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Author Topic: How much electricity does a pump use  (Read 8731 times)

shepherd boy

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Re: How much electricity does a pump use
« Reply #15 on: July 09, 2015, 07:27:33 PM »
Sorry It's over my head. I was just reading the label. Grundfos 15-42 230=.41amp  115=.74amp  Not exactly half but close. Do they only calculate one leg?
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RSI

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Re: How much electricity does a pump use
« Reply #16 on: July 09, 2015, 07:38:28 PM »
That is amps, not watts. A 15-42 is not the same size pump so would not be exactly half the amps of the 115v 15-58.
Watts normally equals amps x volts.
It doesn't work out exact though on motors because there is a power factor that throws the numbers off. You really need to use a watt meter to see what the actual usage is. An amp meter will not give you accurate results.
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shepherd boy

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Re: How much electricity does a pump use
« Reply #17 on: July 09, 2015, 07:43:29 PM »
I get it and you are right.
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