A portion of our house sits on unfinished 36" crawl space. I need to run some electrical cable (NM/Romex, 14/2) through the middle of the crawl space, perpendicular to the joists. I could drill holes through all 14 joists, or... can I just staple the cable to the 6x6 beam that runs down the center of the crawl space, perpendicular to the joists, right where I want the cable to go? This seems like the 1) easiest and 2) most secure way of doing things. I know the code allows me to use a running board instead of holes in the joists, but it would be great if I can just use the center beam as a pre-installed (and very, very secure) running board.