Article 410 Luminaires, Lampholders, and Lamps
410.71 Disconnecting Means for Fluorescent or LED Luminaires that Utilize Double-Ended Lamps.
(1) General. In indoor locations other than dwellings and associated accessory structures, fluorescent or LED luminaires that utilize double-ended lamps and contain ballast(s) or LED driver(s) that can be serviced in place shall have a disconnecting means either internal or external to each luminaire. For existing installed luminaires without disconnecting means, at the time a ballast or LED driver is added or replaced a disconnecting means shall be installed. The line side terminals of the disconnecting means shall be guarded.
Exception No. 1: A disconnecting means shall not be required for luminaires installed in hazardous (classified) location(s).
Exception No. 2: A disconnecting means shall not be required for luminaires that provide emergency illumination required in 700.16.
Exception No. 3: For cord-and-plug-connected luminaires, an accessible separable connector or an accessible plug and receptacle shall be permitted to serve as the disconnecting means.
Exception No. 4: Disconnecting means shall not be required for every luminaire in a building area if all of the following conditions apply:
(1) More than one luminaire is installed in the building area
(2) The luminaires are not connected to a multiwire branch circuit
(3) The design of the installation includes disconnecting means
(4) The building area will not be left in total darkness should only one disconnect be opened
(2) Multiwire Branch Circuits. When connected to multiwire branch circuits, the disconnecting means shall simultaneously break all the supply conductors to the ballast, including the grounded conductor.
(3) Location. The disconnecting means shall be located so as to be accessible to qualified persons before servicing or maintaining the ballast. Where the disconnecting means is external to the luminaire, it shall be a single device, and it shall be attached to the luminaire or the luminaire shall be located within sight of the disconnecting means.

Material taken from the National Electric Code. is reprinted with permission from NFPA 70., 2023 edition. National Electrical Code®, Copyright 2022, National Fire Protection Association, Quincy, MA. All rights reserved.