How can I calculate amps?

Question

for a 5 KW machine in 220 volt?
Also for a 5 HP motor in 220 volt?

Answer 1

It's pretty simple;

We must remember the following equation where;
P = V * I
where;
P = Power in watts
V = Volts
I = Amps

For the first case
5000 = 220 * I (5kw = 5000 watts)
Therefore; I = 5000 / 220 = 22.73 Amps

for the second case
1 hp = 0.75 kw
therefore 5 hp = 3.75 kw

Therefore as in the first case
3750 = 220 * I
I = 3750 / 220 = 17.05 Amps

Hope this helps. Good luck

Answer 2

Divide 5kW by 200 volts to give a safety factor---25 Amps.

Figure 1000 watts per HP because motors are not 100 percent efficient---so again, it's 25 amps.

Now considering that you wish to start the motor, you need to allow for starting current. A factor of two is consevative, so figure 50 Amps.

Answer 3

Volts times amps = watts, so 5000 watts / 220 volts = 22.727272 amps.

1 hp = 745.699872 watts, so 5 hp = 3728.499 watts. Volts times apms = watts, so 3728.499 watts / 220 volts = 16.9477 amps.

Answer 4

I think that Watt= volt* Amp so 5000/220=22.72 Amp cuz 5000 is watt..
And HP is horse power
HP=745.7 Watt
You count that!!

Answer 5

220 / 5 I thought.

Answer 6

first one, can do. second, no can do.

P=power (W), I=AMP (A), E= VOLT.

Do Know how to solve algebraic math or equations?

P=I X E, --- 5000= I X 220V. Solve for I, therefore:

5000/220 = I, what's that equal to. so, I = 42.07A. (high current.)

Answer 7

Power(Watts)=Voltage(Volts)XCurrent(Amps)

To convert HP to Watts: 1hp=746W

Answer 8

Go here.

http://www.the12volt.com/ohm/page2.asp