Hi Don, The Sunny Boy US models are able to be configured for positive ground. I have found some of them here before for replacements: https://you-love-solar.myshopify.com/search?type=product&q=love+solar
Looks like they even have an old Sunpower one on their front page. Cheers, Dave On Fri, Mar 19, 2021 at 11:41 AM <d...@energysolarnow.com> wrote: > We have several older-than-10-year installs with SunPower positively > grounded modules and inverters that have failed. The inverters were > branded by SunPower but made by various vendors like PVPowered and Xantrex > that aren't around any more. > We know if a negative grounded inverter is used with these SunPower > modules they gather some parasitic charge that inhibits normal current > flow. > I have a few used inverters with negative ground that look like they can > be modified to positive ground, with the risk there is some internal > software that cannot be adjusted. > It looks like a Fronius IG can be changed over with a software adjustment > that is actually in the manual. > What I'm wondering is whether a new ungrounded inverter can be used with > these SunPower modules and keep them operating normally. > Does anyone have some pertinent experience with this? > Thanks > Don Barch > > > _______________________________________________ > List sponsored by Redwood Alliance > > 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 > > -- *Dave Tedeyan, PE* [image: Sungineer Solar] 1653 Slaterville Road, Ithaca, NY 14850 Cell: 607-288-2898 www.sungineersolar.com
_______________________________________________ List sponsored by Redwood Alliance 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
