Tech support said if it’s landed in conjunction with the Load Out ground it causes an ‘echo’ on the grounds. Can result in erroneous Arc fault or other error codes. I think if using a separate wire trough, that trough needs to be physically far from the inverter and close to an electrode.
On Sun, Apr 6, 2025 at 8:09 AM Jason Szumlanski < [email protected]> wrote: > That's a good point. I didn't install this system, but I know for certain > the PV EGC is not landed in either of the dual Sol-Ark inverters. It must > be landed on a grounding terminal in a wiring trough or load center. I'll > have to track that down. I'm not sure how the GE system is installed, > either. > > > Jason Szumlanski > Principal Solar Designer | Florida Solar Design Group > NABCEP Certified Solar Professional (PVIP) > Florida State Certified Solar Contractor CVC56956 > Florida Certified Electrical Contractor EC13013208 > > > On Sun, Apr 6, 2025 at 11:03 AM david quattro <[email protected]> > wrote: > >> Hi Jason, >> SolArk tech support has told us to land the PV equipment ground >> directly to an electrode. ie do not land the PV ground in the inverter’s >> built in ground-bar. This detail wasn’t in their manuals years ago. I hope >> this is helpful 🤙🏼 >> David >> >> >> >> On Sun, Apr 6, 2025 at 7:19 AM Jason Szumlanski via RE-wrenches < >> [email protected]> wrote: >> >>> If anyone is using this tester to do insulation resistance testing, I >>> would appreciate any pointers you have. >>> >>> I have used it successfully to test home run DC strings from >>> rooftop junction boxes to inverters to check for nicks in wires and hard >>> faults to ground or short circuits. However, I am currently facing a >>> Sol-Ark 15K with three strings of PV that all seem to cause an intermittent >>> DC insulation fault (F24). I have isolated each string by disconnecting the >>> other strings at the rooftop junction box. With only one string connected >>> to the inverter, regardless of which string it is, I will eventually get >>> the F24 error. >>> >>> Since I have ruled out the home run wiring, It appears the issue must be >>> within the array somewhere. I would like to use the ET600 to help track it >>> down, but I am reading conflicting information on how to properly undertake >>> the test on each string. I know that I can disconnect the conductors >>> between each PV string and the junction box and test each jumper wire >>> individually while disconnected. But what about the PV module leads >>> within the string of connected modules? I'm suspecting a pinched PV module >>> lead somewhere, but I don't know where to start looking. >>> >>> Jason Szumlanski >>> Florida Solar Design Group >>> >>> >>> >>> >>> >>> _______________________________________________ >>> 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
