Dave, My initial background comes from the Industrial Controls world w/ a strong military influence. Given that the generator probably has some kind of transfer switch, chances are that the transfer switch has a dry contact in which can be used to power a relay. I normally use ASCO transfer switches in this manner along with an Allen-Bradley contactor, P/N 400DP50ND3. This has a 120vac coil, 4 poles with a rating of 50 amps. Hope this helps.
Christopher On Tue, May 4, 2021 at 10:44 AM <drake.chamber...@redwoodalliance.org> wrote: > Get a contactor with a 240 VAC coil. Connect the coil wire wires to the > 240 V output circuit of the generator, so when the generator comes on, the > contactor opens. Run the current from the AC coupled Enphase inverters > through the contacts from common to N/C. > > --- > > > > On 2021-05-03 10:26, Dave Tedeyan wrote: > > Hi All, > > I am planning on using a Sol-Ark for the first time for adding battery > backup to an existing system. It is Enphase, so clearly it will be AC > coupled, and there is a whole house generator. When I talked to Sol-Ark > about it, they recommended putting the generator on a time of use schedule > to not allow it to come on during the day so that we don't run into the > issue of the solar backfeeding the generator. > > I was wondering though if anyone has just used a contactor to cut out the > solar when the generator turns on? Something like Outback's GS-AC-Gen-Kit, > although in this case I will need something rated for just over 30A. This > seems like a better way to allow the generator to run at any time it is > needed, especially if it is a gloomy, snowy, winter day. > > Cheers, > Dave > > -- > *Dave Tedeyan, PE* > [image: Sungineer Solar] > 1653 Slaterville Road, Ithaca, NY 14850 > Cell: 607-288-2898 > www.sungineersolar.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 > > -- Chris Schaefer’s <http:www.solarandwindfx.com> *Tel/Fax 585-229-2083 or Cell 585-748-1870 * *5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com <http://www.solarandwindfx.com> ~ E-mail: ch...@solarandwindfx.com <ch...@solarandwindfx.com>* Thomas Jefferson, the author of our great Constitution, once said, "democracy" will cease to exist when you take away from those who are willing to work and give to those who would not."
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