<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"></div><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">In this case, we would just do a feeder tap on the feeder that comes straight from the main breaker (not the feeder that comes from the feed-through lugs) and install a 200A circuit breaker on the load side of the PV interconnection.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">If your utility does not require a utility-accessible disconnect switch, you can just do the feeder tap in the subpanel that comes directly from the service disconnect and install a main breaker in the subpanel.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">See attached diagrams.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Square D makes a CSED that has two 200A disconnects PLUS a 200A bus with up to four 2-pole service disconnects (this bus is not a feed-through). However, those 2-pole disconnects can only be a maximum of 125A each. If you have a smaller system, these breaker positions work well in many circumstances, but the 120% rule or sum of breakers rule may come into play for the bus. Technically this is a bit of a gray area, because this bus is not protected at all by a primary supply OCPD, so it's not specifically addressed in the code. This really isn't a "load side" interconnection - your AHJ may consider each breaker position a line side interconnection (since each breaker is a service disconnect) and none of the load side provisions apply. Or they may say the intent of the code is to protect the bus and apply the load side requirements. You could presumably split your system into two systems and feed two 100A breakers on this bus and meet the rapid shutdown requirement, especially if there are no other loads on the bus (sum of the breakers rule).</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Jason Szumlanski</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Florida Solar Design Group</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><b><div style="text-align:center"><br></div></b></div></div></div></div></div></div></div></div><br></div><br><img width="0" height="0" class="mailtrack-img" alt="" style="display:flex" src="https://mailtrack.io/trace/mail/432d8757333337966deafc162b897783788e33e4.png?u=1613865"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 29, 2022 at 2:59 PM August Goers via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Jeff - <div><br></div><div>There is no particular supply side connection location on this panel - I think if you needed that it is best to go with the Siemens part that Vincent sent over.</div><div><br></div><div>However, you could use the sum of all breakers rule on the internal bus and install up to 200 A of solar breakers in the panel. Then, use the other 200 A main breaker to feed your loads. If your loads are larger than 200 A, I suppose this won't work.</div><div><br></div><div>August <br><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 29, 2022 at 11:43 AM Jeff Clearwater <<a href="mailto:jeffc@villagepowerdesign.com" target="_blank">jeffc@villagepowerdesign.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Thanks August yes but am I missing where you put the third tap for the PV backfeed? I need 2 x 200 amp mains plus a 200 amp pv backfees point and the meter needs to have test bypass links. <br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Mar 29, 2022, at 10:34 AM, August Goers <<a href="mailto:august@luminalt.com" target="_blank">august@luminalt.com</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="ltr">Hi Jeff -<div><br></div><div>There are several 400 A (or 320 A continuous) meter/mains on the market with 2 x 200 A breakers. In the Bay Area these are frequently referred to as "California 400" panels, even though they are installed with a self contained 320 A rated utility meter, rather than a 400 A CT-meter. They are great for systems with large energy storage, because one 200 A breaker can feed non-backup loads and the other 200 A breaker can feed backup loads and solar. Anyway, here's one such example:</div><div><br></div><div><a href="https://mailtrack.io/trace/link/3910960843ccf9824afeb60069479de60bb0ff88?url=https%3A%2F%2Fwww.milbankworks.com%2Fproducts%2Fcatalog%2FM400-UG-APS-LC&userId=1613865&signature=71a10799e664d2b5" target="_blank">https://www.milbankworks.com/products/catalog/M400-UG-APS-LC</a></div><div><br></div><div>Best,</div><div><br></div><div>August</div><div>Luminalt<br><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 29, 2022 at 10:15 AM Jeff Clearwater via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
Good Day Wrenches,<br>
<br>
Does anyone know of a 400 Amp Meter/Main that can accomplish the
following?<br>
<br>
1) Provide 2 x 200 Main Breakers for Loads<br>
2) Provide an easy supply side tap point for 160 Amps of Grid-tie Solar
(so basically a 200 Amp backfeed)<br>
<br>
I'm considering using an <span style="font-weight:bold"><a href="https://mailtrack.io/trace/link/f56d44501c53a22d6d09c73085462103942b7e81?url=https%3A%2F%2Fwww.rexelusa.com%2Fp%2F525405%2Featon-b-line%2F400a-4p-4-jaw-meter-socket%2F782051622102%2F324-n&userId=1613865&signature=adb5dc688c6b5bbd" target="_blank">Eaton
324 N</a></span> (Eaton B-Line 324 N 400A, 320 A cont. 4P, 4 Jaw,
Meter Socket W Link Bypass Facilities) but I'm not sure I can double lug
it and then also tap off of one of the 200 Amp lines with another tap
(using <a href="https://mailtrack.io/trace/link/94bf932828dc23659f7504cb03f4995654d0c503?url=https%3A%2F%2Fwww.ilsco.com%2FIlsco%2Fccrz__ProductDetails%3Fsku%3DIPC-250-4%252F0-ILSM-ILS%26cclcl%3Den_US&userId=1613865&signature=3d4ed17d7123dfa6" target="_blank">Ilsco
IPC-250-4/0</a> splice connectors).<br>
<br>
Thanks!<br>
<br>
Jeff<br>
<br>
<div><br>~~~~~~~~~~~<br>
<div>
<span>Jeff Clearwater<br>
</span><span><span><span><span><a href="https://mailtrack.io/trace/link/f037be22c035a02753aae8160864ea84b58cb872?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Fjeff-clearwater-0622a312%2F&userId=1613865&signature=1fa6e87c15858f46" target="_blank">linkedin</a></span></span></span></span><span><span><br></span></span></div></div></div></blockquote></div></div></blockquote></div></blockquote></div><br>
</blockquote></div>
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