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
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