Hi Ron I would check via clamp on meter to see if/which string of modules has current on it.
Jay > On Jul 10, 2022, at 3:10 PM, Ron Young via RE-wrenches > <re-wrenches@lists.re-wrenches.org> wrote: > > I have a customer that has self installed an array on a metal roof using APS > Rapid shutdown devices. The roof rack is standard rails and L-feet. It is a > high voltage system that will be connected to a Sol-Ark but it has yet to be > connected, just MC cables from each set of 8 panels (3 altogether) run back > to the location where the Sol-Ark will be installed. He raised a concern > about what he described as leakage of current to the metal roof: > > "I did experience noticeable “leakage” of current to our roof prior to > installation of the ground cable...Working around the metal roof one could > definitely feel the tingle of the current, and it persisted until I had the > ground cable connected.” > > My only guess is that possibly the APS devices are leaking at connection > point but not sure how to check or he had an unprotected end of the MC cable > touching the roof but that wouldn’t leak with the APS shutoff installed as it > would need a signal from the transmitter that is not yet installed in the > Sol-Ark. The panels are LG375’s. > > Ron > earthRight Solar - Solareagle.com > _______________________________________________ > 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
