<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Matt,<div><br></div><div>I recently asked an expert where arc flash would be an issue for PV installers. The answer was: not much threat on DC side, because of (relatively) low power, on the AC side, it's the 480V enclosures.</div><div><br></div><div>Blessings,</div><div>Kelly</div><div><br></div><div><span class="Apple-style-span" style="font-size: 14px; "><div>Kelly Larson, Electrical Engineer</div><div>Box 104<br>Piercy, CA 95587<br>707-247-3000<br>NAPCEP Certified Solar PV Installer<br>CA C-10 # 868189</div><div><a href="mailto:SolarKelly@asis.com">SolarKelly@asis.com</a></div><div><br></div></span><div><div>On Mar 23, 2010, at 4:36 PM, Matt Lafferty wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div> <div><span class="921061523-23032010"><font size="2" face="Arial">Wrenches,</font></span></div> <div><span class="921061523-23032010"><font size="2" face="Arial"></font></span> </div> <div><span class="921061523-23032010"><font size="2" face="Arial">You know solar is prime-time when it hits the mainstream "What's wrong with this picture" quiz! <a href="http://ecmweb.com/nec/whats_wrong_here/whats_wrong_020410/">http://ecmweb.com/nec/whats_wrong_here/whats_wrong_020410/</a></font></span></div> <div><span class="921061523-23032010"><font size="2" face="Arial"></font></span> </div> <div><span class="921061523-23032010"><font size="2" face="Arial">How are you dealing with NEC 110.16? </font></span></div> <div><span class="921061523-23032010"><font size="2" face="Arial"></font></span> </div> <div><span class="921061523-23032010"><font size="2" face="Arial"><strong>2008 NEC 110.16 Flash Protection.<br></strong>Electrical equipment, such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers, that are in other than dwelling occupancies, and are likely to require examination, adjustment, servicing, or maintenance while energized shall be field marked to warn qualified persons of potential electric arc flash hazards. The marking shall be located so as to be clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.</font></span></div> <div><font size="2" face="Arial"></font> </div> <div><font size="2" face="Arial"><span class="921061523-23032010">I'm seeing all flavors out there. Including the most common, pretending it doesn't exist. Back in the day, relying on Qualified Persons Only and Danger! High Voltage! You Can Die If You Touch It (or similar) was enough. </span></font><font size="2" face="Arial"><span class="921061523-23032010">Are you finding building inspectors that are requiring the specific Arc Flash Hazard signage? In addition to, or in lieu of, other signage?</span></font></div> <div><font size="2" face="Arial"><span class="921061523-23032010"></span></font> </div> <div><font size="2" face="Arial"><span class="921061523-23032010">Separate, but related issue: Now that OSHA and NFPA 70e are dancing to the same song, has this affected your operations? If so, in what way?</span></font></div> <div><font size="2" face="Arial"><span class="921061523-23032010"></span></font> </div> <div><span class="921061523-23032010"></span><font size="2" face="Arial"><span class="921061523-23032010">Keep it Safe and Sunny!</span></font></div> <div><font size="2" face="Arial"><span class="921061523-23032010"></span></font> </div> <div><font size="2" face="Arial"><span class="921061523-23032010">-Matt Lafferty</span></font></div></div> _______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & 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: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<br><br>List rules & etiquette:<br>www.re-wrenches.org/etiquette.htm<br><br>Check out participant bios:<br>www.members.re-wrenches.org<br><br></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br class="Apple-interchange-newline"><br></div><div><br></div><div>Kelly Larson, Electrical Engineer</div><div>Box 104<br>Piercy, CA 95587<br>707-247-3000<br>NAPCEP Certified Solar PV Installer<br>CA C-10 # 868189</div><div><a href="mailto:SolarKelly@asis.com">SolarKelly@asis.com</a></div><div><br></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline"></div></span> </div><br></div></body></html>