<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<font face="Helvetica, Arial, sans-serif">690.35(D) does <b>not</b>
require PV WIRE be used for the whole dc circuit. You can use
either: (quoting directly from 2008)<br>
1) Nonmetallic jacketed multiconductor cables<br>
2) Conductors installed in raceways, or<br>
3) Conductors listed and identified as PV WIRE installed as
exposed, single conductors<br>
<br>
Similarly, I don't believe that the NEC requires red and black
color coding, either, though it makes the most sense given
convention.<br>
<br>
Note Brian Teitelbaum's 6/3 email about PV WIRE noting that
"double-insulated" is a bit of a misnomer. Some PV WIRE is single-insulated.<br>
<br>
DKC<br>
<br>
<br>
</font>
<div class="moz-cite-prefix">On 2013/6/28 13:47, <a class="moz-txt-link-abbreviated" href="mailto:aram@aramsolar.com">aram@aramsolar.com</a>
wrote:<br>
</div>
<blockquote
cite="mid:20130628104745.b57827851f1f1a43d2e57a598576ec83.77bf2235b3.wbe@email16.secureserver.net"
type="cite"><span style="font-family:Verdana; color:#000;
font-size:10pt;">
<div>In ungrounded systems the PV wire requirement is to be used
the whole DC circuit, so that is all the way to the inverter.
690.35 (D) is pretty clear . Because it is ungrounded the
protection is the PV wire's fire rating and you don't get that
with thhn/thwn.</div>
<div>And of course Red for positive and black for negative. </div>
<div>Most building departments have not pick up on this yet. But
they will. </div>
<div><br>
</div>
<div>Aram</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<blockquote id="replyBlockquote" webmail="1" style="border-left:
2px solid blue; margin-left: 8px; padding-left: 8px;
font-size:10pt; color:black; font-family:verdana;">
<div id="wmQuoteWrapper">
-------- Original Message --------<br>
Subject: Re: [RE-wrenches] double insulated wire<br>
From: Will White <<a moz-do-not-send="true"
href="mailto:William.White@realgoods.com">William.White@realgoods.com</a>><br>
Date: Fri, June 28, 2013 10:23 am<br>
To: RE-wrenches <<a moz-do-not-send="true"
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
<br>
<style>
#wmQuoteWrapper /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;}
#wmQuoteWrapper @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;}
#wmQuoteWrapper /* Style Definitions */ p.MsoNormal, #wmQuoteWrapper li.MsoNormal, #wmQuoteWrapper div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri","sans-serif";}
#wmQuoteWrapper a:link, #wmQuoteWrapper span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;}
#wmQuoteWrapper a:visited, #wmQuoteWrapper span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;}
#wmQuoteWrapper span.EmailStyle17 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:windowtext;}
#wmQuoteWrapper span.EmailStyle18 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:windowtext;}
#wmQuoteWrapper .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;}
#wmQuoteWrapper @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;}
#wmQuoteWrapper div.WordSection1 {page:WordSection1;}
</style>
<div class="WordSection1">
<div class="MsoNormal" style="font-size:12pt;">We use PV
Wire which is double insulated on the roof in free air
and regular THHN/TNWN for the run from the junction box
back to the inverter (using no white or gray wires of
course).<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;">Thanks,<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;">Will<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><a
moz-do-not-send="true" target="_blank" name="_top"></a><u><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">__________________________________________________________________________________________<o:p></o:p></span></u></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Will
White<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Regional
Field Operations Manager – New England<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E"><o:p> </o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Real
Goods Solar<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">64
Main St.<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Montpelier,
VT 05602<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Tel:
(802) 223-7804<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Cell:
(802) 234-3167<o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E"><a
moz-do-not-send="true" target="_blank"
href="http://www.realgoodssolar.com/"><span
style="color:blue">www.realgoodssolar.com</span></a><o:p></o:p></span></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<div class="MsoNormal" style="font-size:12pt;"><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"">
<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>Marco Mangelsdorf<br>
<b>Sent:</b> Friday, June 28, 2013 1:10 PM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> [RE-wrenches] double insulated
wire<o:p></o:p></span></div>
</div>
</div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;">I’m kinda
confused. With more transformerless inverters on the
market (e.g., SMA and Power-One), it’s not clear to me
if double insulated wiring needs to be used all the way
from each series string to their respective inverter.<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;">We’ve been
installing the P1 3-6 kW TL inverters and there’s no
apparent mention of needing to use such conductors, yet
I remember needing to do so when I installed a number of
the 8, 9 and 10 kW SMA TL inverters.<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;"><o:p> </o:p></div>
<div class="MsoNormal" style="font-size:12pt;">Thanks,<o:p></o:p></div>
<div class="MsoNormal" style="font-size:12pt;">marco<o:p></o:p></div>
</div>
<hr>_______________________________________________<br>
List sponsored by Home Power magazine<br>
<br>
List Address: <a moz-do-not-send="true"
href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Change email address & settings:<br>
<a moz-do-not-send="true"
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 moz-do-not-send="true"
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 moz-do-not-send="true"
href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out participant bios:<br>
<a moz-do-not-send="true"
href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br>
<br>
</div>
</blockquote>
</span>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
List sponsored by Home Power magazine
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Change email address & settings:
<a class="moz-txt-link-freetext" 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>
List-Archive: <a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a>
List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>
Check out participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>
</pre>
</blockquote>
<br>
</body>
</html>