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How do you wire a 120V circuit off a 240V circuit?

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2015-07-15 19:09:11
2015-07-15 19:09:11

In a 4 wire, 220v AC circuit, each black wire carries 110v, the white serves as the return, or negative, and the copper is the ground.

So connect the white to the negative post of whatever your using (light or switch), and one of the black wires to the other for a 110V circuit.

If you're connecting a 110v two- strand wire to a 220v outlet, connect one wire to a black post and the other to the white post.

Make sure you have a neutral. Some times the white wire is the second hot and there is no neutral.

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On a 240 volt circuit both line wires are hot, so they may both be black, depending on the wire used. There is normally no neutral required unless you are also tapping off 120 volts between hot and neutral.

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Allows you to break the Circuit or a portion of the circuit.A switch is a ON / OFF device which is used to control the current in an electric circuit .It is always connected to the live wire .

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Run the RED wire to a circuit controlled by the ignition switch. Only the yellow wire should run off the battery, or an "always hot" circuit.


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