14.__High-intensity discharge lamp.__"High-intensity discharge lamp" means a lamp in which light is produced by the passage of an electric current through a vapor or gas and in which the light-producing arc is stabilized by bulb wall temperature and the arc tube has a bulb wall loading in excess of 3 watts per square centimeter.

15.__Illuminated exit sign.__"Illuminated exit sign" means an internally illuminated sign that is designed to be permanently fixed in place to identify a building exit and consists of an electrically powered integral light source that illuminates the legend "EXIT" and any directional indicators and provides contrast between the legend, any directional indicators and the background.

16.__Large packaged air-conditioning equipment.__"Large packaged air-conditioning equipment" means electrically operated, air-cooled air-conditioning and air-conditioning heat pump equipment that has a cooling capacity of at least 240,000 BTUs per hour but less than 760,000 BTUs per hour and that is built as a package and shipped as a whole to end-user sites.

17.__Low-voltage dry-type distribution transformer.__"Low- voltage dry-type distribution transformer" means a distribution transformer that:

A.__Has an input voltage of 600 volts or less;

B.__Is air-cooled;

C.__Does not use oil as a coolant; and

D.__Is rated for operation at a frequency of 60 hertz.

18.__Medium-voltage dry-type distribution transformer.__ "Medium-voltage dry-type distribution transformer" means a distribution transformer that:

A.__Has an input voltage of more than 600 volts but less than 34,500 volts;

B.__Is air-cooled;

C.__Does not use oil as a coolant; and

D.__Is rated for operation at a frequency of 60 hertz.