[RE-wrenches] Trace SW4024 feeding back to grid

[Jay]

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 <re-wrenches at lists.re-wrenches.org> 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: RE-wrenches at 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
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20260110/f812ebf5/attachment.htm>