## DC kW to amps calculation formula

I_{(A)} = 1000 × P_{(kW)} / V_{(V)}

The current **I** in amps (A) is equal to 1000, multiplied by the power **P** in kilowatts (kW), divided by the voltage **V** in volts (V).

So,

*A = 1000 × kW / V*

*amp = 1000 × kilowatt / volt*

**For example:**

*Power (P) = 3kW*

*Voltage (V) = 110V*

*Current (I) = 1000 x 3kW / 110V = 27,27A*

## AC single phase kilowatts kW to amps calculation formula

I_{(A)} = 1000 × P_{(kW)} / (PF × V_{(V)})

The phase current **I** in amps (A) is equal to 1000, multiplied by the power **P** in kilowatts (kW), divided by the power factor **PF**, multiplied by the RMS voltage **V** in volts (V).

So,

*A = 1000 × kW / (PF x V)*

*amp = 1000 × kilowatt / (PF x volt)*

**For example:**

*Power (P) = 3kW*

*Voltage (V) = 110V*

*PF = 0,7*

*Current (I) = 1000 x 3kW / (0,7 x 110V) = 38,96A*

## AC three phase kW to amps calculation formula

### Line to line voltage

I_{(A)} = 1000 × P_{(kW)} / (√3 × PF × V_{L-L(V)})

The phase current **I** in amps (A) is equal to 1000, multiplied by the power **P** in kilowatts (kW), divided by square root of 3, multiplied by the power factor **PF**, multiplied by the line to line RMS voltage **V**_{L-L} in volts (V).

So,

*A = 1000 × kW / (√3 × PF x V)*

*amp = 1000 × kilowatt / (√3 × PF x volt)*

**For example:**

*Power (P) = 3kW*

*Voltage (V) = 110V*

*PF = 0,7*

*Current (I) = 1000 x 3kW / (√3 × 0,7 x 110V) = 22,49A*

### Line to neutral voltage

I_{(A)} = 1000 × P_{(kW)} / (3 × PF × V_{L-N(V)})

The phase current **I** in amps (A) is equal to 1000, multiplied by the power **P** in kilowatts (kW), divided by 3, multiplied by the power factor **PF**, multiplied by the line to neutral RMS voltage **V**_{L-N} in volts (V).

So,

*A = 1000 × kW / (3 × PF x V)*

*amp = 1000 × kilowatt / (3 × PF x volt)*

**For example:**

*Power (P) = 3kW*

*Voltage (V) = 110V*

*PF = 0,7*

*Current (I) = 1000 x 3kW / (3 × 0,7 x 110V) = 12,99A*