The third wire (ground) on a light dimmer switch for a bedroom?

Question

The old switch has 2 wires on it. The new switch I am putting in is a dimmer style light switch. It has three wires on it. The third is a ground wire. There is no ground wire on the old switch. Do I need to worrie about the ground wire on the new switch?

Answer 1

If the third wire is green then it is a ground wire and should be hooked to the ground wire in the box.  If there is no ground wire in the box, then connect the wire to the box.  If none of the above, then use a wire nut to cap it off.  If you don't have a wire nut, then use electricians tape.

Be sure that you do not a 3-way dimmer switch.  They will have three wires also, plus the ground.

If you have any doubt, contact an electrician.

good luck with it.

Answer 2

just attach  it   to the box, this grounds the dimmer not the light..... lights don't   need to be grounded   hence the two wires in stead of three wires

Answer 3

Is there ground wire inside box, if yes connect together, if box is metal connect to box, if box is plastic cap off.