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 < [email protected]> wrote: > Tape is not approved as a wire retaining device as far as I can find in > the NEC :-] > > > > > > Dana Orzel - E - [email protected] - C - 208.721.7003 > > > > *From:* RE-wrenches <[email protected]> *On > Behalf Of *Jerry Shafer via RE-wrenches > *Sent:* Thursday, June 2, 2022 9:40 AM > *To:* RE-wrenches <[email protected]> > *Cc:* Jerry Shafer <[email protected]> > *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 < > [email protected]> 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 > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
