[RE-wrenches] Listed systems

[William Miller]

Only if I field-fabricated the cable. Then I’d have to verify wire gauge by
citing the current and temperature derate. We don’t add any cable. It’s all
factory provided and listed.

https://millersolar.com/MillerSolar/practices/PV_wiring/Hinge/Hinge.html

Thanks for looking at this. You guys and gals are always helpful.

William Miller
Miller Solar.com
805-438-5600
www.millersolar.com


On Fri, Apr 4, 2025 at 3:14 PM Jay <jay.peltz at gmail.com> wrote:

> I dont know which code you’re on.
> Wouldn’t 690.31.c.1 work?
> (2020)
>
>
> On Apr 4, 2025, at 3:50 PM, William Miller via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
>
> Friends:
>
> There is nothing like an argument with a building official to make me
> question my sanity.
>
> We are permitting an Enphase system. The plan checker says we are required
>  to declare our PV wiring is in compliance with 690.31.
>
> As I read 690.31 the first paragraph tells me the section does not apply
> because we are installing a listed system. The PV leads are covers under
> the module listing and the Q cable under the Enphase listing. There are no
> jumpers. 690.31 says listed systems “shall be permitted.”
>
> The wording is a bit confusing but that is my interpretation.
>
> Am I missing something?
>
> Thanks in advance.
>
>
> William Miller
> Miller Solar.com
> 805-438-5600
> www.millersolar.com
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