<p>Not sure what specific design type of CB this is. You guys/gals do know that most CB's are designed to Failsafe. They will trip before the rating if there is anything internal that has been damaged or changed. Designed in for protection.</p>
<p>It is extremely rare that a CB from a quality manufacturer will not trip. It could happen but I have not seen one.</p>
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<pre> </pre>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p>On Sat, 8 May 2021 19:32:31 -0400, Dave Tedeyan <dave@sungineersolar.com> wrote:</p>
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<div dir="auto">Kirk,
<div dir="auto">Could there be a loose wire connection to the breaker? That could cause it to heat up an trip sooner than it otherwise would.</div>
<div dir="auto">Cheers,</div>
<div dir="auto">Dave</div>
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<div class="gmail_attr" dir="ltr">On Sat, May 8, 2021, 2:13 PM Kirk Herander, VSE <kirkh@vermont.solar> wrote:</div>
<blockquote class="gmail_quote" style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">
<div id="m_-7795269527322252813__MailbirdStyleContent" style="font-size: 12pt; font-family: Arial; color: #000000; text-align: left;" dir="ltr">I have a system where the SE10000 inverter fried internally. The 60A AC output breaker tripped several times, as a result of the homeowner resetting over and over until he called me.
<div>I replaced the inverter under warranty and all is fine, except on sunny days the breaker will trip at about 40A, close to the max output of the inverter. Reset it outside of peak inverter output and its good. I assume the breaker has weakened from stress of some sort, so I replaced it and time will tell.</div>
<div>Anyone ever seen a breaker have it's trip point reduced like this?<br />
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<p class="MsoNormal" style="font-family: Arial; font-size: 16px; margin: 0in 0in 0.0001pt;"><span style="font-size: 10pt;"><a name="m_-7795269527322252813__MailAutoSig"></a><strong>Kirk Herander / </strong><strong><a style="color: blue;" title="Send an email to kirkh@vermont.solar" href="mailto:kirkh@vermont.solar">kirkh@vermont.solar</a></strong><span style="text-decoration: underline;"></span><span style="text-decoration: underline;"></span></span></p>
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