NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings

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NFPA 13D, Code

NFPA 13D/13R Handbook

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2016 NFPA 13D Current Edition & Handbook

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Sample (NEC® 2014)

411.2411.3 Definition. Low-Voltage Lighting Systems.


(A) General. Lighting Ssystems Ooperating at 30 Volts- volts or  Less. A lighting system consisting less shall consist of an isolating power supply, the low-voltage luminaires, and associated equipment that are all identified for the use. The output circuits of the power supply are shall be rated for not more than 25 amperes and  operate at 30 volts (42.4 volts peak) or lessmaximum under all load conditions.


(B) Class 2. Listed Class 2 lighting equipment shall be rated in conformance with Chapter 9, Table 11(A) or Table 11(B).


411.3411.4 Listing Required. Lighting systems operating at 30 volts or less shall comply with 411.3(A)411.4(A) or 

411.3(B).411.4(B). Class 2 power sources and lighting equipment connected to Class 2 power sources shall be llisted.