In every multiple dwelling a light or lights shall be kept burning by the
owner or person in charge of such building, in the public hall or corridor and
in the stair enclosure, every night from sunset to sunrise. Such light
shall produce at least 2 foot candle illumination over the entire area. In
case a multiple dwelling has a stair hall or enclosure which is not provided
with windows to light and illuminate the same, the provision for lighting in the
daytime shall be the same as is required for stair halls and corridors at night
in other multiple dwellings.