Smart Old 3 Way Switch Common

If the white is correctly used for neutral the connected switching wires are red and black.

Old 3 way switch common. This is the wire that connects your switch to your light bulb or other load ie. A fan or other appliance. 3 way switches have three terminals one common usually black color and one pair of travelers usually brass color.

For example a long hallway or stairway might use a pair of three way switches at each end so that lights can be turned on when approaching one end of the hall or stairway then shut off from the other end. The common terminal is the bridge between the power supply and the load typically a light fixture. For those new to electrical work 3 way switches enable lights to be controlled from different locations.

It s a foolproof way for a proper. The black wire from the other 3 way gets connected to the line black wire. The pair of travelers on one switch connect to the pair of travelers on the other switch.

The common screw connects to the load or hot wire depending where the switch is. At each switch in the above 3 way switch wiring diagram the black wire gets connected to the common copper or black screw. Conventional 3 way switch wiring configuration.

It is also usually black. In a 3 way configuration the line wire should be connected to the common terminal of the brilliant control. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture.

The white neutral is often referred to as common but the colored wires are both used as hot wires alternately as the possible switch positions are made. 3 way switch wiring diagram depicting all wires in the ceiling junction box. The line white neutral wire gets connected to the light fixture.