<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#44546A;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style></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:#44546a">William,</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">We have bumped into similar dilemmas when needing remote DC disconnects with TL inverters. I believe the Solectria you are using has two MPPTs? Ideally, you would keep each string separate to benefit from the dual trackers \u2013 this would mean four DC disconnects if you went with a standard product like a Square D HU361RB. If you combine each of the two strings out at the array(s) then you could get away with two disconnects, one for each inverter. Neither option is ideal.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Best,</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">August</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a">Luminalt</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#44546a"> </span></p><div><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:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>William Miller<br><b>Sent:</b> Monday, October 06, 2014 9:01 PM<br><b>To:</b> RE-wrenches<br><b>Subject:</b> Re: [RE-wrenches] TL inverter with long DC Feeder</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">Friends:</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">If only an SMA would work here. But DC volts too low. We are using Solectria PVI5200TLS. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">We do not use PV wire. We transition to THWN-2 in conduit immediately. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">William</p></div><div><p class="MsoNormal"><br>Miller Solar</p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>On Oct 6, 2014, at 8:30 PM, Chris Mason <<a href="mailto:cometenergysystems@gmail.com">cometenergysystems@gmail.com</a>> wrote:</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><div><p class="MsoNormal">I presumed SMA TL series. </p></div><div><p class="MsoNormal"> </p><div><p class="MsoNormal">On Mon, Oct 6, 2014 at 10:02 PM, Jerry Shafer <<a href="mailto:jerrysgarage01@gmail.com" target="_blank">jerrysgarage01@gmail.com</a>> wrote:</p><p>As i read the thread you say TL which TL SMA, AE ect. They have defferent dc input designs</p><div><div><div><p class="MsoNormal">On Oct 6, 2014 12:21 PM, "jay peltz" <<a href="mailto:jay@asis.com" target="_blank">jay@asis.com</a>> wrote:</p><div><p class="MsoNormal">I do believe the outback and midnite combiners have a lock hole to prevent exactly your concern.</p><div><p class="MsoNormal">unauthorized access.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">jay</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">peltz power</p><div><div><p class="MsoNormal">On Oct 6, 2014, at 11:40 AM, William Miller wrote:</p></div><p class="MsoNormal"><br><br></p><div><div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Wrenches:</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="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.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="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).</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="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?</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Thanks,</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">William</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></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><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="http://www.millersolar.com/" target="_blank"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">millersolar.com</span></a></span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><br><a href="tel:805-438-5600" target="_blank">805-438-5600</a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""></span></p></div><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> </span></p></div></div><p class="MsoNormal" style="margin-bottom:13.5pt"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">_______________________________________________<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></span></p></div></div><p class="MsoNormal"> </p></div></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" 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></p></div></div></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></p></div><p class="MsoNormal"><br><br clear="all"></p><div><p class="MsoNormal"> </p></div><p class="MsoNormal">-- </p><div><p class="MsoNormal">Chris Mason</p><div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">NABCEP Certified Solar PV Installer\u2122</span><span style="color:#888888"></span></p></div><div><p class="MsoNormal"><span style="color:#222222">Solar Design Engineer</span><span style="color:#888888"></span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">Generac Generators Industrial technician</span><span style="color:#888888"></span></p></div></div><div><p class="MsoNormal"><span style="color:#888888"> </span></p></div><div><p class="MsoNormal"><a href="http://www.cometenergysystems.com" target="_blank">www.cometsolar.com</a></p></div><div><p class="MsoNormal">264.235.5670</p></div><div><p class="MsoNormal">869.662.5670</p></div><div><p class="MsoNormal">Skype: netconcepts</p></div></div></div></div></blockquote><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal" style="margin-bottom:12.0pt">_______________________________________________<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>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">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">www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a></p></div></blockquote></div></body></html>