Hi mike, question. Are you saying the corrosion has been the source of the failures? Is this wire connection or actually inside the micro?
Jay Peltz power > On Sep 13, 2016, at 6:44 PM, Mike Nelson <mdelectricso...@gmail.com> wrote: > > I've had so many Enphase failures it's kind of ridiculous. We install most of > our systems near the ocean so corrosion has played a big factor. The newer > micro inverters are holding a much better, 215 and 250's. I have learned over > the years that SMA makes the best product, and I mostly stick with them. > Sometimes micro inverters are requested or really fit the installation > particulars, so I still use them occasionally. I haven't yet tried solar edge. > > Michael D Nelson > MD Electric & Solar, Inc. > 707-684-0064 mobile > 707-884-1862 office > www.mdelectricsolar.com > Sent from my iPhone > >> On Sep 13, 2016, at 6:23 PM, Rebecca Lundberg <rebecca.lundb...@gmail.com> >> wrote: >> >> Esteemed wrenches, >> >> I'm hoping the experience of this list can help give us a broader >> perspective on the current market performance and as a secondary concern, >> tech support (or lack thereof), from solar micro-inverter manufacturers. >> >> Are others having much trouble with micro-inverters? We have had repeated >> issues with several different brands on our systems in Minnesota: >> - 8 Enphase systems with mostly M210 and M215, have had to repeatedly go >> back to sites to replace units. The new replacement ones seem to be lasting >> better (we sure hope they will). Enphase is harder to contact in recent >> years, but we're happy they at least provide a predictable stipend. Are you >> also having to replace a lot of this brand of product? Are the newer models >> holding up better? >> >> - We gave a new inverter busbar design concept a try (tenKsolar) and though >> the micro-inverters were supposed to take turns and be 'redundant,' the ones >> with APS micro-inverters needed 100% replacement and the ones with Lead >> Solar micro-inverters have a problem where if one of them fails it appears >> to send a signal to all the rest so the entire busbar stops working -- in >> action it's far from redundant. When we purchased the tenKsolar Rais >> Inverter Bus (RIB) the spec sheet didn't tell us what brand of >> micro-inverter they would use as the OEM so we couldn't research the >> viability of the product or company or warranty stipend (or lack there-of) >> of the micro-inverter OEM. We assumed it was a tenKsolar product and they >> would provide warranty replacements, service, and tech support, but our >> experience has been far from that. When something goes wrong tenK says 'it's >> not our product that's failing' because they don't actually manufacture the >> micro-inverter (it's an OEM), the micro-inverter company says 'it's not our >> product' because tenKsolar has it wired and used in a very unique manner >> specific to the tenKsolar product, so both manufacturers are backing away >> from any responsibility. A 25-year warranty on the inverter busbar is a >> great concept but if/when something goes wrong there is no support and no >> apparent warranty at all except maybe they will send us a new component that >> needs several hours of work to re-install, so either the installer does the >> warranty work for free or the customer has a very unexpected expense to get >> their system back up and running a year or two after it was installed; we >> think both scenarios are unacceptable (from our installer perspective :-), >> do any of you have experiences you can share here? >> >> I'm wondering if the climate in MN makes us an anomaly. Based on these >> micro-inverter experiences we feel like the Rapid Shutdown rule has forced >> us to use dc optimizers on residential applications whether we want to or >> not -- is that pretty much what all of you are doing too? >> >> Rebecca Lundberg >> _______________________________________________ >> 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 >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> > _______________________________________________ > 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 > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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