I haven't seen many, but every one I've seen has been a melted MC4 connector.
Jason Szumlanski Florida Solar Design Group On Sat, Dec 18, 2021, 3:21 PM Jerry Shafer <jerrysgarag...@gmail.com> wrote: > Over the years every SMA arcfault has been real, l am also not saying > hazard, well, AC, welding, all creat Arc noise in the system and it can be > from a normal contactor arc. I have also seen AM arc faults caused by > defective or knock off MC connectors, in adequately stripped wires that > result in the screw down connection on the insulator causing arc in the > connector. > Jerry > NABCEP PV Inspestor > > On Sat, Dec 18, 2021, 6:07 AM Mac Lewis <maclew...@gmail.com> wrote: > >> Hi Wrenches, >> >> I have spent this last week clearing arc faults on SMA inverters. There >> never appears to be a true arc event, just the occasional event and then >> lockout. >> >> What is the best approach to fix these tripping inverter issues? Is >> there a way to decrease the sensitivity? Any procedures that are effective >> at keeping this from happening? All connections are good and tight and >> triple checked. Anyway to remotely clear these faults? >> >> Thanks >> >> -- >> >> >> >> Mac Lewis >> >> *"Yo solo sé que no sé nada." -Sócrates* >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> 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 >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> 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 >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > 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 > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > 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 > >
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