This may not be a good idea if you want to retain rapid shutdown compliance…
-Glenn From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of Jeff Clearwater Sent: Tuesday, May 04, 2021 12:20 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org>; Dave Tedeyan <d...@sungineersolar.com> Subject: Re: [RE-wrenches] Generator and AC coupling on a Sol-Ark Hi Dave ~ Well this might not be the answer you are looking for but I'd take a serious look at the relative hassle of rewiring the array to DC. Sol-Ark's shine in DC coupled mode - highly efficient - and then you have the generator port open (now not used for AC coupling) available for the generator. Depending on how accessible the MC4s are on the array and how easy to run DC wire it might not be that much work - with a much superior result. Best, Jeff -- ~~~~~~~~~~~ Jeff Clearwater Village Power Design linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/> www.villagepowerdesign.com <http://www.villagepowerdesign.com> cell - 413-559-9763 ~~~~~~~~~~~~~~~~~~~~~~~ Dave Tedeyan <mailto:d...@sungineersolar.com> May 3, 2021 at 7:26 AM 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 <http://sungineersolar.com/wp-content/uploads/2019/08/Sungineer-Logo-1.png> 1653 Slaterville Road, Ithaca, NY 14850 Cell: 607-288-2898 <http://www.sungineersolar.com/> 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 <mailto: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
