<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I don't think any bolts, washers, nuts, screws, lags, all thread, etc are UL listed either. There aren't UL batteries, so they can't prevent us from powering off grid homes. Is concrete UL listed, when we do a ground mount array or a Uffer ground? <div>The card being played here is article 110.2 'equipment shall be acceptable only if approved'; then article 100 defines approved as being 'acceptable to the AHJ' I call this little bit of NEC BS, the AHJ = God conundrum. 110.3 (A) provides many other criteria besides listing to verify the acceptability of equipment, so regardless of the seemingly omnipotent 110.2, an AHJ can't reasonably require equipment that doesn't exist.<br><div><br></div><div>Ray</div><div><br><div><div>On Jul 19, 2012, at 5:12 PM, Jay Peltz wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div bgcolor="#FFFFFF"><div>Is unistrut UL?</div><div><br></div><div>Kay</div><div><br></div><div>Peltz power<br><br>Sent from my iPhone</div><div><br>On Jul 19, 2012, at 6:36 PM, "Marco Mangelsdorf" <<a href="mailto:marco@pvthawaii.com">marco@pvthawaii.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>
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<div class="Section1"><p class="MsoNormal">Does anyone know whether there are U.L. standards when it
comes to PV mounting hardware?<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">That is, are there any mounting hardware manufacturers
(UniRac, Professional Solar Products, DPW, Schletter) who have achieved U.L.
listing/approval for their stuff?<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">After using PSP for the past 12 years here on the Big Island
of Hawaii, now, all of a sudden the new building division head is taking an
interest as to whether PSP hardware is U.L. something or other.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">So very frustrating....<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><p class="MsoNormal"><o:p> </o:p></p>
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