I need to put an outlet in an existing interior wall. I can get to the top plate of the wall from the attic, and I can connect to the supply for the other outlets in the room from there too.
My question is if it's ok to just drop the wire through the empty space and into the new outlet box. I.e. the wire would just be dangling, and not fastened to the stud.
Can I use regular romex, or do I need armored wire?