Light Switch Replacement
We replaced the light switches in the dining room for cosmetic reasons(previous owners had pink switch with a zebra print plate). Everything is fine, but a co-worker said something that is bothering me. He asked if we had problems attaching the copper wire to the new switch.
I told him we only had three wires inside the box and when we pulled out the old switch nothing was attached to the green screw. He proceeded to tell me that all light switches have a copper/ground wire and if we don't it's a big fire hazard. I have been reading online and it seems this is not a requirement for older homes. I'm kinda freaking out and was hoping you would have an answer for me.
The light switches are 3 way and had 3 wires to connect.