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<p>A pix may help. Same for Offgrid with AC coupling. (2 sources)</p>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
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e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p id="reply-intro">On 2023-12-01 8:45 am, Dave Tedeyan via RE-wrenches wrote:</p>
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<div dir="ltr">Jeremy,
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<div>It is my understanding that if the generator wakes up the grid tied inverter and loads are more than the solar then maybe nothing bad would happen. Although I would never do that because you don't have any control over the loads. And if the solar production is more than the loads, then the excess energy feeds back to the generator and can break things. In other words, move the solar interconnection to the line side of the transfer switch so that there is no chance of the generator and solar "seeing" each other.</div>
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<div>Cheers,</div>
<div>Dave</div>
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<div class="v1gmail_attr" dir="ltr">On Thu, Nov 30, 2023 at 8:20 PM Jeremy Rodriguez via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
<blockquote class="v1gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">Has anyone experienced a grid tie inverter back feed a whole house backup generator after a utility outage? <br />What can happen ?<br /><br /><br />Jeremy Rodriguez <br />Solar Installation / Design<br />All Solar, Inc.<br />1453 M St. <br />Penrose Colorado 81240<br /><br />Sent by Jeremy's iPhone. Sorry for typos and shorthand. <br />_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" rel="noreferrer">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></blockquote>
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<td style="font-family: Arial,sans-serif; padding: 0px 0px 5px 10px; width: 400px; vertical-align: top;" valign="top"><span style="color: #ecbd00; font-size: 11pt; font-weight: bold;">Dave Tedeyan, P.E.<br /></span><span style="font-size: 11pt; font-weight: bold;"><span style="color: #ecbd00;">Owner | Sungineer Solar</span><br /></span></td>
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<td style="font-family: Arial,sans-serif; padding: 5px 0px 5px 10px; font-size: 10pt; vertical-align: top; line-height: 17px;" valign="top"><span style="color: #ecbd00;"><span style="font-weight: bold;">p: </span></span><span style="font-size: 13.3333px;"><span style="font-size: 10pt; color: #000000;">he | him | his</span></span><span style="color: #ecbd00;"><span style="font-weight: bold;"><br />a: </span></span><span style="font-size: 10pt; color: #000000;">1653 Slaterville Rd.</span> <span style="font-size: 10pt; color: #000000;">| Ithaca, NY 14850</span><br /><span style="color: #ecbd00;"><span style="font-weight: bold;">w:</span></span><a style="color: #337ab7; background-color: transparent;" href="http://www.sungineersolar.com/" target="_blank" rel="noopener noreferrer"><span style="font-size: 10pt; color: #000000;"> www.sungineersolar.com</span></a><br /><span style="color: #ecbd00;"><span style="font-weight: bold;">c:</span></span><span style="font-size: 10pt; color: #000000;"> (607) 270-0370</span></td>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">_______________________________________________<br />List sponsored by Redwood Alliance<br /><br />Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank" rel="noopener noreferrer">http://re-wrenches.org</a><br /><br />List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br /><br />Change listserver email address & settings:<br /><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br /><br />There are two list archives for searching. When one doesn't work, try the other:<br /><a href="https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/" target="_blank" rel="noopener noreferrer">https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/</a><br /><a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org" target="_blank" rel="noopener noreferrer">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br /><br />List rules & etiquette:<br /><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank" rel="noopener noreferrer">http://www.re-wrenches.org/etiquette.htm</a><br /><br />Check out or update participant bios:<br /><a href="http://www.members.re-wrenches.org" target="_blank" rel="noopener noreferrer">http://www.members.re-wrenches.org</a><br /><br /></div>
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