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  • CHAPTER43
    CLASS 2 REMOTE-CONTROL,
    SIGNALING AND POWER-LIMITED CIRCUITS

    SECTIONE4301
    GENERAL

    E4301.1 Scope.

    This chapter contains requirements for power supplies and wiring methods associated with Class 2 remote-control, signaling, and power-limited circuits that are not an integral part of a device or appliance. Other classes of remote-control, signaling and power-limited conductors shall comply with Article 725 of NFPA 70. (725.1)

    E4301.2 Definitions.

    CLASS 2 CIRCUIT. That portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit considers safety from a fire initiation standpoint and provides acceptable protection from electric shock. (725.2)

    REMOTE-CONTROL CIRCUIT. Any electrical circuit that controls any other circuit through a relay or an equivalent device. (Article 100)

    SIGNALING CIRCUIT. Any electrical circuit that energizes signaling equipment. (Article 100)