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<p>William,</p>

<p>Sol-Ark says they can only connect to a Wye, and that they need a neutral.</p>

<p>Thanks,</p>

<p>Drake</p>

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<p id="reply-intro">On 2023-06-06 11:34, William Miller via RE-wrenches wrote:</p>

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<div dir="auto">Drake:</div>

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<div dir="auto">You should be able to connect to a 120/240 split phase feeder. Avoid the stinger. I have done it with FXRs , works just fine. </div>

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<div dir="auto">Wm</div>

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<div class="v1gmail_attr" dir="ltr">On Tue, Jun 6, 2023 at 8:11 AM Drake Chamberlin 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: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">Hello All,<br /><br />We are looking for a transformer to connect Sol-Ark inverters to an open <br />delta service. The Sol-Ark can only connect to a Wye configuration.<br /><br />We found one which the supplier says will do the job. It is an MGM, 240 <br />Delta to 208Y/120 Volt, 3-Phase.<br /><br />The supplier says this will derive a neutral which can be grounded for a <br />solid neutral connection.<br /><br />My concerns with what we have found so far are:<br />1) How much efficiency will be lost due to connecting to an open delta?<br />2) Will the derived neutral really be sufficient?<br />3) The cost of the unit we found is high. Does anyone know of a source <br />for economically priced transformers.<br /><br />Thank you,<br /><br />Drake<br /><br />Drake Chamberlin<br />Athens Electric LLC<br />Ohio Electrical Contractor's License 44810<br />CO Master Electrician's License 4526<br />NABCEP Certified PV Installation Professional<br /><br /><br /><br /><br />-- <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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<div class="v1gmail_signature" dir="ltr"><br />William Miller<br />Miller Solar.com<br />805-438-5600<br /><a href="http://www.millersolar.com" target="_blank" rel="noopener noreferrer">www.millersolar.com</a></div>

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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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