Help! Watts, Amps & Volts

Discussion in 'Do It Yourself' started by IAMGROOT19, Feb 3, 2020.

  1. Hi everyone,
    I'm trying to find the volt & amp to my 60w centrifugal fan & I have googled for the specs online & emailed the store where I bought it, yeah I ain't get sh** so..my calculations here is
    15 volts x 4 milliamps = 60w
    &
    12 volts x 5 Milliamps = 60w

    Can I have it both ways or nah..
     
  2. A brand/model# would be helpful.
     
  3. No brand/Model sorry..its why I don't know Voltage & Amps
     
  4. #4 DaPhats, Feb 3, 2020
    Last edited: Feb 3, 2020
    Are you sure you mean milliamps? I assume you mean amps instead.

    15 volts x 4 milliamps = 0.06w
    12 volts x 5 milliamps = 0.06w

    Is there an electrical sticker of any kind on it?
     
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  5. Also remove the cover and look for labels. If still nothing just replace it imo.

    What's it currently running on, 12/5 or 15/4?
     
  6. Yes I was sure & now I know I have been corrected, Thanks, its
    15v X 4A = 60w &
    12v X 5A = 60w.

    Power : 60w
    Voltage : 240v
    Speed : 2550rpm
    Current : 26A
    Frequency : 50Hz
    Capacity : 2micromolF/450v

    I'm trying to figure out the breaker for this thing in amps if it makes any sense
     
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  7. 240v /60w = .25 amps
     
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  8. Coolies..Thanks..I added it up & yup your right.
     
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  9. How to Convert Amps to Watts
    It is also possible to convert amps to watts using the Watt’s Law formula. The formula to convert watts to amps can be converted using algebra to also read:

    watts = amps × volts

    Thus, to find the power, or wattage, simply multiply the current in amps by the voltage.

    For example, find the wattage of 8 amps at 120 volts

    power = current × voltage
    power = 8A × 120V
    power = 960W

    1 kilowatt is equal to 1,000 watts, thus it is possible to use the formulas above to also convert kW to amps, but watts need to be converted to kW first. Use our kW to amps calculator to solve for kilowatts.

    Equivalent Watts and Amps at 120V AC
    wattage to amperage conversions at 120 volts.
    Power Current Voltage
    50 Watts 0.4167 Amps 120 Volts
    100 Watts 0.8333 Amps 120 Volts
    150 Watts 1.25 Amps 120 Volts
    200 Watts 1.667 Amps 120 Volts
    250 Watts 2.083 Amps 120 Volts
    300 Watts 2.5 Amps 120 Volts
    350 Watts 2.917 Amps 120 Volts
    400 Watts 3.333 Amps 120 Volts
    450 Watts 3.75 Amps 120 Volts
    500 Watts 4.167 Amps 120 Volts
    600 Watts 5 Amps 120 Volts
    700 Watts 5.833 Amps 120 Volts
    800 Watts 6.667 Amps 120 Volts
    900 Watts 7.5 Amps 120 Volts
    1000 Watts 8.333 Amps 120 Volts
    1100 Watts 9.167 Amps 120 Volts
    1200 Watts 10 Amps 120 Volts
    1300 Watts 10.833 Amps 120 Volts
    1400 Watts 11.667 Amps 120 Volts
    1500 Watts 12.5 Amps 120 Volts
    1600 Watts 13.333 Amps 120 Volts
    1700 Watts 14.167 Amps 120 Volts
    1800 Watts 15 Amps 120 Volts
    1900 Watts 15.833 Amps 120 Volts
    2000 Watts 16.667 Amps 120 Volts
    2100 Watts 17.5 Amps 120 Volts
    2200 Watts 18.333 Amps 120 Volts
    2300 Watts 19.167 Amps 120 Volts
    2400 Watts 20 Amps 120 Volts
    2500 Watts 20.833 Amps 120 Volts
    Equivalent Watts and Amps at 12V DC
    Equivalent wattage and amperage values at 12 volts.
    Power Current Voltage
    5 Watts 0.4167 Amps 12 Volts
    10 Watts 0.8333 Amps 12 Volts
    15 Watts 1.25 Amps 12 Volts
    20 Watts 1.667 Amps 12 Volts
    25 Watts 2.083 Amps 12 Volts
    30 Watts 2.5 Amps 12 Volts
    35 Watts 2.917 Amps 12 Volts
    40 Watts 3.333 Amps 12 Volts
    45 Watts 3.75 Amps 12 Volts
    50 Watts 4.167 Amps 12 Volts
    60 Watts 5 Amps 12 Volts
    70 Watts 5.833 Amps 12 Volts
    80 Watts 6.667 Amps 12 Volts
    90 Watts 7.5 Amps 12 Volts
    100 Watts 8.333 Amps 12 Volts
    110 Watts 9.167 Amps 12 Volts
    120 Watts 10 Amps 12 Volts
    130 Watts 10.833 Amps 12 Volts
    140 Watts 11.667 Amps 12 Volts
    150 Watts 12.5 Amps 12 Volts
    160 Watts 13.333 Amps 12 Volts
    170 Watts 14.167 Amps 12 Volts
    180 Watts 15 Amps 12 Volts
    190 Watts 15.833 Amps 12 Volts
    200 Watts 16.667 Amps 12 Volts
    210 Watts 17.5 Amps 12 Volts
    220 Watts 18.333 Amps 12 Volts
    230 Watts 19.167 Amps 12 Volts
    240 Watts 20 Amps 12 Volts
    250 Watts 20.833 Amps 12 Volts
     
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  10. Thanks for that, but what if I don't know the volts & Amps to the product but only the wattage.
    There may be no name of the model or specs to it
     
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  11. The voltage should be known. If it’s a residential outlet it’s 120v. So you can divide watts by voltage. For example. A 1000 watt light at 120 volts would be 8.4 amps.


    Sent from my iPhone using Grasscity Forum
     
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  12. Like @Dblee, @Headhunterpipes, @Reo, @DaPhats, has said, take 60W and divide by whatever the Voltage is being supplied to the outlet that the fan is plugged into, then you'll calculate amps flowing into the fan assuming PF is 1.

    A fan uses a motor which creates an inductive load. These inductive loads can have poor power factors which means that they could potentially draw more current than what you'd expect if not including PF into your calculation. PF only effects AC powered loads.

    (VoltsAC * AmpsAC) * PF = Watts
    Watts = PF * (VoltsAC * AmpsAC)

    Assuming a PF of 1 on a 120VAC outlet...
    60W = PF * (120VAC * Xamps)
    60W = 1 * (120X)
    60W = 120X
    X = 0.5A

    Assuming a PF of 1 on a 240VA outlet...
    60W = PF * (240VAC * Xamps)
    60W = 1 * (240X)
    60W = 240X
    X = 0.25A

    Assuming a PF of 0.8 on a 120VA outlet...
    60W = PF * (120VAC * Xamps)
    60W = 0.8 * (120X)
    60W = 96X
    X = 0.625A

    Assuming a PF of 0.8 on a 240VA outlet...
    60W = PF * (240VAC * Xamps)
    60W = 0.8 * (240X)
    60W = 192X
    X = 0.3125A

    At a lower PF the amount of current the fan will draw will be greater than if it had a high PF of 1 (highest). Devices under 75W aren't regulated to have extra circuitry to have their power factor corrected, so Im assuming the fan will draw a bit more current than what you'd traditionally expect due to my assumption the PF is under 1. A $10 "kill-a-watt" meter will give you a PF reading.
     

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