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  #1  
Old 09-22-2007, 02:11 PM
unone
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Question how to convert amps into kwh usage

i need to convert ampere of usage into kwh
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  #2  
Old 09-22-2007, 07:38 PM
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Default Re: how to convert amps into kwh usage

an ampere is an instantaneous measurement, while KWH is a measurement of watts (in this case, kilowatts) over time. it's like converting linear feet to cubic feet, you just can't do it
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  #3  
Old 02-19-2008, 05:39 AM
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Default Re: how to convert amps into kwh usage

converting amps to kwh requires multiple equasions, for example i will show the process for converting the amps used by a 100 watt bulb in a 115/120 volt powered circuit.
E=IxR states that volts are equivilent to amps X watts
So inversly volts divided by watts = amps
in this case 120 volts divided by 100 watts =1.2 amps
that given and adding that kwh=1000 watts used for 1 hr
so inversly a 1.2 amp load used continuosly for 1 hr = 100watt hours or 0.10kwh

I hope that helps
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Old 03-29-2008, 03:40 AM
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Arrow Re: how to convert amps into kwh usage

Quote:
Originally Posted by unone
i need to convert ampere of usage into kwh
I have a motor drawing 4.7 amps at 120V. What is my kwh usage
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  #5  
Old 03-29-2008, 09:55 AM
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Default Re: how to convert amps into kwh usage

Quote:
Originally Posted by Unregistered
I have a motor drawing 4.7 amps at 120V. What is my kwh usage
It depends on how long it runs. Instantaneous power is 4.7 A x 120 V = 564 W or 0.564 kW.

Therefore it uses 0.564 kWh/h. Multiply by hours operated and you will have your answer.
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  #6  
Old 03-08-2009, 08:02 AM
Aayush
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Smile Re: how to convert amps into kwh usage

I think JohnS method should be helpful to you...
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  #7  
Old 03-24-2009, 01:42 PM
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Default Re: how to convert amps into kwh usage

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Originally Posted by gubment_cheez
an ampere is an instantaneous measurement, while KWH is a measurement of watts (in this case, kilowatts) over time. it's like converting linear feet to cubic feet, you just can't do it
KWH is a measure of energy, not power. it is kilowatts* hours.
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  #8  
Old 08-16-2009, 07:51 AM
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Question amps-kwh

if i reduce the amps rate by an energy saver will kwh will reduce
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  #9  
Old 08-16-2009, 08:33 AM
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Default Re: amps-kwh

Quote:
Originally Posted by Unregistered View Post
if i reduce the amps rate by an energy saver will kwh will reduce
kWh = volts*amps*hours/1000

If you reduce the amps, the energy consumed will be less UNLESS it runs longer (for example, something controlled by a thermostat that runs until it reaches a temperature.)

Picky note: above is only correct if current is in phase with voltage and constant. If current varies or turns on and off with a switch (thermostat) it is a little more complex.
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  #10  
Old 08-17-2009, 03:32 AM
wengg@kores-india.com
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Default Re: how to convert amps into kwh usage

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Originally Posted by unone View Post
i need to convert ampere of usage into kwh
. one main feeder is loading 1000 amp. please let me know with formula how much kwh consumption.
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