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30 HP at 480 (3 Phase) - 746 multiplied by 30 = 22380

22380 divided by 480 (3 Phase) = 46.5

46.5 divided by 1.73 = 29.5AMPS

Motor speed and efficiency may change the actual result. Always refer to the name plate data

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14y ago
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13y ago

20 *746 = 14.920 k.W

i = 14.92 k.w / v * p.f * root(3)

=25.9 amp

25.9 * 150% = 38.85 AMP

<<>>

The above question can not be calculated because the voltage of the motor is not given. For code rule proposes a 20 HP motor at given voltages are, 200 volts = 62 amps, 230 volts = 54 amps, 460 volts = 27 amps and 575 volts = 22 amps. For wire sizing for motors always use the motors nameplate rating.

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12y ago

40 Amps

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Q: How many amps does a 3 phase 20 hp motor use?
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What size of circuit breaker do you use for 25amperes induction motor?

Read the specification plate on the motor to determine the amount of current that the motor uses, as well as the voltage and phase. Most likely, it will be a 3 phase motor, so you can't simply connect it to your house wiring, but without sufficient information, it is impossible to tell you all of the specifics. &lt;&lt;&gt;&gt; The code book rates the amperage of a three phase 40 HP motor by different voltages. at 200 volts - 120 amps, 230 volts - 104 amps, 460 volts - 52 amps and 575 volts - 52 amps. A breaker for a motor has to be sized to 250% of the motors full load amps. Also the wire size for a motor has to be 125% of the motor full load amps.


How many amps does a one horse power motor draw?

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How many amps does a 50 horse power electric motor use?

Need to know the voltage of the motor.


What type of induction motor is used in water pump set?

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How many amps does a 30HP motor use hooked to 480v 3 pH 60Hz line?

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What is the running amps of a 45 kW motor?

To determine the running amps of a 45 kW motor, you would need to know the voltage at which it operates. You can use the formula: Amps = (kW x 1000) / (Volts x power factor). Once you have the voltage and power factor information, you can plug them into the formula to calculate the running amps.


What size time delay fuse do you use on a 40 hp 230 volt 3 phase motor?

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What size of circuit breaker do you use for 25amperes induction motor?

Read the specification plate on the motor to determine the amount of current that the motor uses, as well as the voltage and phase. Most likely, it will be a 3 phase motor, so you can't simply connect it to your house wiring, but without sufficient information, it is impossible to tell you all of the specifics. &lt;&lt;&gt;&gt; The code book rates the amperage of a three phase 40 HP motor by different voltages. at 200 volts - 120 amps, 230 volts - 104 amps, 460 volts - 52 amps and 575 volts - 52 amps. A breaker for a motor has to be sized to 250% of the motors full load amps. Also the wire size for a motor has to be 125% of the motor full load amps.


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How many amps does a one horse power motor draw?

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How many amps does a 50 horse power electric motor use?

Need to know the voltage of the motor.


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