<div dir="auto">The breaker is in place to prevent back feeding in the event of a short between the breaker and the modules, look at the max fuse rating on the modules as a reference but don't exceed that value. Most are 20 amps now up from 15 some years back. Look at each breaker closely and check each breaker during the middle of the day and check for heat damage, also make sure they are DC rated, I have seen this even on large arrays and the combiner gets damaged as a result. <div dir="auto">Fun times<br><div dir="auto"><br></div></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, May 1, 2026, 3:05 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">These are not MN breakers. </div><div dir="auto">After seeing that the module max series fuse rating is 20A, which is a stocking item for us, along with the fact that it’s a 3 hr drive, I’ll likely just replace the breakers.</div><div dir="auto"> </div><div dir="auto">Thanks for the collaboration snd feedback!</div><div dir="auto"><br clear="all"><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">Jeremy Rodriguez <br>All Solar Inc. <br>Penrose CO<br>719-276-4954<br>Established 1998 </div></div></div><div><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 1, 2026 at 3:10 PM Ray Walters via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><u></u>
<div>
<p>I've also seen some Outback 15A breakers in combiner boxes just
trip when they shouldn't. Replaced with Midnite and quit having
problems. As others mentioned, going to larger breakers is
usually fine. I usually match the fuse rating for the module
itself. Many are 20A, which gets away from any edge of cloud
stuff too. </p>
<p>Ray Walters<br>
Remote Solar</p></div><div>
<div>On 5/1/2026 1:55 PM, David Coale via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite">
<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 style="border-style:none;background:0% 0% repeat">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">
<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" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">
<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>
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