// CODE SNIPPET
JUMP TO FULL CODE CHAPTER
Dimmers shall comply with 520.25(A) through (C).
Where dimmers are installed in ungrounded conductors, each dimmer shall have overcurrent protection not greater than 125 percent of the dimmer rating and shall be disconnected from all ungrounded conductors when the master or individual switch or circuit breaker supplying such dimmer is in the open position.
The circuit supplying a solid-state dimmer shall not exceed 150 volts between conductors unless the dimmer is listed specifically for higher voltage operation. Where a grounded conductor supplies a dimmer, it shall be common to the input and output circuits. Dimmer chassis shall be connected to the equipment grounding conductor.
Related Code Sections
520.25 Special Occupancies, Dimmers
Dimmers shall comply with 520.25(A) through (C ...
National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 520 Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations > 520.25 Dimmers
(E) Equipment for General Use, Dimmer and Electronic Control Switches
General-use dimmer switches shall be used only to control permanently installed incandescent luminaires unless listed for the control of other loads ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 404 Switches > 404.14 Rating and Use of Switches > (E) Dimmer and Electronic Control Switches
700.23 Special Conditions, Dimmer and Relay Systems. A
dimmer or relay system containing more than one dimmer or relay and listed for use in emergency systems shall be permitted to be used as a control ...
National Electrical Code 2020 of Minnesota > 7 Special Conditions > 700 Emergency Systems > 700.23 Dimmer and Relay Systems. A
(B) Equipment for General Use, Grounding
Snap switches, dimmers, and control switches shall be connected to an equipment grounding conductor and shall provide a means to connect metal ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 404 Switches > 404.9 General-Use Snap Switches, Dimmers, and Control Switches > (B) Grounding