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Saturday, 11 October 2014

how to calculate watts in a single phase system

how to calculate watts in a single phase system



Watts = power

watts = volt * ampere * power factor

watts = v * i * p.f

Example :

     To find watts in single phase electric heater  having 3.2 amps and operating  at 230 V ,0.8 power factor .

Formula :

Watts(P) = V * I *P.F

               = 230 * 3.2 * 0.8

          P   = 588 watts 

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