Hi all, first time poster here.
I recently had Tesla install 11.4kw solar and 3 powerwalls and have some questions about how they configured my panels. I'm looking to add AC to my home and Tesla is already asking me to upgrade my service and I'm not sure if they made a mistake on the install. Here's the situation
Prior to Tesla my home had a 200 amp service panel with two 30A breakers running two electric ovens and 125A breaker leading to a sub panel that ran all the rest of the loads in my house.
When Tesla installed my solar and powerwalls they connected a 125amp breaker between my service panel and the gateway. They then installed a 200amp distribution panel with the following breakers
60amp - solar
30 amp PW 1
30 amp PW 2
30 amp PW 2
125 amp Gateway
They then installed a 125amp load panel
they relocated my two 30amp oven breakers to that panel
moved my 125amp subpanel to that panel with a 100amp breaker
added a 125amp breaker to the gateway
I now want to add 40amps to my load panel for an air conditioner which I mentioned to Tesla I planned to do at the time I purchased everything
Tesla is telling me my 125amp load panel needs to be upgraded to a 200amp and that would require my service to be upgraded to 400 amps.
Tesla did a load calculation which came to 131amps, (they oversized the AC needs but undersized the SPA so I do think the calculation is about right)
My question is why would I need to upgrade my service to 400amps to have a 200amp load panel. I've been reading about the 120 rule but it seems that would apply only to the panel that the solar is tied to.
Thanks for any advice. I'm having a hard time getting a straight answer from Tesla, I keep going back and forth with customer service who takes a week to get an answer from their engineering team and we're going in circles.
I recently had Tesla install 11.4kw solar and 3 powerwalls and have some questions about how they configured my panels. I'm looking to add AC to my home and Tesla is already asking me to upgrade my service and I'm not sure if they made a mistake on the install. Here's the situation
Prior to Tesla my home had a 200 amp service panel with two 30A breakers running two electric ovens and 125A breaker leading to a sub panel that ran all the rest of the loads in my house.
When Tesla installed my solar and powerwalls they connected a 125amp breaker between my service panel and the gateway. They then installed a 200amp distribution panel with the following breakers
60amp - solar
30 amp PW 1
30 amp PW 2
30 amp PW 2
125 amp Gateway
They then installed a 125amp load panel
they relocated my two 30amp oven breakers to that panel
moved my 125amp subpanel to that panel with a 100amp breaker
added a 125amp breaker to the gateway
I now want to add 40amps to my load panel for an air conditioner which I mentioned to Tesla I planned to do at the time I purchased everything
Tesla is telling me my 125amp load panel needs to be upgraded to a 200amp and that would require my service to be upgraded to 400 amps.
Tesla did a load calculation which came to 131amps, (they oversized the AC needs but undersized the SPA so I do think the calculation is about right)
My question is why would I need to upgrade my service to 400amps to have a 200amp load panel. I've been reading about the 120 rule but it seems that would apply only to the panel that the solar is tied to.
Thanks for any advice. I'm having a hard time getting a straight answer from Tesla, I keep going back and forth with customer service who takes a week to get an answer from their engineering team and we're going in circles.