I light is sufficient to light the stairs. As long as there is one at the top and one at the bottom then 2 sp switches would be compliant. Now you would probably never get another job if you wired the lighting that way. I could see that perhaps in some old remodels this could be beneficial
How could two regular snap switches be wired to control a single light (one bulb)? I can your point and Derek's....
Let's make the stairwell bigger: Steps start in finished basement and go to the 3rd floor, with landings inbetween floors, eight steps between floor and landing. So, there is the basement floor, basement landing, first floor and landing, second floor and landing, and the third floor. I would need four switches, one in the basement, first, second and third floors, correct? A light at each landing, for 3 lights, or a light on each floor for 4 lights. Again, how could this be wired to
not use 3/4 way switches or automatic switches?
The code section does not require 3-way switches, that I agree--what are the realistic options? Would my 4 story stairwell with 4 lights and 4 spst switches, each controlling one light each, still be code acceptable? If so, what if I'm on the third floor, and the kids turn off the light to the second floor? I'd be walking in near darkness from the third/second floor landing to the second floor.