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 Circuit Diagram. 3 way and 4 way switch wiring diagrams. The black line wire connects to the common terminal of the first 3 way switch. 4 way switch wiring with light first.
Watch the 4 way switch video below and pay attention. This 4 way switch diagram 1 shows the power source starting at the left 3 way switch. Typical 4 way switch wiring nm cable. This diagram illustrates wiring for a 4 way circuit with the electrical source at the light fixture and the switches coming after.
Typical 4 way switch wiring nm cable.
At the risk of being repetitious make sure the power is off before making any connections to an existing circuit. In the diagrams below the first switch 3 way common terminal connects to line voltage. Rear view of an old four way switch with copper screw terminals on one side and brass screw terminals on. 4 way switch wiring diagrams national electrical code. 4 way switch wring diagram.
4 Way Switch Circuit Diagram. At the risk of being repetitious make sure the power is off before making any connections to an existing circuit. 4 way switch wiring diagrams national electrical code.