<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">I didn't think an eGauge would provide that granular of detail if there is a very brief intermittent issue. If I'm wrong about that it might be worth a try. </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">What I really want to do is install a separate breaker in the main panel for the Envoy so it doesn't lose power when the IQ Combiner main breaker trips. I wonder if that would provide me any insight into what's happening immediately after the PV branch circuit and feeder circuit trip.</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"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 1, 2020 at 12:48 PM Jerry Shafer <<a href="mailto:jerrysgarage01@gmail.com">jerrysgarage01@gmail.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">Jason, Wrenches<div dir="auto">Can you install a data logger, say an eguage so you can see spikes or a frequency shift, surge, most anything.</div><div dir="auto">Install two non connected breakers to isolate the line, just for testing purposes and see if it's only one that pops.</div><div dir="auto">Jerry<br><div dir="auto"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 1, 2020, 9:11 AM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank">jason@floridasolardesigngroup.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="ltr"><div style="font-family:arial,helvetica,sans-serif"></div><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif">I considered that, but it's tripping at night, so it's not a power output issue. It does have #6 wire, so this could be done, but I don't think it's related. It's a genuine CH240 breaker. We even replaced it once before.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">At this point, I must have a fault or faults on the roof. Maybe a rodent chewed through some wires. I'm going to wait for another fault and then go pull the modules to check it out.</div><div style="font-family:arial,helvetica,sans-serif"><table border="0" cellpadding="0" cellspacing="0" style="font-family:"helvetica neue",helvetica,arial,sans-serif"></table></div><div><div dir="ltr"><div dir="ltr"><div><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></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 1, 2020 at 11:00 AM jay <<a href="mailto:jay.peltz@gmail.com" rel="noreferrer" target="_blank">jay.peltz@gmail.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>Hi Jason,<div><br></div><div>My curiosity is about both breakers tripping. </div><div>I would suggest using a larger output breaker, I believe its a 40, put in a 50 as a test. I would assume the wire size will still be protected by the 50. </div><div><br></div><div>And I would also ask if the breakers are actual CH or clones?</div><div><br></div><div>jay</div><div><br></div><div>peltz power<br><div><br><blockquote type="cite"><div>On Jun 1, 2020, at 7:23 AM, Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" rel="noreferrer" target="_blank">jason@floridasolardesigngroup.com</a>> wrote:</div><br><div><div dir="auto">Well, that didn't resolve it. The main breaker and a branch circuit breaker tripped again a few days ago. It was the same branch this time. <div dir="auto"><br></div><div dir="auto">As my next diagnostic step I swapped two circuits (on which breaker they are landed). If history is a guide, it will work for about two weeks and then trip again.</div><div dir="auto"><br></div><div dir="auto">I'm dumbfounded. I really don't want to have to tear this whole system apart. At this point, if I have to remove all the modules, I feel that I need to replace all of the trunk cable which is an expensive proposition. I really don't know what else to do at this point.</div><div dir="auto"><br></div><div dir="auto">Jason</div><div dir="auto"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, May 25, 2020, 10:43 AM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" rel="noreferrer" target="_blank">jason@floridasolardesigngroup.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="ltr"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif">I strongly suspect the CH240 combined breaker was compromised (we will see). Since it happened that two different strings tripped, I doubt I have two microinverters with internal faults. It has to be the combined breaker. I was just surprised that branch circuit breakers were tripping simultaneously with the combined output breaker.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">Of all the supply side connected systems I have installed, I have never seen a combined output fusible disconnect fuse blow, but I have seen many combined output breakers tripped. I was worried early on that I would be replacing fuses constantly, but that has not been an issue whatsoever.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif"><br></div><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><table border="0" cellpadding="0" cellspacing="0" style="font-family:"helvetica neue",helvetica,arial,sans-serif"><tbody><tr><td rowspan="2"><br></td><td rowspan="2"></td></tr></tbody></table><b><div style="text-align:center"><br></div></b></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 21, 2020 at 11:15 AM <<a href="mailto:scot.arey@solarcentex.com" rel="noreferrer noreferrer" target="_blank">scot.arey@solarcentex.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 lang="EN-US"><div><p class="MsoNormal">Actually, we had a IQ7 string loaded up to its max panel size and max string length and in the spring on cool, clear day, it tripped the string\u2019s associated breaker in the Enphase combiner.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">We reset but of course that breaker was impaired and it tripped again. We replaced and never had an issue going forward. We suspect the breaker was less than perfect from the start as we\u2019ve add equally nice days since.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">This almost reminds me of loading up Outback FM80. It says 4,000 watts but in reality, 3,600 is the max when amps spike. I will be extra careful going forward on IQ7 string length when going to the max published\u2026<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">My story.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Scot<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p class="MsoNormal"><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>> <b>On Behalf Of </b>Jason Szumlanski<br><b>Sent:</b> Thursday, May 21, 2020 8:57 AM<br><b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br><b>Subject:</b> [RE-wrenches] Enphase intermittent breaker trippjng<u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">I'm trying to resolve an intermittent frustrating problem with and Enphase IQ system. There are three AC Branch circuits of 9 microinverters each coming into an Enphase AC combiner. <u></u><u></u></p><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">What has been happening is one of the BR220 branch circuit breakers and the combine CH240 breaker in the main backfed load center have been tripping simultaneously. It has happened about four times in the last 6 months. It was always the same branch circuit breaker, so we kept investigating that string, checking the junction box, trunk cable, and cap, etc. Finally we swapped out the BR220 breaker. <u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Fast forward 4 weeks, and we got another call. This time a different branch circuit breaker and the main breaker tripped simultaneously. We checked that branch circuit and could not find any fault. It seems unlikely that two branch circuit breakers would be faulty, so we have now switched out the CH240 main breaker in hopes that it is the culprit. <u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">I'm not totally confident in this resolution and I have my fingers crossed. If that doesn't work, does anyone have any suggestions on another diagnostic step? These intermittent problems are a major hassle. One thought I had was to switch to a supply side interconnection with a fusible disconnect. Maybe the intermittent fault would blow one of the two line fuses so at least I could narrow it down to which line the fault is on if there is in fact a fault.<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">I have experienced two other tripping breaker issues with Enphase systems in the past. Neither of them were systems I installed. One turned out to be branch circuits that were not properly paired up and landed on different breakers. Another time we had an inverter with an internal fault which eventually"blew up" with a loud popping noise and smoke billowing out of it. That happened after resetting a trip breaker multiple times. This case seems to be unrelated to those issues. I'm perplexed. <u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal">Jason Szumlanski<u></u><u></u></p></div><div><p class="MsoNormal">Florida Solar Design Group<u></u><u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div><div><p class="MsoNormal"><u></u> <u></u></p></div></div></div></div>_______________________________________________<br>
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