Amps To Kilowatts

Most everything that I have read here is calculating KVA, not KW. In a 3 phase system, KVA = Amps * Volts(L-L) * 1.732 (square root of 3)

The difference between KW and KVA is the power factor. In a typical motor that is fully loaded, the power factor will be somewhere in the 80% range. It decreases with load and may be somewhere around 30% in a lightly loaded motor. So:

Assuming a fully loaded 3 phase motor, KW = KVA * 0.80 (power factor). This is the amount of power that is doing useful work. The balance (KVA * 0.20) is called reactive power and is the magnetizing current required by the motor to set up the magnetic circuit inside before it can produce useful work.

Unless you have a meter that reads power factor, you are not being charged for the reactive power.

What is the maximum Kw of load can 31/2 x 300 Sq.mm Al UG Armoured cable withstand ?

Originally Posted by mohamed

i hav motor for machine 380 v /3 phas /30 kw i whant know how many amps this motor ned

kindly send me quote

Originally Posted by Unregistered

How Do You Determine Kilowatts From Amps? I Have 288 Amps How Do You Determine How Many Kilowatts That Is?

I have 24.4 amps, how many kilowatts does this relate to?

[JohnS]

Originally Posted by Unregistered

I have 24.4 amps, how many kilowatts does this relate to?

You also have to know the voltage. If it is alternating current, you also need to know power factor and whether it is single phase or three phase.

Originally Posted by Unregistered111

400amps @ 3p208

400*(3*208)=249,600w

249,600/1000=249.6

Wrong 400*(208*1.732)=w

I have motor for machine 420 v /3 phase /55 kw i want know how many amps this motor

I need formula running amp to kilowatt...

Originally Posted by thesmartfisherman.com

That was just an example of the arithmetic.

1amps= ? watt

Thanks for this. Does that mean each phase will draw 45 amps or it will be distributed in 3 phases ie. 15 amps per phase.