A school with a roof top generator and a generator control room on the top floor and another school with a roof top generator and the control room in the basement. The generators power the exit signs and means of egress emergency lighting. Both rooms have battery operated emergency lighting in the generator control rooms. The room only has one unmarked exit and is not part of a means of egress pathway. I am trying to determine if the battery operated emergency lighting is required. These are not boiler, incinerator or furnace rooms that require 2 exits, just small 12 x 12 rooms off of the main school hallway or in the basement off of a maintence hallway. Both hallways have marked exits and generator powered emergency lighting. I have looked through the IFC and some older BOCA codes. My question is, does anyone know of any requirements for battery operated emergency lighting in generator control rooms?