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<div id="signature">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. </div>
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<p id="reply-intro">On 2021-05-03 10:26, Dave Tedeyan wrote:</p>
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<div dir="ltr">Hi All,
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<div>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.</div>
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<div>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.</div>
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<div>Cheers, </div>
<div>Dave<br />
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<div dir="ltr" style="color: #888888;"><strong>Dave Tedeyan, PE</strong></div>
<div dir="ltr" style="color: #888888;"><img src="cid:16201369616091540106e85837115123@redwoodalliance.org" alt="Sungineer Solar" width="200" height="50" /><strong><br /></strong>
<div>1653 Slaterville Road, Ithaca, NY 14850</div>
<div>Cell: 607-288-2898</div>
<div><a style="color: #1155cc;" href="http://www.sungineersolar.com/" target="_blank" rel="noopener noreferrer">www.sungineersolar.com</a></div>
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