§431.322. Definitions concerning metal halide lamp ballasts and fixtures.

Ballast efficiency means, in the case of a high intensity discharge fixture, the efficiency of a lamp and ballast combination, expressed as a percentage, and calculated in accordance with the following formula: Efficiency = Pout/Pin where:

Basic model means all units of a given type of covered product (or class thereof) manufactured by one manufacturer, having the same primary energy source, and which have essentially identical electrical, physical, and functional (or hydraulic) characteristics that affect energy consumption, energy efficiency, water consumption, or water efficiency, and are rated to operate a given lamp type and wattage.

Ceramic metal halide lamp means a metal halide lamp with an arc tube made of ceramic materials.

Electronic ballast means a device that uses semiconductors as the primary means to control lamp starting and operation.

General lighting application means lighting that provides an interior or exterior area with overall illumination.

High-frequency electronic metal halide ballast means an electronic ballast that operates a lamp at an output frequency of 1000 Hz or greater.

Metal halide ballast means a ballast used to start and operate metal halide lamps.

Metal halide lamp means a high intensity discharge lamp in which the major portion of the light is produced by radiation of metal halides and their products of dissociation, possibly in combination with metallic vapors.

Metal halide lamp fixture means a light fixture for general lighting application designed to be operated with a metal halide lamp and a ballast for a metal halide lamp.

Nonpulse-start electronic ballast means an electronic ballast with a starting method other than pulse-start.

Off mode means the condition in which an energy-using product:

Probe-start metal halide ballast means a ballast that starts a probe-start metal halide lamp that contains a third starting electrode (probe) in the arc tube, and does not generally contain an igniter but instead starts lamps with high ballast open circuit voltage.

Pulse-start metal halide ballast means an electronic or electromagnetic ballast that starts a pulse-start metal halide lamp with high voltage pulses, where lamps shall be started by the ballast first providing a high voltage pulse for ionization of the gas to produce a glow discharge and then power to sustain the discharge through the glow-to-arc transition.

Quartz metal halide lamp means a metal halide lamp with an arc tube made of quartz materials.

Reference lamp is a metal halide lamp that meets the operating conditions of a reference lamp as defined by ANSI C82.9-2016 (incorporated by reference; see § 431.323).

Standby mode means the condition in which an energy-using product: