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How to wire an old homart furnace with new moter

How to wire an old homart furnace with new motor what are the three wires on the furnace for

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Posted on May 01, 2010

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green is ground, white is neutral, red/black is usually hot on a 1 phase 110-120v motor. (normal colors are black, white, green).
if three phase, (208-220v), green is ground, white, is neutral, black/red/blue are hot. (only uses 2 of these, so there should only be a total of 4 wires). once you have the wiring connected, turn on the motor, and check the rotation direction it turns. if it turns backwards, reverse the red/black wires, the red/white wires, or the black/white wires.

be sure you look at the data plate on the motor to determine one or three phase motor.
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