4 Wire Switch To 3 Wire Box. This configuration is used most often for large lighting arrays. For the exterior light indoor switch box with 4 light switches.
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This equipment grounding conductor is the missing wire in the older 3 wire configurations. Connect the last switch in the usual manner looping the wire around the screw in a clockwise direction. 3 way switch light inbetween the two switches.
Connecting a 4 wire and a 3 wire circuit at a junction box is used to connect two 120 volt circuits to one 240 volt line.
There was a second 14 3 wire that ran into that box from another 2 gang box. This equipment grounding conductor is the missing wire in the older 3 wire configurations. How to wire 3 light switches in one box diagram triple switch intended for how to wire 3 light switches in one box diagram image size 951 x 603 px and to view image details please click the image. The 4th wire in that cord and plug configuration is an equipment grounding conductor.
