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<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Will<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a name="_top"></a><u><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">__________________________________________________________________________________________<o:p></o:p></span></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Will White<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Regional Field Operations Manager – New England<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Real Goods Solar<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">64 Main St.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Montpelier, VT 05602<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Tel: (802) 223-7804<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E">Cell: (802) 234-3167<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#0F243E"><a href="http://www.realgoodssolar.com/"><span style="color:blue">www.realgoodssolar.com</span></a><o:p></o:p></span></p>
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<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-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org]
<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></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">marco<o:p></o:p></p>
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