[RE-wrenches] Enphase and Romex

[Jason Szumlanski]

William,

I have not been successful arguing that the load is integral within the
array despite the fact that the DC load is clearly utilized at the
microinverter. This has been a point of contention in area jurisdictions
since NEC 2008 was adopted and we started installing microinverters. Maybe
it's time to take another run at it, citing the elimination of the section
in NEC 2011.

Regarding the bare CU in the attic, some local inspectors have a real issue
with what is "subject to physical damage." I'd like some code citations to
be ready if anyone has it handy.

*Jason Szumlanski*

*Fafco Solar*

On Thu, Oct 25, 2012 at 10:11 AM, William Miller <william at millersolar.com>wrote:

> Jason:
>
> You can run a 6 or 8 bare in the attic (don't have the book handy)
> alongside your romex.
>
> 690.47 has an exception exempting the supplementary electrode if the DC
> load is within the array, which is the case.
>
> William
>
>
> On Oct 25, 2012, at 6:12 AM, Jason Szumlanski <jason at fafcosolar.com>
> wrote:
>
> I'm sure this has been covered, but I could not find it in the archives.
>
> We are considering using Romex in the attic for the first time. My plan
> was to use the new Enphase coupler to connect the trunk cable to Type
> TC-ER, enter a Soladeck passthrough box on the roof into a junction box in
> the attic where I would make the transition to 10/3 Romex. I'm hung up on
> the GEC going back to the service panel. Any suggestions?
>
> By the way, we are on NEC 2008, and in most cases there is also a
> requirement for an additional grounding electrode per NEC 690.47(D) (that
> shouldn't really relate to my issue).
>
> *Jason Szumlanski** *
>
> *Fafco Solar*
>
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