kW to Amps Formula  kilowatt to Ampere Formulas
kW to amps formula is used to calculate amperes from kilowatts. We can calculate current in DC, Single phase, twophase, and threephase circuits when the kilowatts are known.
Formulas to calculate amps from kW  

DC kW to amps  Amps =
kW * 1000
/
E

Single phase AC kW to amps  Amps =
kW * 1000
/
E * PF

Two phase AC kW to amps  Amps =
kW * 1000
/
E * PF * 2

Three phase AC kW to amps  Amps =
kW * 1000
/
E * PF * 1.73

where kW = kilowatt
E = voltage
PF = Power factor
Contents
DC kilowatts to Amps Formula
The equation used to calculating dc current from kilowatts is:
I = (kW * 1000)/E
Example 1: A 100 kW, 400 V dc generator powers a conveyor belt in a cement power plant. Calculate the amps.
Solution: I = (100 * 1000) / 400 = 250 Amps
Single phase kilowatts to amps formula
Single phase amps is a ratio of kilowatts * 1000 and voltage times PF:
I = (kW * 1000)/(E * PF)
Example 2: A 10 kW, 100 single phase motor operates at a PF of 85%. Calculate the single phase current.
Solution: I = (10 * 1000) / (100 * 0.85) = 117.64 Amps
Twophase AC kilowatts to amps formula
Twophase AC kilowatts is a ratio of kilowatts * 1000 to E * PF * 2.
I = (kW * 1000)/(E * PF * 2)
Example 3: A twophase 20 kW, 250 V circuit is working at 0.88 PF. Find the amps.
Solution: I = (20 * 1000) / (250 * 0.88 * 2) = 45 Amps
Threephase AC kilowatts to amps formula
Threephase AC kilowatts is ratio of kilowatts * 1000 to E * PF * 1.73. Where 1.73 is an approximate for √3.
I = (kW * 1000)/(E * PF * 1.73)
Example 4: A threephase 18 kW, 440 V circuit powers load at the power factor of 0.9. Calculate the amps.
Solution: I = (18 * 1000) / (440 * 0.9 * 1.73) = 26.27 Amps