I can't speak to longevity since it just came out, but EZ Solar just came out with a pretty interesting rail-mounted j-box option that clamps to the rails with hose clamps. It sounds strange at first, but in practice I found the samples to work very well.
Check out their JB-3 model. https://ezsolarproducts.com/jb-3/ <https://mailtrack.io/trace/link/4d59dfa6a10949790e994afe159cc0815d8d6dc0?url=https%3A%2F%2Fezsolarproducts.com%2Fjb-3%2F&userId=1613865&signature=569968a271fa537e> We have had good success with their JB-1 and JB-2 boxes for shingle and tile roofs, respectively. I can attest from lengthy experience in solar pool heating that stainless steel hose clamps hold up very well in pressure pipe applications on roofs. I can't see why they wouldn't work in this application. I wonder about the grounding of all metallic parts and if an inspector might ding you for the hose clamps, but I think that would be a stretch to cite that as a code violation or a safety issue. Jason Szumlanski Principal Solar Designer | Florida Solar Design Group NABCEP Certified Solar Professional (PVIP) Florida State Certified Solar Contractor CVC56956 On Wed, Jul 12, 2023 at 4:32 PM Rebecca Lundberg via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > What's currently your best long-lasting and safe solution/product(s) for > transitioning from PV wire to wire in conduit on a residential pitched > roof? The system I have in mind is on a 6/12 metal roof, in case that > matters. Thanks in advance! > > Rebecca Lundberg > _______________________________________________ > > >
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