I would agree loose or not retightened connection. We use ferrels and Cobra X Flex # 6 awg wire, great to work with and those fine strands within the ferrels compress much better then Cu. > On Jan 31, 2022, at 9:00 PM, Maverick Brown <[email protected] > <mailto:[email protected]>> wrote: > > Looks like the wire was not completely seated in the back of the terminal > before the set screw was tightened, the set screw grabbed a strand or two and > felt as though it was tight, etc. or the screw wasn’t tightened enough. The > resistive connection led to a lot of heat causing the insulation to burn. I > prefer using ferrules on those big terminals when using smaller than maximum > size wire. > > Maverick Brown > Off-Grid Solar Commander since 2006 > Maverick Solar Enterprises, Inc. > • Solar Commander Remote Power > • SunFlow Systems Cathodic Protection > [email protected] <mailto:[email protected]> > 512-460-9825 > > >> On Jan 31, 2022, at 7:51 PM, Dave Tedeyan <[email protected] >> <mailto:[email protected]>> wrote: >> >> >> Hi All, >> >> I was troubleshooting a Schneider system today (not my install, so I don't >> know the history) and came across a wire where the insulation actually burnt >> off. See the attached photo. I have never seen anything like it. Does anyone >> know how this could happen? It was a Conext MPPT 80 600 charge controller >> going to a 100A breaker, with what appears to be #2 CU wire. This is in a >> heated shed, and there is no evidence of water leakage. The charge >> controller was still working just fine. And it was only that last 6" or so >> of the wire, the rest of it appeared to be fine. >> >> Cheers, >> Dave >> >> -- >> <https://www.sungineersolar.com/> >> Dave Tedeyan, P.E. >> Owner | Sungineer Solar >> p: he | him | his >> a: 1653 Slaterville Rd. | Ithaca, NY 14850 >> w: www.sungineersolar.com <http://www.sungineersolar.com/> >> c: (607) 288-2898 >> <PXL_20220131_161735713.jpg>_______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> <http://re-wrenches.org/> >> >> List Address: [email protected] >> <mailto:[email protected]> >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> <https://www.mail-archive.com/[email protected]/> >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> <http://www.re-wrenches.org/etiquette.htm> >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org <http://www.members.re-wrenches.org/> >> > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > <http://re-wrenches.org/> > > List Address: [email protected] > <mailto:[email protected]> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org> > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
"We must all learn to live together as brothers, or we all will perish as fools." MLK > Tump > <blocked::mailto:[email protected]%22%20%5Co%20%22blocked::mailto:[email protected]>[email protected] > www.SWNL.net > <blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/> > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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