<p>If it is all Grundfos electronics and the panels they specify, then I would get a permit and let the inspector make the decision.</p>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" target="_blank">http://members.sti.net/offgridsolar/</a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre>
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<p>On Tue, 27 Oct 2020 12:11:17 -0700, Brian Mehalic <brian@solarenergy.org> wrote:</p>
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<div dir="ltr">Well Jay, if you call each of those poles "arrays" then you've got a path around the 2 parallel circuit maximum :)
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<p class="gmail-p1" style="margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; line-height: normal; color: #000000;"><span style="font-family: arial, sans-serif;">Note 2020 NEC language has changed a bit, though it's still not crystal clear: </span></p>
<p class="gmail-p1" style="margin: 0px; font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; line-height: normal; color: #000000;"><span style="font-family: arial, sans-serif;">"PV system dc circuits that exceed 30 volts or 8 amperes shall be provided with dc ground-fault protection meeting the requirements of 690.41(B)(1) and (B)(2) to reduce fire hazards.<span class="gmail-Apple-converted-space"> </span>Solidly grounded PV source circuits with not more than two modules in parallel and not on or in buildings shall be permitted without ground-fault protection."</span></p>
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<div>Brian Mehalic <br />NABCEP Certified Solar PV Installation Professional™ R031508-59</div>
<div>National Electrical Code® CMP-4 Member</div>
<div>(520) 204-6639<br />
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<div>Solar Energy International<br /><a href="http://www.solarenergy.org">http://www.solarenergy.org</a></div>
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<div>SEI Professional Services</div>
<div><a href="http://www.seisolarpros.com"><span style="font-size: 12.8px;">http://www.s</span>eisolarpros.com</a></div>
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<div class="gmail_attr" dir="ltr">On Tue, Oct 27, 2020 at 11:40 AM jay <<a href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>> wrote:</div>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">HI All,<br /> <br /> I've got a question about GFDI requirements and do they apply to the following. <br /> <br /> Here is the project.<br /> <br /> 1. water pumping DC direct grundfos SQFLex <br /> <br /> 2. no humans anywhere around<br /> <br /> 3. no buildings or living structures<br /> <br /> 4. would be 3 pole mounts: each mount as 1 string, so 3 strings.<br /> 2019 code 690.41 B2 says that 2 modules in parallel without humans involved doesn't need GFDI<br /> <br /> 5. system would be solidly grounded.<br /> <br /> So what is the requirement for needing GFDI on this project?<br /> <br /> thanks<br /> <br /> jay<br /> <br /> <br /> <br /> <br /> <br /> <br /> _______________________________________________<br /> List sponsored by Redwood Alliance<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">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/">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">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">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">http://www.members.re-wrenches.org</a><br /> </blockquote>
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