<div dir="ltr">Hi George, It's good to see you're still with REC. <div><br></div><div>I'd assume this would fall under the purview of UL rather than NEC. Anything that meets UL will pass NEC. With temperature derates I think you'd have had to go to larger wire long ago to meet NEC standards. </div><div><br></div><div>It might be good to go to a larger wire to keep V drop low. </div><div><br></div><div>Brad Bassett</div><div>retired, but still interested. </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 8, 2023 at 9:07 AM George McClellan via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg-684983339043109478">
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<p class="MsoNormal">Team;<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">With the move to larger cells, some modules have an Isc that is pushing the limits of 12 AWG wire. If I apply the rule of 156% (or 125% solar derate*125% continuous load derate) to an 18 Amp Isc module this will exceed the 25A that a 12
AWG wire can carry. I understand that the homeruns will need to be a larger AWG (10 ga), but do the solar module cables (from junction box to MC4) also need to be larger? Any guidance or reference material would be greatly appreciated.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thx,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">George McClellan | Senior Technical Sales Manager | REC Americas LLC
<u></u><u></u></p>
<p class="MsoNormal" style="margin-right:0in;margin-bottom:4pt;margin-left:0in;line-height:8pt">
330 James Way Ste 150<span lang="UK"> | </span>Pismo Beach, CA 93449<span lang="UK"> |
</span>USA<u></u><u></u></p>
<p class="MsoNormal">Cell phone +1 805 704 3226 | Fax +1 805 357 6104 <u></u><u></u></p>
<p class="MsoNormal"><span style="color:navy"><a href="http://www.recgroup.com/" title="http://www.recgroup.com/" target="_blank">www.recgroup.com</a>
</span><span style="color:black">| <a href="mailto:shannon.kent@recgroup.com" target="_blank">george.mcclellan@recgroup.com</a><u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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