I seem to remember this was an issue a long time ago. The GTI was some sort of fix.
I’d install a manual transfer switch as I presume the inverter/solar is now battery backup? Or you could use a breaker box with an interlock kit. Good luck Jay > On Jan 10, 2026, at 2:13 PM, David Palumbo via RE-wrenches > <[email protected]> wrote: > > > Wrench, > > An off-grid installation of mine from many years ago has is now using grid > power instead of a generator. The utility is telling the homeowner that they > are going to disconnect him because his house is back feeding 1 amp into > their grid power. > > I've been retired for many years now and did not do any of the work to > connect the utility power to his Trace SW4024 inverter/charger. The utility > power became available when his son brought in utility power for his maple > sugaring operation in the neighborhood, and the father connected power to his > house to replace his fossil fueled generator for additional charging into his > battery bank. They do not have a grid interconnect sellback agreement with > the utility. > > I have no experience with this, but I'm assuming that the utility grid is > seeing power from its input connection to his Trace SW4024. Does that sound > right? If so, is there a simple solution to fix this problem while continuing > to use the grid power through his SW inverter? > > Thanks for any advice that may help. > > David Palumbo > Hyde Park, VT > > _______________________________________________ > 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 >
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