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What is the blue wire on a ceiling fan? Ceiling Fan Wiring Explained — Advanced Ceiling Systems | Ceiling fan wiring, Ceiling fan light kit, Ceiling fan switch
How to wire an exterior spotlight with brown, blue, and green/yellow cables to old fashioned wiring that has 3 red, 2 black, and 1 white cables from a switch - Quora
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What are the blue wires for this switch? The grounds? : r/AskElectricians
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electrical - New light switch has blue, black, and white wires. Wall has black, white, and ground. Can I make it work? - Home Improvement Stack Exchange
How to replace faulty motion light switch with regular light switch? Where do I put the black and blue wires here? I suspect the blue is power coming in but not 100%
House Electrical Wiring Color Codes | Mr. Electric
