NEC guidelines on grounding requirements for switches
When grounding a switch contained within a non-metallic box, what is an acceptable method for making the connection? The switch has a metal yoke.
A. A wiring method that provides an equipment grounding conductor.
B. A wiring method that includes an equipment grounding conductor.
C. A or B
D. An external bonding jumper to connect the switch yoke to any nearby grounding electrode or grounded surface.
Article 404 covers switches. As noted in the second paragraph of 404.12, "… a wiring method that provides or includes an equipment grounding conductor" is acceptable.
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at email@example.com.