[RE-wrenches] wire management on Qcell AC module

[Rebekah Hren]

Please note we updated 2020 NEC 690.31(C)(1) to allow 24" between
securing/supporting points for PV cable, and removed the problematic
reference to 334.30.

The change was made because as you all know there is not always a way to
secure wires within 12" of a box on the back of a PV module. Of course
wires should definitely not be allowed to touch the roof but the hope is
that 24" allows for proper wire management but with a little more freedom.

2023 NEC will update to 24" for  ≤ 8awg, 54" for >8 awg.  If you disagree,
please let me know and we can work on a public input for 2026.

Best,
Rebekah

Licensed Electrical Contractor
NABCEP Certified Solar PV Installation Professional™ 091209-85
Tel: 336.266.8800



On Thu, Jun 2, 2022 at 10:02 AM Dana Orzel via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Tape is not approved as a wire retaining device as far as I can find in
> the NEC :-]
>
>
>
>
>
> Dana Orzel -  E - dana at solarwork.com -  C - 208.721.7003
>
>
>
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> *On
> Behalf Of *Jerry Shafer via RE-wrenches
> *Sent:* Thursday, June 2, 2022 9:40 AM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
> *Cc:* Jerry Shafer <jerrysgarage01 at gmail.com>
> *Subject:* Re: [RE-wrenches] wire management on Qcell AC module
>
>
>
> Regarding the tape on the back sheet
>
> I have seen Novis installers keep the tape to secure the modules and I
> have also seen it with the tape stll attached to the wires laying on the
> roof so in my humble opinion the tape is for shipping only and is not to be
> used as a wire management system.
>
> Jerry
>
> NABCEP PV Inspector
>
>
>
> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Hi All,
>
>
>
> I just got some of the Qcell 360w AC modules that have the Enphase
> microinverter factory applied to the back. The module is the half cut cell
> type with the DC leads coming from either side of the middle of the module.
> The modules come with the wires taped to the back of the module. If you
> remove that tape, there appears to be almost no way to properly manage
> those wires. Is that tape meant to just keep the wire on the back of the
> module forever? Would that even last more than a year? I am curious what
> other people have done for these if they have used them or something
> similar. Maybe if you get the rail in the right spot, the wires will just
> sit on the rail...
>
>
>
> I realize that we have had a thread on wire management with half cut cell
> modules before, but this is a little different, as I am specifically asking
> about that tape and if anyone knows if it holds up over time.
>
>
>
> Cheers,
>
> Dave
>
>
>
> --
>
> [image: Logo] <https://www.sungineersolar.com/>
>
>
> *Dave Tedeyan, P.E.Owner | Sungineer Solar*
>
> *p: *he | him | his
> *a: *1653 Slaterville Rd. | Ithaca, NY 14850
> *w:* www.sungineersolar.com <http://www.sungineersolar.com/>
> *c:* (607) 288-2898
>
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