How to convert 1200 watts to amps

How to convert electric power of 1200 watts (W) to electric current in amps (A).

You can calculate (but not convert) the amps from watts and volts:

Amps calculation with voltage of 12V DC

For DC power supply, amps are equal to watts divided by volts.

amp = watt / volt

amps = 1200W / 12V = 100A

Amps calculation with voltage of 120V AC

For AC power supply, amps are equal to watts divided by power factor times volts.

amps = watts / (PF × volts)

For resistive load without inductors or capacitors, the power factor is equal to 1:

amps = 1200W / (1 × 120V) = 10A

For inductive load (like induction motor), the power factor can be approximately equal to 0.8:

amps = 1200W / (0.8 × 120V) = 12.5A

Amps calculation with voltage of 230V AC

For AC power supply, amps are equal to watts divided by power factor times volts.

amps = watts / (PF × volts)

For resistive load without inductors or capacitors, the power factor is equal to 1:

amps = 1200W / (1 × 230V) = 5.217A

For inductive load (like induction motor), the power factor can be approximately equal to 0.8:

amps = 1200W / (0.8 × 230V) = 6.522A

 

How to convert watts to amps ►

 


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