We are doing a reconstruction job for a fire damaged single family residence. It is circa 1900 and has 3 levels (plus basement). We subbed out the electrical rough-in and the electrician saying that by code we need 5 lights down the second floor corridor and 1 at the top of the stairs at the landing. The entire house is only 2500 square feet and this corridor may be 30 feet long. I cannot find a reference to this situation in the NEC. Does someone know the code requirement for this situation?