[Wayne604]

Can anyone tell me, how should light switches be grounded in plastic boxes, what I mean is, does the plastic box have to be grounded? or can the switch be grounded alone? As it applies to cec.

 

[RandyM]

In the USA the strap of the switch has a grounding screw to attach the equipment grounds to. Use the same method you use for a receptacle.

 

[Robert Thompson 6971]

All the ground wires should be tied together and a ground wire going to each ground screw on the switches. Unless it's a metal box it does not have to be grounded.....plastic is not conductive....

 

[Vintage Sounds]

A Canadian plastic box has a metal bonding strap and typically two bonding screws. This is so you can avoid bonding every switch, which IMO is stupid.