A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices.
4 Way Switch Terminals. Four way switches are used in combination with three way switches. Four way switches are used to control lighting from three or more locations. Each set of terminals is one of the toggle positions.
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4 way switches can be quickly identified by the 4 screw terminals in addition to the green gnd screw terminal. A 4 way switch has four terminals do not confuse with and purchase a 2 pole switch by mistake. Wiring connections to the 4 way switch screw terminals identify the electrical circuit and turn the source power or circuit breaker off. Label the circuit to advise others that work is being done on the circuit.
Four way switches are used to control lighting from three or more locations.
If more than three switches are needed simply place more 4 way switches between the three way switches. Four way switches are used to control power to a light from three or more different locations. There are four terminals that provide two sets of toggle positions on a four way switch. The 4 way terminals are labeled in and out two of each. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit.
4 Way Switch Terminals. You must purchase switches labeled as 4 way switches rather than 3 way or normal light switches. Wiring connections to the 4 way switch screw terminals identify the electrical circuit and turn the source power or circuit breaker off.
