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 <[email protected]> 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 <[email protected]> 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
>> 
>> 
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