Question about Pool & Spa
If you put the tester on the white wire and ground and you read 120V, AND you put the tester on the black and ground and you also read 120V- you have 240 V. I don't know what tester you're using, but you should be reading 240V with the tester connected to the black and white wires. Also, to confirm if this circuit is 240V, look to see if the circuit breaker is a double breaker (two breaker switches connected to each other, so when you turn the breaker off, the two switches turn off together)
Does the motor operate on 240V? there should be directions/diagram on the motor housing where the wires hook up. Look on the cover inside, or in the user manual to see if you can hook the pump up to 240V.
Just as a side note - If this circuit is ,in fact, 240V, the white wire insulation should really be covered over with either black or red electrical tape, to identify it as a hot wire.
Hope this helps. Good luck.
Posted on Jul 23, 2009
Most probable cause is that you have the black and white on the same phase, and that's why you have 120 volts from black to ground and from white to ground, but 0 across black and white. If the motor ran on 120 volts, why are you connecting it to 240?
In any event, in order to get 240 volts, move the white to a circuit breaker that is directly above or below the breaker that feed the black wire. You are supposed to use a 2 pole breaker for 240 volts anyway
Posted on Jul 23, 2009
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Posted on Jan 02, 2017
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