outlet or busway.
(2) The flexible cord meets all the following:
a. Is visible for its entire length outside the luminaire
b. Is not subject to strain or physical damage
c. Is terminated in a grounding-type attachment plug
cap or busway plug, or is a part of a listed assembly
incorporating a manufactured wiring system con nector in accordance with 604.6(C), or has a lumi naire assembly with a strain relief and canopy hav
ing a maximum 152 mm (6 in.) long section of raceway for attachment to an outlet box above a suspended ceiling
(2) Provided with Mogul-Base, Screw Shell Lamphold- ers. Electric-discharge luminaires provided with mogul- base, screw shell lampholders shall be permitted to be connected to branch circuits of 50 amperes or less by cords complying with 240.5. Receptacles and attachment plugs shall be permitted to be of a lower ampere rating than the branch circuit but not less than
125 percent of the luminaire full-load current.
(3) Equipped with Flanged Surface Inlet Electric- discharge luminaires equipped with a flanged surface inlet shall be permitted to be supplied by cord pendants equipped with cord connectors. Inlets and connectors shall be permitted to be of a lower ampere rating than the branch circuit but not less than 125 percent of the luminaire load current.
410.64 Luminaires as Raceways. Luminaires shall not be used as a raceway for circuit conductors unless listed and marked for use as a raceway.
410.65 Wiring Supplying Luminaires Connected To- gether. Luminaires designed for end-to-end connection to form a continuous assembly, or luminaires connected together by recognized wiring methods, shall be permitted to contain the conductors of a 2-wire branch circuit, or one multiwire branch circuit, supplying the connected luminaires and need not be listed as a raceway. One additional 2-wire branch circuit
separately supplying one or more of the connected luminaires shall also be permitted.
FPN: See Article 100 for the definition of Multiwire
Branch Circuit.
410.68 Feeder and Branch-Circuit Conductors and Ballasts. Feeder and branch-circuit conductors within 75 mm (3 in.) of a ballast shall have an insulation temperature rating not lower than 90°C (194°F) unless supplying a luminaire marked as suitable for a different insulation temperature.
VII. Construction of Luminaires
410.70 Combustible Shades and Enclosures. Adequate airspace shall be provided between lamps and shades or other enclosures of combustible material.
410.74 Luminaire Rating.
(A) Marking. All luminaires shall be marked with the maximum lamp wattage or electrical rating, manufacturer's name, trademark, or other suitable means of identification. A luminaire requiring supply wire rated higher than 60°C (140°F) shall be marked with the minimum supply wire temperature rating on the luminaire and shipping carton or equivalent.
(B) Electrical Rating. The electrical rating shall include the voltage and frequency and shall indicate the current rating of the unit, including the ballast, transformer, or au-totransformer.
410.76 Design and Material. Luminaires shall be con- structed of metal, wood, or other material suitable for the application and shall be designed and assembled so as to secure requisite mechanical strength and rigidity. Wiring compartments, including their entrances, shall be