§ 151.17  MINIMUM STANDARDS FOR LIGHT, VENTILATION, AND HEATING.
   (A)   Every habitable room shall have at least one window or skylight facing directly to the outdoors.  The minimum total window space (area), measured between stops, for every habitable dwelling room shall be 10% of the floor area of the room.  Whenever walls or other portions of structures face a window of any room, and the light- obstructing structures are located less than three feet from the window and extend to a level above that of the ceiling of the room, the window shall not be deemed to face directly to the outdoors and shall not be included as contributing to the required minimum total window area. Whenever the only window in a room is a skylight-type window in the top of the room, the total window area of the skylight shall equal at least 15% of the total floor area of the room.
   (B)   Every habitable room shall have one window or skylight that can easily be opened, or such other device as will adequately ventilate the room.  The total openable window in every habitable room shall be equal to at least 45% of the minimum window area size and minimum skylight-type window size, as required in this chapter, except where there is supplied some other device affording adequate ventilation and approved by the Building Inspector
   (C)   Every bathroom and water closet compartment shall comply with the light and ventilation requirements for habitable rooms contained in divisions (A) and (B) above, except that no window or skylight shall be required where the bathroom and water closet compartments are equipped with a ventilation system which provides ventilation equivalent to that in (B) above.
   (D)   Where there is electric service available from power lines, which are not more than 300 feet away from a dwelling, every habitable room of the dwelling shall contain at least two separate floor- or wall-type electric outlets, or one such convenient outlet and one supplied ceiling-type electric light fixture, and every water compartment, bathroom, laundry room, furnace room and public hall shall contain at least one supplied ceiling- or wall-type electric light fixture.  Every outlet shall be properly installed, shall be maintained in good and safe working condition, and shall be connected to the source of electric power in a safe manner.
   (E)   Every dwelling shall have heating facilities which are installed and maintained in accordance with the Kentucky Revised Standards of Safety, and are capable of safely and adequately heating all habitable rooms, bathrooms, and water closet compartments in every dwelling unit located therein to a temperature of at least 70° F. at a distance of three feet above floor level, when the outside temperature is 0° F.  Fuel-burning space heaters located in sleeping rooms or rooms generally kept closed shall be connected up to a suitable chimney, flue, or gas vent.  There shall be supplied an adequate air supply for combustion through one or more openings to the outside, or by means of fixed openings to interior spaces which open to the exterior.
('76 Code, § 210.11(D))  Penalty, see § 151.99