I want to mount a 3r pull box over several odd angled, closely bundled metal conduits protruding from a concrete exterior wall as this would be the most esthetically pleasing method of hiding the mess. 300.10 and 250.97 are applicable and mechanical,metallic and electrical connections are required. I'm thinking.....
Mechanical = concrete and screws
Metallic and electrical = ground bushing(listed fitting)
I'm wondering if the UL listing on the box be voided. Caulking would be used around the top and sides of the box. What are your thoughts on this?