 225, it appears I will be approved. On the other hand I have my own electrician giving me a bid on a generator interlock. Other than the automation, I think both would function similarly

 

[araxara]

We have a 225A electrical service panel in the garage and I’m hearing that Tesla is requiring something with lower amperage than that to qualify for power share home backup. Is that true and if so, is there a workaround?

Tesla says in their email:

• Have a main electrical service panel rating less than 225A

Sounds like a strange requirement. You can tell them that yours is 224A. Or see if you can switch out your main circuit breaker to 200A.

 

[XCeilidhX]

That’s crazy!

We had to upgrade our panel to 400 amps to accommodate charging two electric cars and all the other stuff that our house needs.

That’s pretty crappy of them to penalize making a home MORE EV-ready. So glad i didn’t go with the FS $20k premium. It’s so much stuff I cannot use.

Sorry they are using that as a “gotcha” out so they don’t have to honor their commitment. That sucks. Dumb decision on their part. That will be shit PR.

Cheers

 

[mongo]

That’s crazy!

We had to upgrade our panel to 400 amps to accommodate charging two electric cars and all the other stuff that our house needs.

That’s pretty crappy of them to penalize making a home MORE EV-ready. So glad i didn’t go with the FS $20k premium. It’s so much stuff I cannot use.

Sorry they are using that as a “gotcha” out so they don’t have to honor their commitment. That sucks. Dumb decision on their part. That will be shit PR.

Cheers

The Gateway is only rated at 200A. Powerwalls also cannot be installed to feed a 400A panel.
However, many 400A (320 continuous) services use dual 200A main panels. Either of those can be backed up with Powershare with non-backedup loads on the other.
Or, a 200A subpanel might be able to be added from the 400A with backed up loads.

 

[cgladue]

That’s crazy!

We had to upgrade our panel to 400 amps to accommodate charging two electric cars and all the other stuff that our house needs.

That’s pretty crappy of them to penalize making a home MORE EV-ready. So glad i didn’t go with the FS $20k premium. It’s so much stuff I cannot use.

Sorry they are using that as a “gotcha” out so they don’t have to honor their commitment. That sucks. Dumb decision on their part. That will be shit PR.

Cheers

thats strange, i have a main panel and 2 100 Amp subpanels off it 2 central AC and a shitton of other things all on 200A service. you know you can use only 1 circuit to charge up to 4 cars right ? the wall connectors will load balance the available current between them.

 

[XCeilidhX]

We have a big house with two separate heat pump hvac systems, a hot tub with it’s own 50 amp service, and we made each EV charger wire run 100 amps. I have an early model S that can charge at 80 amps with the dual chargers and then each line can easily be split to up to 4 40 amp EV chargers for simultaneous use… why? We live in the mountains where forest fire escapes are the real deal. We have been evacuated 4 times in the last 8 years. We have to be able to add miles on all cars as fast as possible on short notice simultaneously as a safety thing. There’s more that eats up our power usage as well but we sometimes pull over 200 amps at any one time as a total load.

Cheers

 

[XCeilidhX]

The Gateway is only rated at 200A. Powerwalls also cannot be installed to feed a 400A panel.
However, many 400A (320 continuous) services use dual 200A main panels. Either of those can be backed up with Powershare with non-backedup loads on the other.
Or, a 200A subpanel might be able to be added from the 400A with backed up loads.

Seems like a case where Tesla should have over engineered the specs for wider applicability to me, but just MHO. My house does subdivide the main 400 amp panel into two 200 amp sub panels so perhaps that could be helpful. We’re selling soon though so that may be a project for the next homeowner or ours at our next place.

Cheers

 

[mongo]

Seems like a case where Tesla should have over engineered the specs for wider applicability to me, but just MHO. My house does subdivide the main 400 amp panel into two 200 amp sub panels so perhaps that could be helpful. We’re selling soon though so that may be a project for the next homeowner or ours at our next place.

Cheers

Yeah, full 400A switchgear is pricy and 400/320 meter bases usually have dual lugs so it's not that limiting. Especially when considering the capacity needed to actually power a full 400A service worth of loads. (Though a DC link between the Powerwalls would be nice for maximum kWh utilization).

 

[stubro]

The Gateway is only rated at 200A. Powerwalls also cannot be installed to feed a 400A panel.
However, many 400A (320 continuous) services use dual 200A main panels. Either of those can be backed up with Powershare with non-backedup loads on the other.
Or, a 200A subpanel might be able to be added from the 400A with backed up loads.

This was what I was hoping as well. I have 2 200s but most loads I need on one. I can have an electrician move the others.

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