I cannot find this specifically in code, so here is my question. When Romex is run across rafters in an open, unfinished attic it is my position that a raceway of some kind (1x3’s or even 2x4’s) should first be attached across the affected rafters, perhaps 3’ to 4’ above the joists, then the wiring be stapled to the raceway. This will protect the wiring from being accidentally snagged or otherwise damaged, especially along a long run across the attic.
I’ve noticed that some electricians do not use a raceway and simply staple the wiring to the underside of each rafter. I presume to save time and labor. Does NEC specifically address the issue of attaching Romex to rafters and how do inspectors normally handle this situation. Tks.