He did say also, if running through my basement ceiling,
the holes in the joists must be a mininum of 1 1/2 inches
from the bottom.

As an aside, the other issue here is that the closer to the
bottom of a beam or joist you put the hole, the more it is
weakenned, since that's where there's the most tension.
If you put the holes through the center of the joist, it has
the least effect on the structure...

--Glenn Lyford