Yes, according to the National Electrical Code (NEC) and modern electrical safety standards, grounding a light switch is strictly required for all residential wiring installations unless the switch is explicitly double-insulated and housed in a non-conductive box. Grounding ensures that if an internal wire becomes loose and touches the metal switch yoke or metal electrical box, the fault current is safely diverted down the bare copper or green grounding wire to earth ground rather than shocking a user who touches the toggle switch. Always shut off the main circuit breaker before touching electrical wiring. You can verify compliance by checking local electrical codes.
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