Solar Noob
Member
- Location
- California
- Occupation
- Electrical Engineering (in training)
Hi everyone I have another dumb question about load calcs, this time if you have multiple sub panels.
When doing load calcs, are the subpanel loads supposed to be calculated separately or should the subpanel breakers in the MSP be rated at 125%?
The panel I am working with is a 200A buss rating, and there is a 100A sub panel breaker and a 60A subpanel, which has EV attached to it. I have pictures of the loads in all three panels, but I am not sure if I am complying with NEC 705.12 while attempting to do the load calculations from NEC 220.87. Do the subpanels need to be rated at 125% due to the 705.12 saying service panels can't go over that amount, simplifying the calculation part on my end, or do those loads need to be calculated separately? Any help on clearing this up is welcome.
When doing load calcs, are the subpanel loads supposed to be calculated separately or should the subpanel breakers in the MSP be rated at 125%?
The panel I am working with is a 200A buss rating, and there is a 100A sub panel breaker and a 60A subpanel, which has EV attached to it. I have pictures of the loads in all three panels, but I am not sure if I am complying with NEC 705.12 while attempting to do the load calculations from NEC 220.87. Do the subpanels need to be rated at 125% due to the 705.12 saying service panels can't go over that amount, simplifying the calculation part on my end, or do those loads need to be calculated separately? Any help on clearing this up is welcome.