Shock, and all,
NEC 334.15(C) In Unfinished Basements. Where cable is run at angles with joist in ubfinished basements , ...2 #6 or 3 #8 directly to lower edge....
Smaller cables SHALL be run either through bored holes in joist or on running boards.
Below the joist NM cable is a violation.
It isn't just support but, protection. People used to use the wires as clothes line and hang wet clothes from wire hangers from the conductors. A real treat when they had K&T wiring. [Linked Image]
Alan--

Alan--
If it was easy, anyone could do it.