When you say "run down the same floor joist", I assume you mean running parallel to the joist, right? I don't think running boards or bored holes apply here... if they're running perpendicular to the floor joist, then Jim Port is correct.What is common practice or code when running new electrical lines in a home(15 amp/20 amp) in a basement that feed up to the 1st and 2nd floor of a home?
Is there a rule on how many wires can be run down the same floor joist overhead? In other words, If I need to run 10 new 15amp/20amp lines, can they bunched together and secured to the floor joist overheat safely, or is there a rule on how many can be together? And what is the rule if these wires need to cross a metal gas line?