1

Aside from what else has been said, the #1 practical priority is to staple the cables so that if cables are yanked on, the staples catch the force and it damages the cable there. You don't want it yanking it out of wherever it's connected, because that could cause all sorts of additional problems in places that are harder to access.


1

You can run NM cable (the official term for Romex, which is a brand name) in a crawl space either ALONG the SIDES of the floor joists, or THROUGH them (i.e. fed through drilled holes). But you cannot just staple it TO the bottom of the joists. Since that may not be an option here, the next choice is to nail small "runner" boards to the bottoms of the joists, ...


Only top voted, non community-wiki answers of a minimum length are eligible