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Depends entirely on current draw. The higher the current, the higher the draw. For example, the wires in a radio may be pretty small, while the wire to operate your stove is pretty large. The wires to operate an overhead electric locomotive or trolley may be 8 to 12 inches across.

In house wiring, the standard in most places is 14 guage for the lighting circuits, 12 guage for the convenience outlets, and bigger guages for the clothes dryer and stove.

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14y ago
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5mo ago

The size of wire needed for an AC unit depends on the ampacity of the unit. It is recommended to consult the manufacturer's specifications or a qualified electrician to determine the appropriate wire size. Typically, a 12-gauge wire is used for 20-amp circuits and a 10-gauge wire for 30-amp circuits.

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Q: What size wire do you need for AC?
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