Two Switch One Light Wiring Diagram. If the second switch is in the off position then the light will be off it. When wiring switches this type of cable may be used as a switch legwhere you need two black wires to go from the switch to black wires located at the light or at an intermediate electrical box.
This wiring diagram shows both switches aligned together with the fixture at the end. One that closes the contacts and one that opens the contacts. The switch is on when the com terminal and l 1 terminals are connected and the switch is off when the com and l 2 terminals are connected.
Single pole light switch controls lights from one location.
The feed wire the hot wire coming from the service panel runs to the switch before it goes to the fixture. A three way switch is one that works in conjunction with another three way switch to power the same light. As it is three way switching wiring connection we have used two switches one is ordinary 3 way switch and the second one is 3 way pilot light switch. Say we are working on the light upstairs so we turn off the upstairs lighting circuit thinking we are safewrongthe live is picked up downstairs and there are still live conductors feeding the switch upstairs and if someone flipped the downstairs switch in this diagram that live feed would extend all the way to the lamp too.