Grounding Provisions for General-Use Snap Switches

Snap switches are considered to be part of the effective ground-fault current path when ______.

a) the switch is connected to the intersystem bonding termination
b) the switch is mounted with metal screws to a metal box or a metal cover that’s connected to an equipment grounding conductor
c) an equipment grounding conductor or equipment bonding jumper is connected to the equipment grounding termination of the snap switch
d) b or c

See answer and applicable Code reference

The correct answer is: d) b or c

The provisions for general-use snap switches are outlined in Sec. 404.9 of the 2014 NEC. As noted in Sections 404.9(B)(1) and (2), "Snap switch shall be considered to be part of an effective ground-fault current path if either of the following conditions is met:
1) The switch is mounted with metal screws to a metal box or metal cover that is connected to an equipment grounding conductor or to a nonmetallic box with integral means for connecting to an equipment grounding conductor.
2) An equipment grounding conductor or equipment bonding jumper is connected to an equipment grounding termination of the snap switch."

 

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