[RE-wrenches] Micro inverter OCP

[Jay]

Hi Will,

Sorry, didn’t mean too.

Reading between the lines, once inspected the faulty breaker was somehow replaced with a normal one. 

And so to my question, at this point they are no known arc/ground fault backfeed approved rated breakers?

Jay



> On Apr 25, 2019, at 11:45 AM, Will White <will at solarenergy.org> wrote:
> 
> Jay,
> 
> You're triggering some serious PTSD with this question. When 2017 NEC came out Mass was the first state to adopt it and the inspectors started requiring arc fault breakers on the micro inverter branch circuits, we were using Enphase. At the time they didn't work, weren't really listed for backfeed, and caused all kinds of problems. We ended up appealing to the state board and lost only for the state board to turn around a few months later and repeal that requirement. We ended up with thousands of dollars in arc fault breakers sitting in boxes in the shop.
> 
> I'm not sure if they've worked out the technical issues but if it's anything like it was in the past it's going to be a nightmare of false arc faults.
> 
> Thanks,
> Will
> 
>> On Thu, Apr 25, 2019 at 1:10 PM Jay <jay.peltz at gmail.com> wrote:
>> Hi all,
>> 
>> For micro inverters,  what OCP is available for ground fault ( or arc fault) 
>> for roof top mounted on a living structure?
>> 
>> Thx
>> Jay
>> 
>> 
>> _______________________________________________
>> List sponsored by Redwood Alliance
>> 
>> List Address: RE-wrenches at 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
>> 
> 
> 
> -- 
> Will White
> Curriculum Developer
> 
> 
> e: will at solarenergy.org 
> w: www.solarenergy.org 
> p: 802-272-3092
> 
> NABCEP Certified PV Installation Professional
> # 093006-34
> 
> FACT:  If we covered 0.33% of the earth with solar panels, we could power the world with renewable energy.
> Do you envision a world powered by renewable energy? Be the change.
> _______________________________________________
> List sponsored by Redwood Alliance
> 
> List Address: RE-wrenches at 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
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches_lists.re-wrenches.org/attachments/20190425/09984887/attachment.htm>