The 50hp motor has a current rating of 55.4 amps if its power factor is 0.8.
Another Answer:
One horsepower (electric motor) is 746 watts, so 50 horsepower is 37.3 KW. Assumed power factor is 0.8, so divide by 0.8 to get 46.6 KVA. Assumed efficiency is 0.95, so divide by 0.95 to get 49.1 KVA. The motor is three phase, so divide by three to get 16.4 KVA per winding. It is 480V so divide by 480 to get 34.1 amperes per winding. Assumed configuration is to run on delta, so multiply by 1.732 (square root of 3) to get 59.0 amperes per phase. This is very close to the 55.4 stated before.
Assuming 50% efficiency, 2 hp*2 = ~3 kilowatts; 3kW / 480Vrms = 6.25 amps.
Divided by 3 is approximately 2 amps per phase.
This depends on the supply voltage it is running on.
to calculate: 1hp=745W 3hp=745*3=2.2Kw assuming a 3 phase motor power is V*I*pf*the square root of 3 I would gues a PF of 0.8 if its a resonable motor which gives about 7.2 amps per phase. if the PF is bad say .65 it could pull up to 9 amps in short, too little information to give you the actual answer.
Hooking a 24V motor to a 110V source is a certain way of destroying the motor. It'll pull as many amps through its poor circuitry as the source can deliver until either the source's fuse or the motor blows.
A three-phase motor will not start if one or two phases aren't connected. If while running one or two phases "drop out", it will continue to run for awhile, but will eventually burn out, unless connected to a motor saver.
This typically has to do with how many amps you can safely pull from the secondary of the transformer.
There are a few reasons. In my opinion the most common is cost. In an industrial setting, three phase power is used to power motor loads. A three phase induction motor is more efficient than a single/split phase motor. They also have higher starting torque. A three phase load will also typically have a lower amp rating for the same size load as single phase. This saves money because you can use smaller wire.
It depends on the voltage of the motor, and whether it is single-phase or 3-phase. A 120 VAC 2HP single phase motor draws almost 20 amps, a 240 VAC single-phase 2HP motor draws about 10 amps. A 480 VAC 2HP three-phase motor only draws about 6 amps.
50 amps.
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to calculate: 1hp=745W 3hp=745*3=2.2Kw assuming a 3 phase motor power is V*I*pf*the square root of 3 I would gues a PF of 0.8 if its a resonable motor which gives about 7.2 amps per phase. if the PF is bad say .65 it could pull up to 9 amps in short, too little information to give you the actual answer.
The horsepower of the motor is needed to complete this answer.
T430.247 of the NEC shows that a 1 hp motor operating at full load on 115v will draw 16 amps, called Full Load Current (FLC). Conductors supplying this motor are required to be 125% of FLC which is 20 amps. Motor circuits are complicated things and do not follow the rules of other circuits. This motor, while drawing a maximum of 16 amps at full load and supplied with #12 AWG copper conductors can be protected by a breaker of 40 amps.
At 120 volts it will pull 4.166 amps. At 240 volts it will pull 2.08 amps.
Aprox 12 amps.
A 120 volt table lamp with a 75 watt bulb will pull 0.625 amps. With a 100 watt bulb it will pull 0.833 amps. And with a modern fluorescent 13 watt bulb it will pull 0.108 amps.
One horsepower is equivalent to 746 watts. So if the motor is wired for 220 volts the current consumed is 3.39 amps. (watts divided by voltage = current) so? the label says 7.6 amps for a 1hp with a SF of 1.25 at 240 volts. 9.6 for a 1.5 hp .this is your typical pool pump motor, what motor are you getting data from ?
your not completing the circuit your only using one phase for a three phase motor
Since one horsepower is 745 watts, a 115 volt 1 hp motor would pull about 6.5 amperes, depending on power factor.Note:That may be a theoretical value. However, practically speaking, single phase A.C. motors are notoriously inefficient. That is the reason the National Electrical Code lists the full load current of a 1 HP, 115 volt motor at 16 amps. That value is considered nominal and can vary depending on motor design. That value does not begin to factor in inrush current.The best advice is to utilize the manufacturer's motor nameplate value.