Question about AO Smith 1.5hp Pool Pump Motor 2 Speed Ao Smith Electric for Motor Pool & Spa Pump Bn34

1 Answer

I'm trying to hook up an AO Smith two speed motor to just run the low speed. The pump is for a water feature and it doesn't need the high speed, so I want to run it on low speed to save cost. My question is about how to connect the electric wires. My sysem is 230 V. The diagram on the motor shows L1 as common, L2 as high speed A as low speed and G as ground. I have three wires to connect. I've hooked my common to L1 and my ground to G. Those were obvious. My third wire should connect to A. But A isn't a screw-type connector. It's just a push type male connector. Do I need to install a female receptacle on the third wire in order to make the connection? That seems a little odd, and before I tried it, I hoped for some good advice. (will it handle the voltage?) Thanks.

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  • ktsheldon Apr 11, 2011

    I've made the connections and the motor runs properly. I want to post the solution because there is an error in my original problem description.

    First, these are the correct connections for a two-speed A O Smith pool pump motor.

    L1 is for the high speed Load
    L2 is for the Common
    A is for the low speed Load
    Ground is for the Green, ground wire.

    I described the L1 and L2 backwards in my original question. Don't get them confused. The correct method is as as described in this comment.

    L1 and L2 offer both screw type and push pin type connectors. A offers only a push pin type connector. Ground offers only a screw type connector

    You can attach spade connectors onto the ends of all your wires if you choose and then you can just push them onto the appropriate connector on the motor. Definitely this is needed for your low speed load wire, as there is no screw connector for this.

    In my case, I simply converted a single speed pump to a 2 speed pump using only the low speed for energy efficiency. So my previous L2 connector went back to L2. (this is the common). My previous L1 connector went onto A (this is the load). And ground went to ground.

  • ktsheldon Apr 11, 2011

    My original question described the wiring hookup incorrectly. the correct wiring hookup is as follows:

    L1 - for high speed load (both screw type and pin type connectors offered)
    L2 - for common (both screw type and pin type connectors offered)
    A - for low speed load (pin type connector only)
    G - for ground (screw type connector only)

    Solution: Just solder a spade connector onto the low speed load wire and push it onto the connector.



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Yes, it will handle the voltage...

It is odd indeed as a normal AOSmith two-speed motor will have quick-connect AND screw posts for line connection terminals. If you are certain there are only two screws yet the motor is a two-speed then the answer to the first question is yes; you'll need a female quick-connect terminal for your second line connection to the A terminal.


Posted on Apr 11, 2011

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Posted on Jan 02, 2017

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SOURCE: My pool originally had a

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 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.


Posted on May 24, 2011

  • 8516 Answers

SOURCE: wiring a 230v ao smith

Hi, assuming you have 4-conductor wire, use the black and red wires for L1 and L2. It doesn't matter which goes to which. If you do not have a red wire, use black and white. The green or bare wire in a 3-wire cable goes to the ground. If you have 4-conductor wire, the ground wire is the one you used for the GFCI on the breaker--usually the white wire. Please let me know if you have more questions, and thanks for using FixYa.

Posted on Aug 08, 2011

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