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  • how to convert amps into kwh usage

    i need to convert ampere of usage into kwh

  • #2
    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

    Comment


    • #3
      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

      Comment


      • #4
        Re: how to convert amps into kwh usage

        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

        Comment


        • #5
          Re: how to convert amps into kwh usage

          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
            Re: how to convert amps into kwh usage

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

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            • #7
              Re: how to convert amps into kwh usage

              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
                amps-kwh

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

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                • #9
                  Re: amps-kwh

                  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
                    Re: how to convert amps into kwh usage

                    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.

                    Comment


                    • #11
                      Re: how to convert amps into kwh usage

                      Originally posted by wengg@kores-india.com View Post
                      . one main feeder is loading 1000 amp. please let me know with formula how much kwh consumption.
                      What is the voltage? Is it single phase or three phase? How many hours does it run? What is the power factor? There is no way to answer the question without that additional information.

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                      • #12
                        Re: how to convert amps into kwh usage

                        How do I convert kwh to kwa rating? Example: 7280Kwh peak 480v 3phase.

                        Comment


                        • #13
                          Re: how to convert amps into kwh usage

                          Originally posted by unone View Post
                          i need to convert ampere of usage into kwh
                          I want to know what my consumption of KWh is for a baler machine, this is the data:
                          10hp
                          208-230/460 (3 phase, 230v)
                          28-26amp
                          1725 RPM
                          60HZ
                          Thank you.

                          Comment


                          • #14
                            Re: how to convert amps into kwh usage

                            Originally posted by Mel View Post
                            I want to know what my consumption of KWh is for a baler machine, this is the data:
                            10hp
                            208-230/460 (3 phase, 230v)
                            28-26amp
                            1725 RPM
                            60HZ
                            Thank you.
                            It depends on how many kilowatts it draws and how many hours it runs (just multiply them together).

                            In the electrical data, is there any mention of "power factor?" I ask because the numbers don't agree well. If it is 10 HP output, that is 7.46 kW output power. Since no machine is 100% rfficient, I would expect it to draw around 9-10 kW to out put that, based on typical efficiencies.

                            Edit: I started out assuming the 230 V was line to neutral. I'm pretty sure it is line to line, and needs to be divided by square root of 3.

                            If I multiply the volt*ampere rating, I get 3*230 V*26 A = 17940 VA = 17.94 kVA. However, if I assume the voltage is line-to-line and divide by the square root of 3, I get 10.4 kVA. If the power factor is close to 1, then it is also 10.4 kW. Just multiply by the hours runs for kilowatt*hours.
                            Last edited by JohnS; 08-21-2009, 09:00 AM.

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                            • #15
                              Re: how to convert amps into kwh usage

                              Originally posted by unone View Post
                              i need to convert ampere of usage into kwh
                              i want to convert 10 amps of usage into kwh

                              Comment

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