Three Wire Light Switch. Single pole switch with 3 black wires. The red and black are used for hot and the white neutral wire at the switch box allows for powering a timer remote control or other programmable switch.
First identify the wires that you will use. Of the three black wires only one of them is hot. Single pole switch with 3 black wires.
It is also usually black.
A 3 way switch makes it possible to turn the power on and off from more than one location. Because the electrical code as of the 2011 nec update requires a neutral wire in most new switch boxes a 3 wire cable runs between the light and switch. This is the wire that connects your switch to your light bulb or other load ie. The black hot wire connects to the far right switch s common terminal.
