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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>We did a single axis tracker some time ago and used a hydraulic hose between moving parts as a conduit. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>It has lasted for the 5 years they have been in service with no signs of deterioration.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img width=547 height=730 id="Picture_x0020_1" src="cid:image003.png@01D12D2B.FD617000"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Good luck,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Glenn<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> RE-wrenches [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Jerry Shafer<br><b>Sent:</b> Tuesday, December 01, 2015 12:06 AM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] Wire management dual axis tracker<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal>Wrenches<o:p></o:p></p></div><p class=MsoNormal>For some of our off grid customers we have installed the combiner on the array right behind the gimble and then only run the home run wire down, fewer wires is better. We try to keep the run in a loop 720` real close to the gimble, the loop reduces wire stress and we have had no failures. <o:p></o:p></p></div><p class=MsoNormal>Jerry<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Mon, Nov 30, 2015 at 5:35 PM, Ray Walters <<a href="mailto:ray@solarray.com" target="_blank">ray@solarray.com</a>> wrote:<o:p></o:p></p><div><p class=MsoNormal>We used to just bundle the PV cables and secure them close to the pivot point at both the rack and the pole with insulated wire loom clamps. We always made a big enough loop to handle full articulation, but not too long so they wouldn't catch on the Combiner box, etc. We also started using braided ground strap, instead of stranded #6. Braided is made for movement, stranded #6 would strain harden and break off at the connector.<br>I'm not sure how flex conduit would do. It definitely could break out of a plastic J box, I would think. The back and forth motion eventually wears out things not really made to move. I had lots of trouble with this issue.<br>Finally, don't be greedy on tracker settings, I'd keep the total range of motion to less than a full 180 degrees Azimuth, and probably limit the tilt some too. <br><br><o:p></o:p></p><pre>R.Ray Walters<o:p></o:p></pre><pre>CTO, Solarray, Inc<o:p></o:p></pre><pre>Nabcep Certified PV Installer, <o:p></o:p></pre><pre>Licensed Master Electrician<o:p></o:p></pre><pre>Solar Design Engineer<o:p></o:p></pre><pre><a href="tel:303%20505-8760" target="_blank">303 505-8760</a><o:p></o:p></pre><div><div><div><p class=MsoNormal>On 11/30/2015 8:21 PM, Mac Lewis wrote:<o:p></o:p></p></div></div></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><div><p class=MsoNormal>Hi Wrenches, <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm looking for advice on the best way(s) to secure PV source circuit wiring on a dual axis tracker. I've never wired one up before and it seems tricky. This particular tracker is 12 modules, 3 strings. Is it best to run a flexible conduit up the pole and leave plenty of excess conduit to create large loops that fluctuate in size throughout the day? What are some other ideas? How do you avoid abrasion over time? <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks in advance<br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Mac Lewis<b><span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></b></p><p><span style='color:#305A78'>"Yo solo sé que no sé nada." </span><b><span style='color:#686868'>-Sócrates</span></b><b><span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></b></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p></div></div><pre>_______________________________________________<o:p></o:p></pre><pre>List sponsored by Redwood Alliance<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Change listserver email address & settings:<o:p></o:p></pre><pre><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><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>List rules & etiquette:<o:p></o:p></pre><pre><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Check out or update participant bios:<o:p></o:p></pre><pre><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">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">www.members.re-wrenches.org</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>