Outstanding Three Switch Light Circuit

Here is a typical circuit in its four possible states.

Three switch light circuit. Use the 3 way switch wiring diagram to learn light switch wiring. This method is commonly used nowadays as it is efficient than the two wire control system. A 3 way switch is shown below.

The red and black wires running from sw1 to the outlet are used as. Notice that the wire connected to the com terminals is looped straight through the intermediate switch using a cable connector. All three switches are connected together by a three core and earth control cable.

The whole wiring a light switch project can be completed in a few hours if you don t have to do any drywall removal and repair. 3 way is the electrician s designation for a single pole double throw spdt switch. Here is our selection of three way light switch circuit diagrams.

This is where two switches control the same light or lights. This cable consists of three cores brown grey and black which are all line colours and an earth wire. In this diagram two 3 way switches control a wall receptacle outlet that may be used to control a lamp from two entrances to a room.

Connect the line brown wire coming from the light together with the 3 core earth cable black wire in to the l1 terminal of the two way switch. The usual practice in home construction is to use 3 way switches. Another dead giveaway of a three way switch is the absence of on and off markings.

With a pair of 3 way switches either switch can make or break the connection that completes the circuit to the light. The circuit consists of a two way switch at each end top and bottom switches in fig 2 and an intermediate switch in the middle. All of the additional switches are internediate types 4 terminals and connect into the middle of the circuit in exactly the same way.