I'm replacing knob-and-tube wiring, and plan to add blown-in attic insulation afterward. I figure it would be safer to run NM wire on the underside of the attic rafters than to bury it in insulation, where they might be stepped on or tripped over. I can't find anything in NEC 320.23 regarding rafters. Is this allowed?
Further, I figure junction boxes would be considered accessible on the rafters, since they won't be concealed under insulation. Is this allowed? Do all j-boxes in the attic need to be accessible through the ceiling?
The attic is accessible via access hole.