The electrical source is at the first 3 way switch and the hot wire connects to the common there. A 4 way switch has 4 terminals or poles.

How To Wire A Multiple Gang Switch Box Rough In
How to wire a 4 gang light switch. Three wire cable is supplying the source for the switches and the black and red wires are each connected to one switch. How to wire three switches in a gang box seems a bit daunting just looking at it. When the switch is operated current will either travel straight through or crisscross. In this basic 4 way light circuit 3 wire cable runs between all the switches and 2 wire cable runs from the last switch to the light. Way in switch gang in switch and sp dp pole difference in electrical switches duration. Two terminalpoles are labeled in and two are labeled out pairs of wires called travelers will connect to each side.
In this video i remove two 2 gang switch boxes and install a 4 gang switch box near a door in an unfinished basement. You have only one power supply wire and three different fixtures to be wired to that power supply. Your gang box looks like an octopus with wires emerging from it like the tentacles of the kraken that sank the black pearl. Wiring a 4 way switch with light at the end. All the grounds need to be connected together at the 4 gang box regardless of how many lighting circuits are there. If there is more than one circuit there needs to be a neutral conductor from each circuit in the 4 gang box.
The 2011 nec requires at least one neutral conductor at the 4 gang switch box if all four lights are on the same circuit. The engineering mindset 3366723 views. Study the 4 way switch and the manufacturers directions. The black wire from each light is connected to one of the switches and the source neutral and ground are shared by the two light. How to wire 2 way light switch duration. Careful wire management is a key component to the project.
This diagram shows two switches in the same box with a separate 120 volt source feeding each.