The hot source is connected to the common terminal on the first switch sw1 and the hot terminal on the light fixture is spliced through all the light fixture to the common terminal of the last switch. In this scenario you will have a 142 wire coming from the light fixture into a three way switch.
4 Way Switch Installation Circuit Style 5
4 way switch power at 4 way. If the device is still. Turn on the light or device being controlled by the 3 way switches if you already have them. This circuit diagram shows wiring for a 4 way circuit with the power source at the light fixture and the switches following. Four way switches are used in combination with three way switches. Conventional 4 way switch wiring. A two wire cable c2 is run from the light to the first switch sw1 and a 3 wire cable runs between all the switches.
Return to location you plan to wire to verify that there is no electric flow to that device. Each set of terminals is one of the toggle positions. 4 way switch diagram options. As you will see most 4 way switch wiring is placed between the wiring of two 3 way switches therefore a 4way switch is installed with two 3way switches. Power from the light to the switches. 4 way switches have four terminals each with two pairs of travelers one set usually black and one set usually brass color.
4 way switch wiring 4 way switches provide switching from three or more locations. A 143 wire is then used to go to a four way switch. But if by common you mean the white wire or neutral do not connect it to the switch or you will get a direct short between the hot and the neutral. A four switch configuration will have two 3 way switches one on each end and two 4 way switches in the middle. Another 143 wire is used to connect another three way switch where the circuit will end. A 4 way switch could be used as a 2 way or onoff switch.
There are four terminals that provide two sets of toggle positions on a four way switch. Turn off electric power. Four way switches are used to control lighting from three or more locations. 4 way light switch with power feed via the light. Starting with safety and understanding 1. If more than three switches are needed simply place more 4 way switches between the three way switches.