You can tighten up the graph to minutes, even seconds if you set it up to do so Jerry
On Mon, Jun 1, 2020, 10:01 AM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > 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. > > 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. > > > > > On Mon, Jun 1, 2020 at 12:48 PM Jerry Shafer <jerrysgarag...@gmail.com> > wrote: > >> Jason, Wrenches >> Can you install a data logger, say an eguage so you can see spikes or a >> frequency shift, surge, most anything. >> Install two non connected breakers to isolate the line, just for testing >> purposes and see if it's only one that pops. >> Jerry >> >> >> On Mon, Jun 1, 2020, 9:11 AM Jason Szumlanski < >> ja...@floridasolardesigngroup.com> wrote: >> >>> 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. >>> >>> 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. >>> >>> >>> >>> On Mon, Jun 1, 2020 at 11:00 AM jay <jay.pe...@gmail.com> wrote: >>> >>>> Hi Jason, >>>> >>>> My curiosity is about both breakers tripping. >>>> 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. >>>> >>>> And I would also ask if the breakers are actual CH or clones? >>>> >>>> jay >>>> >>>> peltz power >>>> >>>> On Jun 1, 2020, at 7:23 AM, Jason Szumlanski < >>>> ja...@floridasolardesigngroup.com> wrote: >>>> >>>> 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. >>>> >>>> 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. >>>> >>>> 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. >>>> >>>> Jason >>>> >>>> >>>> On Mon, May 25, 2020, 10:43 AM Jason Szumlanski < >>>> ja...@floridasolardesigngroup.com> wrote: >>>> >>>>> 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. >>>>> >>>>> 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. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> On Thu, May 21, 2020 at 11:15 AM <scot.a...@solarcentex.com> wrote: >>>>> >>>>>> 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’s >>>>>> associated breaker in the Enphase combiner. >>>>>> >>>>>> >>>>>> >>>>>> 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’ve add equally nice >>>>>> days >>>>>> since. >>>>>> >>>>>> >>>>>> >>>>>> 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… >>>>>> >>>>>> >>>>>> >>>>>> My story. >>>>>> >>>>>> >>>>>> >>>>>> Scot >>>>>> >>>>>> >>>>>> >>>>>> *From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> *On >>>>>> Behalf Of *Jason Szumlanski >>>>>> *Sent:* Thursday, May 21, 2020 8:57 AM >>>>>> *To:* RE-wrenches <re-wrenches@lists.re-wrenches.org> >>>>>> *Subject:* [RE-wrenches] Enphase intermittent breaker trippjng >>>>>> >>>>>> >>>>>> >>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> 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. >>>>>> >>>>>> >>>>>> >>>>>> Jason Szumlanski >>>>>> >>>>>> Florida Solar Design Group >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> List sponsored by Redwood Alliance >>>>>> >>>>>> List Address: RE-wrenches@lists.re-wrenches.org >>>>>> >>>>>> Change listserver email address & settings: >>>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>>> <https://mailtrack.io/trace/link/597d17191a5e04849606ae0978333668b3700063?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=7436ab18d052ff54> >>>>>> >>>>>> List-Archive: >>>>>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>>>>> <https://mailtrack.io/trace/link/be955f33c15547578a4fc2bb22bf238522aa477e?url=http%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2Fmaillist.html&userId=1613865&signature=9be69f034134d9b4> >>>>>> >>>>>> List rules & etiquette: >>>>>> 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