Web the green screw attached to the metal strap of the switch is always for the ground wire (this is the bare copper or green insulated wire within the circuit ). Turn off the correct circuit at your electrical panel. Best of all, they are easy to install.
How to Wire a 3Way Switch Wiring Diagram Dengarden
They also have three terminal.
National Electrical Code Rules When Wiring Any.
Web the common two traveller terminals ground or earth terminal. Web how to wire 3 way light switch, in this video we explain how three way switching works to connect a light fitting which is controlled with two light switches.
