<p dir="ltr">Any time we do a ground array, at the array location we combine the strings and have a disconnect and it has come in handy to</p>
<div class="gmail_quote">On Oct 6, 2014 10:41 AM, "Mark Westbrock" <<a href="mailto:westbrock@positiveenergysolar.com">westbrock@positiveenergysolar.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">If you don't want to combine strings at the array, then I would use a Square D HU361 for each string. It is a lot of hardware, but not too expensive and very straightforward for a lay person to shut off without risk.<div><br></div><div>Cheers,</div><div><br></div><div>Mark</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">----<br><b>Mark Westbrock</b><br>Field Manager & Employee-Owner<div>NM EE98J Journeyman Electrician<br>NABCEP Certified PV Installation Professional<div>NABCEP Certified PV Technical Sales<br><br><div><br></div><div><a href="http://positiveenergysolar.com/" target="_blank"><img src="http://positiveenergysolar.com/admin/content/uploads/PES-logo-3.jpg" width="200" height="86"></a><br></div><div><div><br></div><div>Positive Energy, Inc.<br><div>510 S. Main St.</div><div>Las Cruces, NM 88001<br>office: <a href="tel:575-524-2030" value="+15755242030" target="_blank">575-524-2030</a><br>cell: <a href="tel:575-640-2432" value="+15756402432" target="_blank">575-640-2432</a><br><a href="mailto:westbrock@positiveenergysolar.com" target="_blank">mw@positiveenergysolar.com</a><br><a href="http://www.positiveenergysolar.com" target="_blank">www.positiveenergysolar.com</a></div></div></div><div><br></div><div><img src="http://positiveenergysolar.com/admin/content/uploads/residential_national_dealers_2013_w.jpg"><br></div><div><br></div><div> <a href="http://www.nabcep.org/installer-locator?state=NM" target="_blank"><img src="http://positiveenergysolar.com/admin/content/uploads/NABCEP-installer.jpg-e1367536303488.jpg" width="96" height="81"></a><a href="http://www.nabcep.org/installer-locator?state=NM" target="_blank"> <img src="http://positiveenergysolar.com/admin/content/uploads/NABCEP-sales.jpg-e1367536139967.jpg" width="96" height="81"></a> <a href="http://www.solarreviews.com/installers/positive-energy-solar/" target="_blank"><img src="http://positiveenergysolar.com/admin/content/uploads/SolarReview-e1374100648314.jpg"></a> <a href="http://www.bcorporation.net/" target="_blank"><img src="http://positiveenergysolar.com/admin/content/uploads/E_BCorp_logo_POS-e1374100838300.jpg"></a></div></div></div></div></div>
<br><div class="gmail_quote">On Mon, Oct 6, 2014 at 1:13 PM, All Solar, Inc. <span dir="ltr"><<a href="mailto:allsolar@scswifi.net" target="_blank">allsolar@scswifi.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div>How about the Midnite Solar four pole disconnect?</div><div>Can't remember the model number but recently installed one on a two string TL input circuit. They are made for disconnecting both positive and negative. <br><br>Jeremy Rodriguez,<div>President<br><div><br></div><div>All Solar, Inc. <div>1463 M<br><div>Penrose Colorado 81240</div><div><a href="tel:719-372-3808" value="+17193723808" target="_blank">719-372-3808</a> office</div><div><a href="tel:719-372-3804" value="+17193723804" target="_blank">719-372-3804</a> fax</div><div><a href="http://www.asolarelectric.com" target="_blank">www.asolarelectric.com</a></div><div><br></div><div>Sent by Jeremy's iPhone. Sorry for typos and shorthand!</div></div></div></div></div><div><div><div><br>On Oct 6, 2014, at 12:40 PM, "William Miller" <<a href="mailto:william@millersolar.com" target="_blank">william@millersolar.com</a>> wrote:<br><br></div></div></div><blockquote type="cite"><div><div><div><div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Wrenches:<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">We are getting up to speed on using transformer-less inverters. I have advocated long for the additional safety offered by these inverters but I am realizing the trade-offs with the new technology: The implementation gets more complicated with the requirement for PV wire, OCPD and disconnecting means for plus and minus and plus providing Arc Flash rated equipment.<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">I am currently designing a system that will locate the PV about 400 feet from the residence. The system will utilize 2 Solectria 5200 watt inverters at the residence. I would like to provide disconnecting means for the 4 strings at the array, in case of any needed service or excavating. Preferably I\u2019d like the disconnecting means to be deployable by a lay person (i.e. the gardener).<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Finding an 8 pole, arc flash, 600 VDC rated disconnect is not easy. I could install an Outback 8 circuit combiner with 8 touch-safe fuse holders. The new combiners have had dead-fronts for a while now. The gardener needs only to have a Philips screw driver to open this cover. Any better ideas out there?<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Thanks,<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">William<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><u></u> <u></u></span></p></div></div><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><image002.jpg><br>Lic 773985<br></span><a href="http://www.millersolar.com/" target="_blank"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">millersolar.com</span></a><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><br><a href="tel:805-438-5600" value="+18054385600" target="_blank">805-438-5600</a><u></u><u></u></span></p><p class="MsoNormal"><u></u> <u></u></p></div></div></blockquote><span><blockquote type="cite"><div><span>_______________________________________________</span><br><span>List sponsored by Redwood Alliance</span><br><span></span><br><span>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.org</a></span><br><span></span><br><span>Change listserver email address & settings:</span><br><span><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></span><br><span></span><br><span>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></span><br><span></span><br><span>List rules & etiquette:</span><br><span><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a></span><br><span></span><br><span>Check out or update participant bios:</span><br><span><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a></span><br><span></span><br></div></blockquote></span></div><br>_______________________________________________<br>
List sponsored by Redwood Alliance<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>
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>
<br></blockquote></div><br></div>
<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>
<br></blockquote></div>