The Generac SMM can be set up to lock out any time the generator is running. Its a relatively easy device to install and should work fine.
On Thu, Jan 22, 2026 at 7:24 AM scot.arey--- via RE-wrenches < [email protected]> wrote: > Generac. > > I thought that load shed function was based on frequency downward > deviation caused by heavy loads so perhaps this might cut solar at the only > theoretically possible point where solar might be acceptable: high loads. > > I'm at the point thinking what I tell folks all the time: don't > interconnect solar downstream of the generator ATS. Sigh...was trying to > minimize costs to customer in this post-tax credit world but these pesky > generators. > > *Howard "Scot" Arey* > *Owner, Solar CenTex* > 254-300-1228 > > ------------------------------ > *From:* RE-wrenches <[email protected]> on behalf > of Mac Lewis via RE-wrenches <[email protected]> > *Sent:* Thursday, January 22, 2026 7:35 AM > *To:* [email protected] <[email protected]>; RE-wrenches < > [email protected]> > *Cc:* Mac Lewis <[email protected]> > *Subject:* Re: [RE-wrenches] Will IQ8 microinverters backfeed a generator > during grid interruptions > > Hello Scot, > > What type of generator? > > Generac has a load shed module that can shed a load remotely by "knowing" > when the generator is providing voltage. Small dip switches can be set to > completely lock out the load when running on generator voltage. Generac > Smart management module is the product name. There are also another > product from PSP called the SAK-60 that supposedly can do this with any > generator type (no direct experience with this). > > > > > > On Wed, Jan 21, 2026 at 3:01 PM Dave Angelini Offgrid Solar via > RE-wrenches <[email protected]> wrote: > > And in this case, with all the Ice storm doom and gloom coming, to alot of > the country, inform your users how to turn off their array and run a > generator safely! > > Offgrid is just so much easier sometimes. > > 😉 > > *Dave Angelini Offgrid Solar > "we go where powerlines don't" > <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ > <https://offgridsolar1.com/> <http://members.sti.net/offgridsolar/> > e-mail [email protected] <[email protected]> > text 209 813 0060* > > > On 2026-01-21 12:55 pm, Zeke Yewdall via RE-wrenches wrote: > > In that case, we're getting way off track and way more complicated :P > > Just put a contactor between the PV array and the POI using the NC > contacts, with the coil powered off the generator. Then the PV array can > never backfeed the generator because it'll be turned off anytime the > generator is running. > > Zeke > > ------------------ > > > Thanks but I'm just trying to grid-tie a small Enphase array without ESS > where the point of interconnection is on the customer side of the > generator/ATS. > > Trying to use existing wires in place to simplify and lower costs...but > the generator is my constraint because I need the PoI to be on line side of > the ATS. > > Howard "Scot" Arey > Owner, Solar CenTex > 254-300-1228 > > > > _______________________________________________ > 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 > > > > -- > > > > Mac Lewis > > * "Yo solo sé que no sé nada." -Sócrates * > _______________________________________________ > 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 > > -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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