Friday, 20 January 2017

Color Codes – Different color wires serve different purposes

Black : Hot wire, for switches or outlets.

Red : Hot wire, for switch legs. Also for connecting wire between 2 hardwired smoke detectors.

Blue and Yellow : Hot wires, pulled in conduit. Blue for 3-4 way switch application, and yellow for switch legs to control fan, lights etc.

White : Always neutral.

Green and Bare Copper : Only for grounding.

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