<div dir="ltr"><div><div>Mark, I read that section as stating that <u>both</u> must be true, which I would take to mean if one is using a 20 amp breaker to protect the output from a 3 kW inverter, you need to count it as 20 amps toward the 120% rule, not the 15.63 amps the 125% calculation would infer. I know that 2014 was changed to allow for larger breakers to feed hybrid inverters, but I can't recite the code that allows that (unless I am misreading the intent of the section you quoted). Can you clarify this for me?<br><br></div>Thanks,<br></div>Howie<br><div><div><div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><span style="color:rgb(120,63,4)"><b>Howie Michaelson</b></span><br><font size="1"><i>NABCEP Certified Solar PV Installer™</i></font><br><span style="color:rgb(106,168,79)"></span>Sun Catcher, LLC<br><span style="color:rgb(68,68,68)"><span style="background-color:rgb(255,255,255)"><font size="2">Renewable Energy Systems Sales and Service<br>VT Solar Electric Incentive Partner</font><span></span></span></span><br><span style="color:rgb(180,95,6)">802-272-0004</span></div></div></div>
<br><div class="gmail_quote">On Fri, Aug 12, 2016 at 9:39 AM, Mark Westbrock <span dir="ltr"><<a href="mailto:westbrock@positiveenergysolar.com" target="_blank">westbrock@positiveenergysolar.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-family:tahoma,sans-serif">Hi Mac,</div><div style="font-family:tahoma,sans-serif"><br></div><div style="font-family:tahoma,sans-serif">The wording changed because in the 2011 NEC 705.12(D) you had to use the size of your backfeed breaker in calculating the busbar loading, but in 2014, 705.12(D)(2)(3)(b) now says "125 percent of the inverter output circuit current and the rating of the OCPD protecting the busbar shall not exceed 120%". </div><div style="font-family:tahoma,sans-serif"><br></div><div style="font-family:tahoma,sans-serif">So, the 2014 wording basically allows all inverters to follow the exception that used to be there for hybrid inverters. I hope that helps.</div><div style="font-family:tahoma,sans-serif"><br></div><div style="font-family:tahoma,sans-serif">Cheers,</div><div style="font-family:tahoma,sans-serif"><br></div><div style="font-family:tahoma,sans-serif">Mark</div></div><div class="gmail_extra"><br clear="all"><div><div data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font><font><font><font>----</font></font></font></font></div><div dir="ltr"><div><div dir="ltr" style="font-size:12.8px"><font face="Calibri"><span style="font-size:15px"><font color="#0076be">Mark Westbrock</font><font color="#666666">| VP, Branch Manager | Employee Owner</font></span></font></div><div dir="ltr" style="font-size:12.8px"><font color="#666666" face="Calibri"><span style="font-size:15px"><div style="font-family:tahoma,sans-serif;font-size:small;color:rgb(68,68,68);display:inline">NABCEP™ Certified PV Installation Professional</div></span></font></div><div dir="ltr" style="font-size:12.8px"><span style="color:rgb(68,68,68);font-family:tahoma,sans-serif;font-size:small">NABCEP™ Certified </span><font color="#666666" face="Calibri"><span style="font-size:15px"><div style="font-family:tahoma,sans-serif;font-size:small;color:rgb(68,68,68);display:inline">Technical Sales Professional</div></span></font></div><div dir="ltr" style="font-size:12.8px"><span style="color:rgb(68,68,68);font-family:tahoma,sans-serif;font-size:small">NM EE98J Licensed Electrician</span><font color="#666666" face="Calibri"><span style="font-size:15px"><br></span></font><div><font color="#666666" face="Calibri"><span style="font-size:15px">510 S. Main St., Las Cruces, NM 88001</span></font></div><div><font color="#666666" face="Calibri"><span style="font-size:15px">cell <a href="tel:575.640.2432" value="+15756402432" target="_blank">575.640.2432</a> | office <a href="tel:575.524.2030" value="+15755242030" target="_blank">575.524.2030</a></span></font></div><div><font color="#3d85c6" face="Calibri"><span style="font-size:15px"><a href="mailto:Your.Email@PositiveEnergySolar.com" style="color:rgb(17,85,204)" target="_blank">mw@PositiveEnergySolar.com </a></span></font></div><div><font color="#3d85c6" face="Calibri"><span style="font-size:15px"><a href="http://www.positiveenergysolar.com/" style="color:rgb(17,85,204)" target="_blank">www.PositiveEnergySolar.com</a></span></font></div><div><font color="#3d85c6" face="Calibri"><br></font></div><div><a href="http://www.positiveenergysolar.com" target="_blank"><img src="https://www.positiveenergysolar.com/wp-content/uploads/Positive-Energy-Solar-horizxs.png" alt=""></a><font color="#3d85c6" face="Calibri"><br></font></div></div></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Fri, Aug 12, 2016 at 7:26 AM, Mac Lewis <span dir="ltr"><<a href="mailto:maclewis1@gmail.com" target="_blank">maclewis1@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello wrenches,<div><br></div><div>I am looking for the exception to the 120% rule in the 2014 code that allowed for compliance to the 120% rule to be based on the utility-interactive current as opposed to the backfeed breaker size for hybrid inverter. I hope this still exists, but I'm having a hard time finding it in the 2014 code. In 2011 it was 705.12(D)2 Exception. That was nice clear language that all inspectors accepted, I'm hoping the same exists for the 2014 code.</div><div><br></div><div>Thanks in advance code experts</div><span><font color="#888888"><div><br></div><div><br clear="all"><div><br></div>-- <br><div data-smartmail="gmail_signature"><div><br></div><div><font color="#305A78" face="'times new roman', serif"><br></font></div><div><br></div>Mac Lewis<br><br><span style="font-family:'Times New Roman';font-size:medium;color:rgb(255,153,0)"><b><font face="Arial, Helvetica, sans-serif" size="3"><p align="left"><font color="#000000" face="Verdana, Arial, Helvetica, sans-serif"><span style="font-size:small"><span style="font-family:arial;font-weight:normal;color:rgb(48,90,120)"><font face="'times new roman', serif">"Yo solo sé que no sé nada." </font><span style="font-weight:700;color:rgb(104,104,104)"><font face="'times new roman', serif">-Sócrates</font></span></span></span></font></p></font></b></span></div>
</div></font></span></div>
<br>______________________________<wbr>_________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">RE-wrenches@lists.re-wrenches.<wbr>org</a><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank">http://lists.re-wrenches.org/o<wbr>ptions.cgi/re-wrenches-re-wren<wbr>ches.org</a><br>
<br>
List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" rel="noreferrer" target="_blank">http://www.mail-archive.com/re<wbr>-wrenches@lists.re-wrenches.or<wbr>g/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer" target="_blank">www.re-wrenches.org/etiquette.<wbr>htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noreferrer" target="_blank">www.members.re-wrenches.org</a><br>
<br>
<br></blockquote></div><br></div>
<br>______________________________<wbr>_________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.<wbr>org</a><br>
<br>
Change listserver email address & settings:<br>
<a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" rel="noreferrer" target="_blank">http://lists.re-wrenches.org/<wbr>options.cgi/re-wrenches-re-<wbr>wrenches.org</a><br>
<br>
List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" rel="noreferrer" target="_blank">http://www.mail-archive.com/<wbr>re-wrenches@lists.re-wrenches.<wbr>org/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm" rel="noreferrer" target="_blank">www.re-wrenches.org/etiquette.<wbr>htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org" rel="noreferrer" target="_blank">www.members.re-wrenches.org</a><br>
<br>
<br></blockquote></div><br></div></div></div></div></div>