3/6/2024 0 Comments Transformer wires color codingIf you find wires in either of these colors, you’ve located the neutral wires. Then, blue wires are most often used by travelers for three- or four-way switches (for instance, if you have switches at the top and bottom of a staircase that control the same light, that’s a three-way switch). For example, you might see yellow wires as switch legs to ceiling fans, structural lights, and outlets paired with light switches. Instead, blue and yellow wires are used as the live wires pulled through a conduit. While wires in these colors carry power, they are not used in typical outlet wiring. It’s possible to link two red wires together or a red wire to a black wire. In addition, red wires are used to connect hardwired smoke detectors to the home’s power system. Like black wires, they can also be used in switch legs. In 220-volt circuits, red wires are the secondary live wires. Consider all black wires to be live at all times. Also, black wires are often used as switch legs in circuits, which is the connection linking a switch to the electrical load. This color of wire is used to transfer power to switches and outlets in all types of circuits.
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