We are having our house built. I plan to do the low voltage wiring (coax + cat6 for now).
The house is 2 story with attic and basement, though the attic height will be very limited.
I plan to run 1-1/4" conduit to all outlets. This is because it is the largest size hole I can put through the load bearing 2x4 stud walls and stay to code.
First floor conduit it easy. I'll make stub-outs to the basement then run the wires to the equipment room.
I'm looking for advice on how to run conduit for the second floor. I see these possibilities. Perhaps there are others.
- 2-3" conduit from attic to basement. Outlet conduit stub-outs in attic, run wires in attic to main conduit.
- 2-3" conduit from 2nd story closet to basement. Outlet conduit runs to the closet. I can pull wire to there then feed through main conduit.
- Each outlet conduit runs in floor joists to nearest first floor wall then directly to basement.
I really dislike (1). I retrofitted my previous home like this and really hated working in the attic. Plus, the attic height will be very, very limited in the new home.
I don't like (2) as much as I have to take a little room from a closet to access the conduits. But this may work better than option (3).
Option (3) would require conduit runs up to 25 feet with up to 270 degrees in bends.
Regardless of the above I'll be running an extra 2-3" conduit basement to attic for the future, as well as a second conduit some distance away for potential future electrical runs.
Any suggestions or tips would be greatly appreciated. Thanks!