We have found it so much simpler to not have to deal with 400a rated equipment, and to just to a supply side connection. We have used taps such as the ILSCO PBTD series, inside a typical plastic junction box that comes between the 200A meter and any service disconnect. It is also not much more expensive to make sure all panels and main breakers are rated at 22kair. If the inverters are nearby, you could just install a 200A main breaker panel for the solar combiner, and the main breaker in there counts as the service disconnect, so no additional 200A fused disconnect is needed.
Apologies if something in 2017 code makes this all not possible, as we are still on 2014 in NY. See 705.12(D)(2)(c) Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Honoree On Wed, Oct 23, 2019 at 12:11 PM Jeff Clearwater < je...@villagepowerdesign.com> wrote: > Hey Jay, > > Yes so you were on to it - but with the addition of having that downstream > of a separate 200 AMP meter box and 200 A Main that works :) Otherwise > PG&E would call it a 400 Amp service which for commercial accounts means > having to have CTs for the metering. > > Thanks!, > > Jeff > > Jay wrote on 10/17/19 3:38 PM: > > What about installing a 200 amp breaker in the 400 amp buss box? > > We talk a lot about doing it for smaller boxes, is there a reason it won’t > work here? > > Jay > Peltz power > > On Oct 17, 2019, at 1:30 PM, Glenn Burt <glenn.b...@glbcc.com> > <glenn.b...@glbcc.com> wrote: > > > > Hi Jeff, > > > > Seems to me if allowed in your jurisdiction, you might be best served by > installing a new 200A fused service disconnect ahead of the existing main > service panel. Or even a 400A one to allow for additional work inside > (CT’s), then perform a supply side connection in it. Some manufacturers of > switchgear have an option for lugs that accept multiple conductors, so no > piercing of conductors needs to happen. > > > > Good luck, > > Glenn > > > > *From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> > <re-wrenches-boun...@lists.re-wrenches.org> *On Behalf Of *Jeff Clearwater > *Sent:* Thursday, October 17, 2019 3:20 PM > *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org> > <re-wrenches@lists.re-wrenches.org> > *Subject:* [RE-wrenches] SolarReady Service Panel vs adding Supply Side > connection? > > > > 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 > > > > > > > > -- > ~~~~~~~~~~~ > > Jeff Clearwater > Village Power Design > linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/> > www.villagepowerdesign.com > cell - 413-559-9763 > ~~~~~~~~~~~~~~~~~~~~~~~ > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out or update participant bios:www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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