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

[William Miller]

Jeff:



Would a class 320, solar-ready, meter/main combo be approved for this
commercial application?  Here is a link
<https://www.downloads.siemens.com/download-center/download?BTLV_44465> to
a product we have used in residential applications.  It offers
through-the-jaws metering at 400 amps peak, 320 amps continuous.



William





Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985



*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *Jeff Clearwater
*Sent:* Wednesday, October 23, 2019 9:11 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] SolarReady Service Panel vs adding Supply Side
connection?



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.burt at glbcc.com>
<Glenn.burt at 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-bounces at lists.re-wrenches.org>
<re-wrenches-bounces at lists.re-wrenches.org> *On Behalf Of *Jeff Clearwater
*Sent:* Thursday, October 17, 2019 3:20 PM
*To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
<re-wrenches at 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
~~~~~~~~~~~~~~~~~~~~~~~

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