Re: [RE-wrenches] Micro inverter OCP

2019-04-26 Thread Will White 
Exactly, when we had problems most inspectors would let us swap out for
standard breakers. I'd check with the micro manufacturer and see if they
have one that's compatible but as Brian said they took that code
requirement out of the 2017 NEC so I must have had my dates mixed up and it
was in the 2014 code version.

Thanks,
Will

On Fri, Apr 26, 2019 at 10:12 AM Jay  wrote:

> 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  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  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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>
> --
> *Will White*
> Curriculum Developer
>
>
> e: w...@solarenergy.org
> w: www.solarenergy.org
> p: 802-272-3092
>
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> # 093006-34
>
> *FACT:  If we covered 0.33% of the earth with solar panels, we could power
> the world with renewable energy.*
>
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> .
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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
.
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Re: [RE-wrenches] Micro inverter OCP

2019-04-26 Thread 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  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  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@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: w...@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@lists.re-wrenches.org
> 
> Change listserver email address & settings:
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Re: [RE-wrenches] Micro inverter OCP

2019-04-25 Thread Will White 
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  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@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
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>
> 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: w...@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
.
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Re: [RE-wrenches] Micro inverter OCP

2019-04-25 Thread Nick Soleil 
Hi Jay,


ArcFault protection is only required for systems operating over 80V, so isn't 
required for most microinverters.


Enphase microinverters include ground-fault protection integral to the 
microinverters and the GFI can be reset if it trips.  Enphase provides 
instructions on reseting a tripped GFI in our Envoy Installation Manuals, 
including in this doucment:

https://enphase.com/sites/default/files/downloads/support/IQ-Envoy-Manual-EN-US.pdf#page=40


Cordially,

Nick Soleil

Enphase Energy Senior Product Manager, Envoy and Accessories

(707) 763-4784 x7267  // office

(707) 321-2937  // cell

Powering What’s Next™ | The Enphase Energy Management 
System<https://enphase.com/en-us/products-and-services/envoy>

NABCEP Certified Solar PV Installer #03262011-300

California C10 Licensed Electrician #986315



From: RE-wrenches  on behalf of Jay 

Sent: Thursday, April 25, 2019 7:15 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Micro inverter OCP

EXTERNAL EMAIL - Use caution when responding, clicking, and/or downloading 
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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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Re: [RE-wrenches] Micro inverter OCP

2019-04-25 Thread Brian Mehalic 
Is this in regards to 2014 NEC 705.12(D)(6)? This requirement was deleted
in 2017.

Brian Mehalic
NABCEP Certified Solar PV Installation Professional™ R031508-59
National Electrical Code® CMP-4 Member
(520) 204-6639

Solar Energy International
http://www.solarenergy.org

SEI Professional Services
http://www.seisolarpros.com



On Thu, Apr 25, 2019 at 11:10 AM Jay  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@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
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>
> List rules & etiquette:
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>
> Check out or update participant bios:
> www.members.re-wrenches.org
>
>
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[RE-wrenches] Micro inverter OCP

2019-04-25 Thread Jay 
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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