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Color-Coding of Electrical Wires and Terminal Screws
electrical - Which one is the common wire on this 3-way switch? - Home Improvement Stack Exchange
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Automated 3-way Switches: What should my wiring look like? (US Version) - Wiki - SmartThings Community
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Electrical circuit and wiring basics for homeowners.
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3-Way Switch Wiring Explained - MEP Academy
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Is it normal to have your common wire go to your switch? - DoItYourself.com Community Forums
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