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There is missing information in the question, but I will make some assumptions and answer it...
Assumptions (and givens): (460V), (80 HP), three phase delta, power factor of 0.92, efficiency of 0.95...
One horsepower (electric motor) is 746 watts, so 80 HP is 60 KW. Divide by three and you get 20 KW per winding. Divide by 0.92 and divide by 0.95 and you get 23 KVA per winding. Divide by 460 and you get 49 A per winding. Multiply by 1.732 (square root of 3) and you get 86 A per phase.
Allowing for an 80% load factor on the breaker, per NEC, you need a 107 A three phase breaker. You also need a wye-delta starter, so as to minimize thermal damage to the motor on startup.
Now, 107 A is a lot, requiring large wires and subsequently large motor windings. I would consider a higher voltage motor, such as 4160V. Back-calculating all of that, gives a breaker rating of 12 A, a much more reasonable value. You still need a wye-delta starter.
What else can I help you with?
How many amps does a HP motor use hooked to V pH Hz line?
The number of amps a horsepower (HP) motor uses when connected to a variable voltage, phase, and frequency (V pH Hz) line depends on the motor's efficiency, voltage, and load conditions. A general rule of thumb is that a 1 HP motor typically draws about 10 amps at 120 volts or about 5 amps at 240 volts under full load conditions. However, this can vary based on the motor's specific design and operating conditions. To get an accurate amperage, it's best to refer to the motor's nameplate or specifications.
How many starting amps carried out by 20 hp three phase motor?
The starting current for a 20 HP three-phase motor typically ranges from 4 to 8 times the full-load current. For a 20 HP motor, the full-load current is approximately 24 to 26 amps, depending on the voltage. Therefore, the starting current can be around 96 to 208 amps. Actual values may vary based on the motor's design and specific application conditions.
How many amps will a 3 hp motor pull on 230 volts?
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.
How many amps does a 3 phases 600 volt 10 hp draw?
Assuming the power factor is 1, a 10 hp motor operating at 600 volts in a three-phase system would draw approximately 13.33 amps.
What is the start up amps on a 200 hp 3 phase 480 volt motor?
i have 200 hp motor what i need cable size in 100 feet distance
How many amps does a 15 hp motor draw?
To answer this question the voltage of the motor must be stated.
How many amps does a 30HP motor use hooked to 480v 3 pH 60Hz line?
The electrical code states that a 30 HP induction motor at 460 volts three phase will draw 40 amps. <<>> I = 33.34 AMPS IF EFF.= 95% AND P.F.= 85%
What is the full load amps for 2.4 hp motor at 460 volts?
what is the full load amps for 2.4 hp motor at 460 volts ?
How many amps does a 1 hp electric motor pull under a load?
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.
What size time delay fuse do you use on a 40 hp 230 volt 3 phase motor?
The electrical code book states that a 40 HP 230 volt three phase motor draws 104 amps. For that motor the wire must be rated for 131 amps, Non time delay fuses at 300 amps, time delay fuses at 175 amps or a 250 amp circuit breaker. When calculating wire sizes and motor protection the motor's full load amperage should be taken from the motor's nameplate.
Motor 1 hp equals how many amps?
hp= 745.699872so if the rated voltage is 220 so 745.699872 /220=3.389 A
Will a 10 hp 220 volt motor draw large amounts of electricity?
A single phase 10 HP motor will draw aproximately 50 amps. A three phase 10 HP motor will draw aproximately 28 amps.
How many amps does 1 phase 220volt 7.5 HP draw?
Look at the motor nameplate and it shoud have the amp draw on it. If the nameplate is missing, then the amp draw depends on what type of motor it is. The basic calculation to get you in the ball park would be as follows: 1 HP = 0.75 KW 7.5 HP = 5.63 KW Assume the efficiency of the motor is 80%, then the power supplied will need to be 5.63/0.8 = 7.04 KW amp draw = 7040/220 = 32 amps <<>> For calculation purposes the electrical code book states that a 7.5 HP motor draws 40 amps.
How many amps does a five horse power motor draw?
It depends on the voltage-- I think at 110v it's 4 amps per hp
How many amps does a 2 hp 210 volt single phase motor draw?
Then you are trying to get more HP out of the motor that it can supply. Back off on the load that the motor is driving or put a bigger motor onto the load.
How many ampere in one hp?
There are 746 watts in 1 HP. Watts = amps x volts. It depends on the voltage rating of the motor. Amps = 746/volts = ? need voltage.
How many amps does a 5 hp 208 volt 3 phase motor draw?
read the name plate on the motor
