When drilling your wire ways in the walls, what is the standard height in the horizontal height from the floor?
There are no standard heights. We usually run them close to the height that the receptacles are to save wire many of the homes I have wired run from 8” to 24” with most 12-16” I like the taller ones because boring the holes through the studs is easier a little higher, just make you bore your hole in the center of the board so there is 1-1/4” or more to the edge or you will have to add nail plates.