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Old May 26, 2011, 02:05 PM   #10
zxcvbob
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Join Date: December 20, 2007
Location: S.E. Minnesota
Posts: 4,215
The supply cord has 2 hot wires on opposite legs of the service (red and black), a neutral wire (white), and a ground (green or bare.) It's for a normal 220V 4-wire circuit, like for a modern electric stove or dryer. The white wire is for the timer, clock, motor, electronics, etc that runs on 110v
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