I have a metered main service panel with no main breaker (125A bus), a 7.6kw inverter is hooked up to the system as a Supply side connection with a 60A breaker.
All the slots are taken in the MSP : A 90A breaker that feeds a subpanel and a 60A breaker to the inverter. The 120% rule doesn't apply because there is no main breaker.
I'm converting my gas water heater to electric, and it is pushing the 90A limit at the subpanel. I don't want to upgrade the MSP because it takes power shut off request with the utility company and stucco work, so I want to install a new subpanel for the new water heater and future EV charger.
Questions:
1. What is the max size breaker I can use for the new subpanel?
2. The PV inverter will need to hook up at the new subpanel, because the MSP is out of room. Is that ok?
3. Should the subpanel have a main breaker? If so, what size?
All the slots are taken in the MSP : A 90A breaker that feeds a subpanel and a 60A breaker to the inverter. The 120% rule doesn't apply because there is no main breaker.
I'm converting my gas water heater to electric, and it is pushing the 90A limit at the subpanel. I don't want to upgrade the MSP because it takes power shut off request with the utility company and stucco work, so I want to install a new subpanel for the new water heater and future EV charger.
Questions:
1. What is the max size breaker I can use for the new subpanel?
2. The PV inverter will need to hook up at the new subpanel, because the MSP is out of room. Is that ok?
3. Should the subpanel have a main breaker? If so, what size?