I'm trying to understand 334.15 Exposed Work:
"Where cable is run at angles with joists in unfinished basements and crawl spaces, it shall be permissible to secure cables not smaller than two 6 AWG or three 8 AWG conductors directly to the lower edges of the joists. Smaller cables shall be run either through bored holes in joists or on running boards".
- When they say smaller do they mean in diameter or by gauge number? I want to run 6/3 with ground NM on the ceiling of an unfinished basement.
- Are they also saying that I can run 6/3 perpendicular to the joists attached to their underside without running boards?