Designer101
Senior Member
- Location
- California
- Occupation
- Solar and ESS Designer
I am designing a System 17 KW with micro inverters IQ 7 PLUS, BACK FEED IS 7O A, the main service panel is 200/200 Pedestal type. The main service panel has 100A Breaker feeding sub ( this sub panel is rated 150A with main disconnect 150A) and the lugs are fed by another 125A MLO sub panel ( which has under 100A Loads) plus one 20A DPB and one 15A SPB. (Total breaker plus feed load=100+100+15+20=235< 200*1.2<=240)
Now my question is Can i derate the 150A Sub Panel breaker to 100A, SO THAT ACCORDING TO 120 PERCENT RULE (1.2*150-100=80A backfeed).is still valid.
but the main service panel is still 200/200 and has only 40A Backfeed. is it code complaint per NEC.
second questions if the above logic is untrue can I do GMA ( generation meter adapter ) provided by POCO ( southern california edison) for pedestal panel which is outside the mobile home. ( most of the GMA ARE DONE ONLY FOR BOTTOM FED TYPE AND MAIN METER COMBO ONLY )
3rd question can we do 400A upgrade with 200/200 split bus bar for pedestal panel. THIS SOLUTION IS MY Last choice if allowed.
i will really appreciate the answers. thank you
Now my question is Can i derate the 150A Sub Panel breaker to 100A, SO THAT ACCORDING TO 120 PERCENT RULE (1.2*150-100=80A backfeed).is still valid.
but the main service panel is still 200/200 and has only 40A Backfeed. is it code complaint per NEC.
second questions if the above logic is untrue can I do GMA ( generation meter adapter ) provided by POCO ( southern california edison) for pedestal panel which is outside the mobile home. ( most of the GMA ARE DONE ONLY FOR BOTTOM FED TYPE AND MAIN METER COMBO ONLY )
3rd question can we do 400A upgrade with 200/200 split bus bar for pedestal panel. THIS SOLUTION IS MY Last choice if allowed.
i will really appreciate the answers. thank you