Wrenches. Conduit issue, If it is Unprotected then you need sch 80 but as it is going through concrete weed trimming is not really an issue, that is in my JHD anyway.
On Wed, May 20, 2026, 3:42 PM Chris Sparadeo via RE-wrenches < [email protected]> wrote: > Not sure your exact situation, but a 230.6 argument could potentially be > made, as this exemption is often applied to “other than service > conductors”. Installed under min 2” of concrete can be considered “outside > of the building”. > > > On Wed, May 20, 2026 at 2:05 PM William Miller via RE-wrenches < > [email protected]> wrote: > >> I had a similar problem with PVC pre-installed through a roof. It was big >> enough pipe to run flex through and pull our PV runs. >> >> As to the requirement to use metallic, I haven’t had my second cup of >> coffee yet so I won’t comment. >> >> William Miller >> Miller Solar.com >> 805-438-5600 >> www.millersolar.com >> >> On Wed, May 20, 2026 at 10:36 AM Mick Abraham via RE-wrenches < >> [email protected]> wrote: >> >>> Hi, Mechanics ~ >>> >>> The general contractor put in a 2" PVC pipe before pouring the slab. The >>> pipe has a 90 degree sweep so there's a vertical pipe stub. >>> He thought there would be no code inspections for this remote >>> property... oops. >>> >>> I now must use this plastic pipe for incoming PV wires. These wires will >>> terminate on a MidNite Power MN15‑12KW‑AIO, so question one: >>> Without embarrassing myself, can I argue that this qualifies for the >>> exemption as a PV ICS (Photovoltaic Integrated Control System)? >>> The PV arrays will be on top of an open horse shed, so I don't plan on >>> any form of "rapid shutdown". >>> >>> Assuming that the above exemption won't get me off the hook, what are >>> your suggestions for retrofit? My five wires could comfortably fit 1" trade >>> size EMT >>> conduit. If I cut the PVC stub then glue on a male adapter (so I could >>> mount a metal box low to the floor), there's still some unprotected plastic >>> due to the hub of the male adapter. >>> >>> Also: what would have been better initial tradecraft in a non-retrofit >>> slab situation, assuming that one wants to use PVC for most of the pipe run >>> while still satisfying >>> NEC 690.31(D) (1)? >>> >>> Thanks in advance, Mechanix. "The Wrench List is the Bomb!" >>> >>> Mick Abraham, Proprietor >>> www.abrahamsolar.com >>> >>> Cell phone or for text messaging: 970-946-6584 >>> _______________________________________________ >>> 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 > >
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