[RE-wrenches] SolarReady Service Panel vs adding Supply Side connection?

Jeff Clearwater jeffc at villagepowerdesign.com
Thu Oct 17 15:19:38 EDT 2019


Esteemed Wrenches,

I am in need of changing out an existing 200 Amp service entrance in 
order to accommodate a bus capable of handling a a 200 Amp Solar 
backfeed (41 KW system) .

PG&E is upgrading the transformer to handle the backfeed but when I 
proposed a Siemens SolarReady 400 Amp service entrance they couldn't 
approve it cause since the building is a shop - they classify it as 
commercial and require a panel that can handle CTs when there is a 400 
Amp service involved.

Anyone else faced with this have solutions?  What is the cheapest 
equipment I can provide to satisfy all requirements?

We don't need to upgrade the existing 200 amp service entrance equipment 
for load purposes - only to meet the bus requirements of backfeed.

Would it be cheaper and easier to use the existing (or new) 200 Amp 
residential panel - not call it a 400 Amp upgrade but simply add a 200 
Amp Supply Side Connection?  Suggested equipment to do that in the most 
economical manner?

Any help well appreciated!

Jeff








-- 
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Jeff Clearwater
Village Power Design
linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/>
www.villagepowerdesign.com <http://www.villagepowerdesign.com>
cell - 413-559-9763
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