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--></style></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I agree with an earlier response\u2026isn\u2019t this a NABCEP PV Installation Professional-only forum? The original question is DC-string design 101. Jerry is spot on for coldest temp adjustments, RSD considerations if required. But selecting a home run wire for separate string inputs to the inverter??? How can this be asked here?<br><br>Ron, are you NABCEP PV Installation Pro certified?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Scot Arey<o:p></o:p></p><p class=MsoNormal>Owner, Solar CenTex<br><br><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> <b>On Behalf Of </b>Jerry Shafer via RE-wrenches<br><b>Sent:</b> Tuesday, April 12, 2022 10:27 PM<br><b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br><b>Cc:</b> Jerry Shafer <jerrysgarage01@gmail.com><br><b>Subject:</b> Re: [RE-wrenches] Sol-Ark install<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Need more than this, we have amperage, we need distance, temp, # of wires per conduit, also at 480 you may want to verify cold temp for over the top voltage @ VOC, any RSD device(s) being used? Help to have total module count, as an example use a combiner to make 4 strings, 2 of equal voltage per input. For battery backup or off grid, Solark is the easiest you will get. <o:p></o:p></p><div><p class=MsoNormal>Jerry<o:p></o:p></p></div><div><p class=MsoNormal> NABCEP PV Inspector <o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Tue, Apr 12, 2022, 7:42 PM Ron Young via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal>Hi Wrenches, trying to wrap my head around a first time Sol-Ark install. Because the max DC voltage is 500v at 18a and the PV I\u2019m using is 40v DC each I will have to create three strings each 480v. What would be the best choice for a home run wire? I\u2019ve always used smaller strings with micro inverters, a combiner at the array and a single Teck home run cable but the string inverter presents a different scenario and it looks like I\u2019ll need to use three home run cables, one for each string. <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Ron Young<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='color:black'>earthRight Products - <a href="http://Solareagle.com" target="_blank">Solareagle.com</a><br>Alternative Energy Solutions ~ Renewable Energy Products<br><br><o:p></o:p></span></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank">http://re-wrenches.org</a><br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">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">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">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">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">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">http://www.members.re-wrenches.org</a><o:p></o:p></p></blockquote></div></div></body></html>