I need to add a couple of electrical circuits that will run across the floor joists of an attic. The attic is accessible, but it has a low ceiling height, so the attic is not (and never will be) a usable living space. There is no floor in the attic space -- just the open joists which are the ceiling joists for the rooms below.
Since the new circuits will be running across (perpendicular to) the open joists, is it okay to just run a nailing board across the top of the joists and staple the new wiring on top of the nailing board? That would be a lot easier to do than drilling through the joists and running the wires through the drilled holes.
Is the nailing board approach okay according to the NEC requirements?