Light 3 Way Switch Internal Diagram. Usually the third wire passes the middle intermediate switch but is joined in a separate terminal block. Furthermore wiring diagram gives you the time frame during which the assignments are to be finished.
Three wires between the two end switches probably using 3 core and earth cable. The white wire of the cable. Three way switching 3 wires.
If you have any problems with these switches it.
Most likely to be found with wires in conduit. A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page. 3 way switch wiring diagrams from mrelectriciantv click on any of the switches to. Three wires between the two end switches probably using 3 core and earth cable.