CSA C22.2 NO. 184.1:15 (R2020)

Preface This is the harmonized CSA Group and UL Standard for Solid-State Dimming Controls. It is the second edition of CSA-C22.2 No. 184 and the second edition of UL 1472. This harmonized standard has been jointly revised on July 12, 2022. For this purpose, CSA Group and UL are issuing revision pages dated July 12, 2022. This harmonized Standard was prepared by a Task Force comprised of members representing CSA, UL, NEMA (National Electrical Manufacturers Association) and the EFC (Electro-Federation of Canada). This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Subcommittee on Integrated Committee on Wiring Devices, under the jurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic Steering Committee on requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope 1.1 These requirements cover permanently installed devices, hereafter referred to as dimmers, that employ a dimming function intended for control of lighting loads of the magnetic ballast, transformer, electronic ballast, self-ballasted lamp, tungsten-filament type, or light-emitting-diode (LED), and are intended to be installed in a wallbox or are provided with an enclosure for flush or surface mounting in accordance with the Canadian Electrical Code, Part iI (CE Code), and the National Electrical Code (NEC), ANSI/NFPA 70. 1.2 These requirements cover dimmers, other than touch dimmers, rated 600 volts ac or less, for installation on a 20-ampere or less branch circuit. 1.3 These requirements cover touch dimmers rated 120 volts ac or less for installation on a 20-ampere or less branch circuit. 1.4 These requirements cover dimmers, including touch dimmers, and electronic switches, having a minimum power rating of 300 watts incandescent or 300 volt-amperes in increments of 50 watts or 50 voltamperes. 1.5 Devices may have additional current ratings based upon the additional lighting loads as specified by the manufacturer. 1.6 A device incorporating other functions (for example, speed control) in addition to a dimming function is investigated on the basis of compliance with the applicable requirements for the dimming function in this Standard as well as requirements for the other functions in the applicable standards. 1.7 These requirements do not cover dimmers that use only a resistor or a transformer to perform the dimming function. 1.8 These requirements do not cover modular, cabinet or console type constructions. 1.9 These requirements do not cover dimmers intended primarily for use in theaters. Dimmers for use in theaters are covered by the Standard for Industrial Control Equipment, UL 508/CSA C22.2 No. 14.