Incandescent lamp means a lamp in which light is produced by a filament heated to incandescence by an electric current, including only the following:
(1) Any lamp (commonly referred to as lower wattage non-reflector general service lamps, including any tungsten halogen lamp) that has a rated wattage between 30 and 199, has an E26 medium screw base, has a rated voltage or voltage range that lies at least partially in the range of 115 and 130 volts, and is not a reflector lamp.
(2) Any incandescent reflector lamp.
(3) Any general service incandescent lamp (commonly referred to as a high-or higher-wattage lamp) that has a rated wattage above 199 (above 205 for a high wattage reflector lamp).
10 CFR § 430.2
For purposes of this part, words shall be defined as provided for in section 321 of the Act and as follows -