Im relacing my old swimming pool pump with a new hayward 1.5 HP .Its factory wired for 230 volts.There is aseperate Breaker box just for rthe pump .When I disconnected the old pump I saw that L1 connection was white L2 was black.Green was the ground.The breaker was old so I bought a new one.THe problem is the wires from the breaker were moved around and I can't remember where the white and black go green is no problem.The 240 volt comes in I put the circuit breaker in But can't remember if white was left on circuit breaker or right.I have a voltage meter and know how to use

Your just wanting to know what wire goes on whitch screw?

For 220 volts it does not matter

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Originally Posted by Joshdta

for 220 volts it does not matter

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Hey, It matters on the Hayward pump!! I think they are prewired for 220, if not you will have to unplug the jumper on the back of the pump and set it accordingly.

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Originally Posted by Poolnet

Hey, It matters on the Hayward pump!!! I think they are prewired for 220, if not you will have to unplug the jumper on the back of the pump and set it accordingly.

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Sorry, I misread the opening post. The pump is factory wired for 240 volts.:o

Years ago, electric companies in different areas of the US supplied power at slightly different voltages. 110/220, 115/230, and 120/240 were common. Some localities even had 117.5/235.

In recent years, 120/240 has become standard in most areas.

The motor rating must be within 10% of the supply voltage. If the motor is rated 240 volts, it will work on any voltage between 216 and 264.

To answer your original question, it does not matter which wire goes to which terminal on a double-pole breaker.

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Originally Posted by Poolnet View Post
Hey, It matters on the Hayward pump!! I think they are prewired for 220, if not you will have to unplug the jumper on the back of the pump and set it accordingly.

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The jumper select either high (240) or low (120) volts.