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FORMULAS FOR CALCULATING AMPERES


the formulas below are at 100% power factor

Single Phase

horsepower times 746,
divided by the voltage,
will give you amperage
wattage divided by
voltage will give you
amperage
kilowatt times 1000,
divided by the voltage,
will give you amperage
kilovolt amperes times 1000,
divided by the voltage,
will give you amperage
voltage times amperage 
will give you wattage
voltage times amperage
divided by 746
will give you HP

Three Phase

horsepower times 746,
divided by
the voltage times 1.73,
will give you amperage
wattage divided by
the voltage times 1.73
will give you amperage
kilowatt times 1000
divided by
the voltage times 1.73,
will give you amperage
kilovolt amperes times 1000
divided by
the voltage times 1.73,
will give you amperage
voltage times amperage
times 1.73
will give you wattage
voltage times amperage
times 1.73
divided by 746
will give you HP

 

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