My electrician had to cut drywall on the back side of a wall that has a new electrical panel mounted. The back side is the kitchen (the panel is facing into the living room). The feeder and a bunch of existing circuits came from above. The electrician wanted to notch it out of a structural beam, but I didn't want that much damage to the beam.
See pictures below for what it looks like right now. I don't want to just put some drywall over here, because somebody in the future could screw into it and hit the 100A feeder or any of the other circuits. I'm thinking of putting a wood cover over the vertical wall piece, and some drywall to cover the ceiling. I figured if I leave the screws exposed it might be clear that this is an access panel with something behind it, and they shouldn't screw into it. I also thought about putting some sheet metal behind it, but I'm not sure how thick it would have to be to prevent nails and screws from penetrating it and hitting the wires.
Two questions: - what should I do for the vertical part of the wall - How can I make a good transition from the drywall in the ceiling to the vertical access door.