how to convert amps into kwh usage

i need to convert ampere of usage into kwh

[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

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

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

[JohnS]

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.

I think JohnS method should be helpful to you...

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.

if i reduce the amps rate by an energy saver will kwh will reduce

[JohnS]

Originally Posted by Unregistered

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.

Originally Posted by unone

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.