DIYbanter - View Single Post - Attic wiring-Adding flooring

Ed Pawlowski

On 5/31/2014 10:03 AM, wrote:
Is it OK to drill round holes in the flooring where house wiring crosses the joists so that there is no pressure on the wires at those points?
Between the joists the wires would be pushed slightly below the flooring.
Thank you for advice.

NO. cutting a notch or drilling a hole like that will weaker the
structure. Holes should be drilled through as close to the center as
possible.

If you have 2 x 8 beams and cut a 2" groove, you now have about the
strength of a 2 x 6. I think you'll find that a code violation too.