Wiring a spa pump for use as general water pump

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Old 08-13-19, 03:57 PM
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Wiring a spa pump for use as general water pump

I am wiring a 240V 2-speed single phase spa pump for use as a water pump (not with a spa). I have 4 connections (high speed, low speed, common and ground). I intend to power it using a 4 prong dryer type outlet (2 hot legs at 120V, common and ground). Which leg on the dryer outlet goes to which connection on the spa pump?
I want to only use the high speed option (no need for the low speed).
 
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Old 08-13-19, 05:21 PM
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The plug should be labeled
X and Y are the hot. They are the straight blades
W is the neutral.The blade is L.
G is ground. The blade is semi round.
 
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Old 08-13-19, 06:36 PM
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2 hot legs at 120V, common and ground
The two hot legs are 240 volts between them, not 120. You will not use the neutral (what you call the "common") if the pump is 240 volts.
 
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Old 08-14-19, 05:53 AM
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You probably know already but spa pumps are not self priming. You'll either need to prime it before use or locate it lower than the water source.
 
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Old 08-19-19, 08:25 AM
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Thanks for the info everyone. From what I understand, I will connect one hot lead to "high speed" on the pump, the other hot to neutral/common (giving me 240V) and ground to the motor frame. I will cap the common/ground from the power cord as it will not be used.

Is a benefit or danger to combining the neutral and ground wires? Isn't the neutral grounded back at the panel?

And yes, the pump will be the low spot in the plumbing so it will be primed...
 
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Old 08-19-19, 08:28 AM
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You're not combining ground & neutral. You connect the ground (green) to the motor frame and you cap off the neutral (white) leaving it unused. The hots (black & red) connect to the high speed and the common terminals on the motor.
 
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Old 08-26-19, 08:07 AM
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Thanks all, I got it working.
 
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