Conduit and masonry ceiling
I am rewiring the lighting in a part of my basement which was an addition to the house and has a masonry ceiling. It seems as if they laid conduit in the masonry, but it is impossible to find the opening without some serious demolition I am not willing to do.
As an alternative, I would like to run some conduit along the surface of the ceiling. I have never worked with conduit before. I would be running nmd90 romex, so this would be just for mechanical protection. I will use fluorescent fixtures with integrated junction boxes to make the connections.
Any suggestions on type of conduit, what is required for entrance/exit of the cable into the conduit, etc? Sorry for such a broad question... just looking for a place to start.