Inspectors in my area require the conduit terminations be packed with duct seal for this reason to avoid condensation build up in j boxes.
Every intermittent insulation/isolation test failure I’ve ever meggered and resolved has been the result of moisture, either condensation or heavy rain permeating a termination enclosure, or a defective panel admitting moisture. *Kirk Herander / **[email protected] <[email protected]>* *Owner|Principal, VT Solar, LLC* *Celebrating our 34st Anniversary 1991-2025!!* dba Vermont Solar Engineering 802.559.1225 On Thu, May 8, 2025 at 3:57 PM david quattro via RE-wrenches < [email protected]> wrote: > Fronius install manual says the conduit entry ports need to be packed with > putty around the wires. They’re the only manufacturer I know of that > requires this. Water vapor roses into the circuit boards. I used to get > a couple different error codes until we packed the conduits. > Good luck, and let us know! > > > > On Thu, May 8, 2025 at 12:22 PM Dave Tedeyan via RE-wrenches < > [email protected]> wrote: > >> Hello, >> >> There is an installation that I am servicing with the Q.Peak G4 modules, >> where one cell has some visible damage. I am wondering whether this type >> damage can lead to a ground fault? The Fronius inverter on site is >> picking up an "Insulation Resist" error. I am wondering whether this could >> be the cause, or whether I should look elsewhere in the array. A photo is >> attached. Any thoughts would be appreciated. >> >> Thanks! >> Dave >> >> -- >> >> [image: Logo] <https://www.sungineersolar.com/> >> Dave Tedeyan, P.E. >> Owner | Sungineer Solar >> p: he | him | his >> a: 1653 Slaterville Rd. >> <https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g> >> >> <https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g>| >> Ithaca, >> NY 14850 >> <https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g> >> w: www.sungineersolar.com <http://www.sungineersolar.com/> >> c: >> <https://www.google.com/maps/search/1653+Slaterville+Rd.+%C2%A0+%7C%C2%A0Ithaca,+NY+14850?entry=gmail&source=g>(607) >> 270-0370 >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: [email protected] >> >> 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/[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 >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[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 > >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] 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/[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
