AO Smith 2 Hp Spl 3450rpm M56 Frame 115/230 Volts Replacement Air Compressor Motor Electric Motor No.B381 Logo
Posted on Nov 25, 2010
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Need to know how to put the wires in the right order on a AO Smith 5.0 56 spa pump red white and black

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Rian Peters

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  • Posted on Oct 30, 2011
Rian Peters
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Red and Black should each be connected to the individual power legs, for 230 V operation. The white wire should be connected to ground.

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Wiring a 230v ao smith pump : L1 and L2 connection

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My pool originally had a 2 speed AO Smith pump motor. Several years back it was replaced with an AO Smith single speed motor. I am replacing that motor with a new AO Smith single speed Centurion Switchless...

Is it going to run on 230V then? If so you would normally use red and black. The white wire should be a neutral and the ground wire is obviously ground.

Do you have a meter you can use to confirm the voltage between the wires? If you do you'll want to start with red and white since you seem to think black was not being used before. If the voltage reads 230 and the motor is set up for 230 then attach one wire to L1 and the other to L2...it will not matter which is connected where as long as one is on each terminal. Insulate the black and ground the ground lead to the motor ground screw.

If the voltage is not 230 between those two check between red and black. If that is the 230 then insulate white and put red and black to L1 and L2.

John
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