[6.5.4.1.1] An electric-discharge lamp whose mode of operation is that of a glow discharge in mercury vapor wherein an internal fluorescing coating (phosphor) transforms ultraviolet energy from the positive column into light.

Notes:

(i) Approbation bodies in North America limit the operating current for cold cathode lamps to between 120 mA and 240 mA in specific applications.

(ii) The fluorescent cold-cathode type of lamp with a diameter greater than 20 mm is commonly used for architectural and general lighting applications, but through popular usage is commonly referred to as a cold-cathode lamp.

(iii) Discharge lamps used in signage and related applications may be either of the cold cathode or of the fluorescent cold-cathode type. Through popular usage, signage lamps that are less than 20 mm in diameter are frequently referred to as neon lamps.

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