Hi Mark, Thanks for that. It makes sense. My preference would be language that said "utility-interactive current" instead of "AC output current". For a bi-directional inverter, I can see how an inspector would assume that the AC output current would be the current supplying the critical load panel and cause confusion.
On Fri, Aug 12, 2016 at 7:39 AM, Mark Westbrock < westbr...@positiveenergysolar.com> wrote: > Hi Mac, > > 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%". > > So, the 2014 wording basically allows all inverters to follow the > exception that used to be there for hybrid inverters. I hope that helps. > > Cheers, > > Mark > > ---- > Mark Westbrock| VP, Branch Manager | Employee Owner > NABCEP™ Certified PV Installation Professional > NABCEP™ Certified > Technical Sales Professional > NM EE98J Licensed Electrician > 510 S. Main St., Las Cruces, NM 88001 > cell 575.640.2432 | office 575.524.2030 > m...@positiveenergysolar.com <your.em...@positiveenergysolar.com> > www.PositiveEnergySolar.com <http://www.positiveenergysolar.com/> > > <http://www.positiveenergysolar.com> > > > On Fri, Aug 12, 2016 at 7:26 AM, Mac Lewis <maclew...@gmail.com> wrote: > >> Hello wrenches, >> >> 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. >> >> Thanks in advance code experts >> >> >> >> -- >> >> >> >> Mac Lewis >> >> *"Yo solo sé que no sé nada." -Sócrates* >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: http://www.mail-archive.com/re >> -wrenc...@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches. > org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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