1 Gang 3 Way Light Switch Wiring Diagram. If you are buying switches and don't know It is forbidden to wire a conventional switch within reach of a washbasin, bath or shower unit so you will. Three-way wall switches control a light fixture from two locations in a room.
You just need to overcome all those extra wires. Three-way switches often control one light fixture at both ends of a hallway. When you have two standard switches (non electronic) that control a light (one or more).
How to wire three switches in a You have the power supply white wire that leads back to the breaker panel and you have the three white wires that connect to the three fixtures.
The diagrams below show the various options.
Armed with a wiring diagram and the necessary tools, install the boxes that house the switches. The three-way switch is a variation of the standard single-pole switch, which controls a light only from one location. The switches are called three way, probably because they have three terminals on them.