August, That's exactly what we have been hit with before. I just got good news a few minutes ago that one major jurisdiction here made the exception to allow Romex into a Soladeck, and they will even consider Romex in a short piece of conduit to a roof mounted PVC box. In fact, the person I spoke to cited the outdoor electrical outlets as a prime example of where Romex is traditionally allowed into the back of a box in a wet location.
Logic prevails! Jason On Tue, Jul 26, 2016 at 2:56 PM, August Goers <[email protected]> wrote: > Hi Jason, > > > > We’re in a territory where we can’t run Romex (NM) directly into Soladecks > because of the wet location issue. I actually think inspectors are easing > up on enforcing this particular code grey area, but nonetheless we haven’t > run NM directly into Soladecks. I imagine that using a regular NM cable > clamp connector would work. > > > > When we do run NM, we terminate it in indoors in a permanently accessible > box typically located in the attic or on the ceiling or wall by the roof > penetration location. Then, we run EMT through the roof and to our rooftop > J-box. THWN-2 is run between these two boxes. Then, the microinverter (or > ACPV) wire is spliced to the THWN-2 at the rooftop J-box. Yes, this means > three wire types for each install! We’re using splice cap crimp connectors > for all of our splices which we’re very happy with: > http://www.idealindustries.ca/products/wire_termination/terminals_crimps/crimp_connector_splice_cap.php > - ferrules are available for fine stranded conductors. > > > > August > > > > *From:* RE-wrenches [mailto:[email protected]] *On > Behalf Of *Jason Szumlanski > *Sent:* Tuesday, July 26, 2016 9:08 AM > *To:* RE-wrenches > *Subject:* [RE-wrenches] New Construction Enphase Romex / NM > > > > It seems like most jurisdictions are now allowing a transition to Romex in > a Soladeck box where the Romex enters the attic immediately and runs in > protected space all the way back to a load-side interconnection or combiner > panel. Two issues: > > > > - How are you bringing the Romex into the back of the Soladeck? > Standard metallic strain relief or strain relief with rubber compression > gasket or other means? > - Assuming you can't use a Soladeck due to the roof type and are using > a standard PVC roof junction box mounted to a rail with conduit to get into > the attic, are you transitioning from Enphase cable to THWN-2 in the j-box, > then installing a PVC or metallic pass-through box in the attic to > transition to Romex? Even though it's a short distance from the j-box to > the point where the conduit penetrates the roof plane, it's still a wet > location so Romex isn't allowed. In fact, some jurisdictions are requiring > this even for Soladeck boxes because they consider the Soladeck an > enclosure in a wet location so the inside must also be considered a wet > location, making the transition to Romex improper in their opinion. > > > > > > Jason Szumlanski > > Florida Solar Design Group > > > > > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > >
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