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Now you can also have a 4 wire 220 V circuit.

Now this plug in does not look like the picture above because this outlet  has a forth connector.

This type of circuit has a 4th wire which is the neutral wire, plus the two hot wires and the ground.

This 4 wire 220V circuit is typical on you stove outlet amongst other things.

220V 4 wire outlet

Here is a video showing you all about this type of 220V circuit.

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