Per some of my other posts, doing a remodel and finishing part of the basement with sheetrock walls and ceiling. The walls get a 1-1/2" foam insulation board attached to the concrete walls, covered in drywall. The foam manufacturer shows to drop loose NMB and then cut a channel in the foam and pinch it between the concrete wall and foam. That sounds like a safety issue and probably not going to fly with inspection. I want to run conduit between J boxes screwed to the concrete and notch the foam around it. But... There are three wooden partition walls that have some outlets that will be on circuits that transition to the concrete walls. I run NMB horizontally through the wood studs, daisy-chaining the outlets. In some places, it will go up into the ceiling joists and then drop down vertically to the J boxes. It seems that to run conduit I need loose THHN in the conduit, not NMB. There is NMB in the ceiling and wood walls, if I put a box to transition from NMB to THHN, that would be buried in the walls and ceiling - no good. So how do I connect the circuit between wood and concrete walls utilizing conduit on the concrete? Thanks guys. [ATTACH]78845[/ATTACH]

If it has no actual splice, can you do it? I'm splitting my house into two units, and all of the wiring is in conduit - most of which is set in concrete. There are several junction boxes in the basement ceiling and walls for lights and receptacles. I completely rewired the house a couple years ago so I know exactly how the conduit is laid out. I am installing new service with a double meter pan, and a new breaker panel outside for the first floor (currently in the basement, needs to be accessible to the tenant). I am going to use the existing conduit for the first floor circuits and install a large junction where the current breaker box is to extend the circuits to the new box. The basement will be framed and wired with Romex and new devices to a new indoor panel. None of the actual basement wiring will go through the conduit. If I simply run the wiring THROUGH the existing junction boxes uninterrupted, can I cover them and bury them in the ceilings/walls or do I still have to have access panels?