Intermediate switch wiring diagram new cable colours the 3 gang intermediate light switch is used where three or more switches control one light and used in conjunction with two two way light switches to achieve this. Because youre using t e there is no need to connect between the commons.

3 Way Switch Variations
Wiring a 3 gang switch. Sketch it out as if youre 3 plating at the light fittings using t e and with three switch drops. Wiring the hot wires step 1 connect a black or hot wire from each of the three fixtures to the top screw on the right side of each switch. Or these terminals can be ignored for non backlit switch banks. I wired that switch with black wire as common red traveler wire attached on same side of switch as common wire. How to wire a 3 gang receptacle box step 1. White wire att read more.
Push the four white wires into the back of the gang box. Triple gang switch face. Cut two 6 inch lengths of black and two 6 inch lengths of white insulated copper wire using the diagonal pliers. Your 3g switch is no different from 3 individual 1gs. Matt the best thing you can do is draw yourself a diagram mate. Its likely youll also need to replace the existing switch box with a larger one to accommodate the extra wires for the 3 way switch.
It is effectively three single gang intermediate switches on one face plate. 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 fixtures. I am attempting to replace 2 3 way switches. Thanks for watching like share. Three wire cable is supplying the source for the switches and the black and red wires are each connected to one switch. Using the needle nose pliers make loops in the stripped ends of these conductors.
Feed a length of 14 3 type nm cable or 12 3 if youre connecting to 12 gauge wire between the two boxes. When wiring this switch you can choose if youd like to illuminate it because of the independent lamp attached to terminals 8 and 7. 1 switch is the end switch. Using the white wires. The wiring diagram to the right will show how to wire and power this 12v 20amp on off on 3 way carling contura rocker switch.