<div dir="ltr"><div>It could be that the breakers are tripping due to the cloud-edge effect. This happens when you have a sunny day with a few puffy clouds <span class="ng" style="border-style:none;background:none">drifting</span> by. As the clouds start to shade the array, there is a focusing effect around the cloud that will increase the sunlight on the array. If the breakers are close to the max output of the array, then they can trip during these sunny/cloudy days. Increasing the breakers to the next size up, if the wiring will handle it, will fix the problem. I have seen this in a few installations. Changing the breakers from 10 amps to 15 amps fixed the problem.<br></div><div><br></div><div>David</div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Apr 30, 2026 at 9:31 PM All Solar via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">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="auto">Wrenches,<br><div dir="auto">I've got a c client with an Outback PV combiner with DIN mount CBs. He's let me know a few times that 9 of 10 , or at least 50%</div><div dir="auto">of the breakers are tripping for no apparent reason. He resets, and all is fine for a few months. </div><div dir="auto"><br></div><div dir="auto">I suspect something is wrong with the array vs. the breakers needing replaced.<br><br></div><div dir="auto">What should I be looking for and checking? </div><div dir="auto"><br>The client has made sure the breaker screws are tight. </div><div dir="auto"><ul><li>Off grid</li><li>Pole mounted array</li><li>Solarex 110 w Modules</li></ul></div><div dir="auto"><br><br></div><div dir="auto"><br></div><div dir="auto">Regards,</div><div dir="auto"><br>Jeremy Rodriguez</div><div dir="auto">All Solar </div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div></div>
_______________________________________________<br>
List sponsored by Redwood Alliance<br>
<br>
Pay optional member dues here: <a href="http://re-wrenches.org" rel="noreferrer" target="_blank">http://re-wrenches.org</a><br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br>
<br>
There are two list archives for searching. When one doesn't work, try the other:<br>
<a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" rel="noreferrer" target="_blank">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br>
<a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer" target="_blank">http://www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noreferrer" target="_blank">http://www.members.re-wrenches.org</a><br>
<br>
</blockquote></div>