NEMA reaffirmed ANSI C78.390-2006 American National Standard for Electric Lamps—Method of Designation for Electric Lamps—Miniature and Sealed-Beam Incandescent Lamps. Developed by the Accredited Standards Committee for Electric Lamps, standard describes voluntary system for method of designation of miniature and sealed-beam lamps. Method is intended to provide lamp manufacturers a means to request a designation.