You can watch some important electronics videos. Three way or more switching.

How To Connect A 2 Way Switch With Circuit Diagram
Two way switch working. In this video we will discuss about two way switch connection. A two way light switch is a simple single pole changeover switch with three terminals. I can turn on the light from either location. 2 way switching two way switches. A 2 way switching connection means you can control an electrical equipment like bulb by two switches placed at different places generally used in the staircase. A typical application is that of being able to switch the hall and landing lights on.
Discussion in electrical forum discussion blog started by augusta jan 1 2010. I have a couple of two way switches that have been working fine for years. This means that at any time either switch may be upside down so that its on in the down position or off in the up position. When wiring a 2 way switch circuit all youre really doing is controlling the power flow switching offon to the load a light lamp outlet ceiling fan etc now a typical circuit will contain a 3 wire cable known as romex. Two way switch can be operated from any of the switch independently means whatever be the position of other switch onoff you can control the light with other switch. Black wire power or hot wire.
Normal switch has two states onoff. Logically it cant be done as both switches would need to be on for the circuit to work power the bulb that is but a two way switch system means that either switch should be able to turn on the bulb. A few days ago they started not working right. Turning a light on or off from either end of a flight of stairs. Two way switch has state1state2 single pole double throw ie spdt switch widely used application of two way switch is stair case lighting. 2 way switch not working right.
A two way light switch requires a three way cable three wires plus ground four conductors in all to be run in order for the light to be switched from any station. The cable consist of a black wire a white wire and a bare copper wire. How to work two way switch. This operation usually requires spdt switches and there may be several basic methods and systems of wiring in order to achieve this. Consider sw1 at l1 position sw2 at l1 lamp on sw2 at l2 lamp off. Use two 2 way switches to create a two way switch system.
The diagram describes the actual wiring of circuit. When i say 2 way swithces i mean a switch with two copper screws. Dec 4 2008 location. A two way switch is a switch which can help shift a load on or off from two different locations. Standard two way switching circuit.