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The amperage of a motor is governed by the voltage that the motor operates on. Without a voltage given, an answer can not be given.

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Q: How many amps do you need to power 1hp?
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What is the starting current of a 1hp water pump?

maximum current of a 1hp


How many watts are equal to 1 hp?

1hp = 745.7 watts


Relationship between horsepower cc and watt?

1hp=746watts


What kva generator to run 15Hp motor?

1HP = 746 watts 15 HP = 11190 watts = 11.19 kW You would need a generator of at least 13kW. UPS Distributor for 15 Years.


How many amp does a 40 hp motor draw at 440 volts?

At 440 volts, a 40 hp motor pulls about 68 amperes. Well, sort of...The definition of a horsepower for an electric motor is 746 watts. Multiply 746 by 40, and divide by 440, and you do get 68 amperes.1hp=746Whence, 40hp=29840Wgiven that the motor draws 440voltsbut current = power/voltage.therefore, current=29840/440 = 67.81818182 amps.The complexity, however, is that a motor is an inductive load and it has reactance. This reactance will change the phase angle between voltage and current, causing current to lag voltage by some amount. Power factor is a measure of the ratio of apparent power to true power, and is essentially the cosine of the phase angle between voltage and current. This power factor will make the true power be higher than the apparent power, but horsepower is based on apparent power.Bottom line is that the amperes in this case will be dependent on the power factor, perhaps about 75 amperes, maybe.Also, such a motor is bound to be a three phase motor. The amperes will be spread out among the three phases so, for 68 amperes, it would be about 23 amperes per phase, and for 75 amperes, it would be about 25 amperes per phase.In terms of power factor, it might be closer to unity than anticipated, if the motor has power factor correction capacitors installed.Keep in mind that starting current will be much higher than running current. Also note that large motors of this type would typically be started in wye configuration, so as to present lower voltage across the windings, and then run in delta configuration, for full power operation.I'm going to stick with about 25 amperes per phase, full power run mode, unless someone else has something to add, of course.CommentAn added complication is that '40 hp' refers to the output power of the motor. Unless you know the efficiency, you cannot work out the input power. Incidentally, 68 A single phase doesn't work out at 25 A per line for a 3-phase motor!!!!! It works out a little over 39 Aper line, because P = (root 3) x U x I x power factor!

Related questions

What is the current drawn for 1HP load with formula?

You can convert 1hp in to 745watts off power, and using the power formula I=amps(current) P=power(watts) and U=volts so I=P/U if conected to a 230v supply the current would be 3.23amps and 110v would be 6.77amps


Can 36 volts of car battery power a 1hp electric motor?

Depends on the ratings(volts, amps, etc.) Definitely not an AC motor.


How many watt power inverter is required to run a 1hp 110v motor?

Need to know the running amp draw. Starting amps would be useful l too. The average amp draw for a simple 1hp motor is about 7 amps, such as a fan motor. Ohms law says amps times voltage = watts, so 7 amp times 120v=840 watts. Consider that starting amperage is about 1-1/2 times running load, starting watts would be about 1200. You would need about a 1200 watt inverter to run that motor.


How many watts of electrical power equal one horsepower?

746W = 1Hp


How many amps do you need to run a 1 hp electric motor?

One hp is about 750 watts. Power divided by volts equals amps. 750/120=6.25 amps.Answer 2But this answer takes no account of what the voltage is. It makes the assumption that it is 120 volts. But the various mains in Europe run at about 240 volts. And what about other voltages, eg 12 volts from a car battery? You'd need 65 amps in this case - rather like a car starter motor.Answer 3The conversion from watts to hp is indeed 1hp = 746 watts (as stated above), but no motor is 100% efficient, so you will never actually find a 1hp motor that draws only 746 watts. Real-world 1hp motors draw somewhere between 1,000 and 1,500 watts. Also answer #2 is correct, you need to know volts to calculate amps, but both answers 1 and 2 are only applicable for single phase motors, the formula is different for 3-phase motors.Further complicating things, volts times amps actually equals VA (volt-amperes) not watts. You must multiply VA times power-factor to get true watts.So, to get an accurate answer, you must simply consult the nameplate of the chosen motor where the amps are directly listed. If you need an approximation the following formulae will get you close (they assume 1,200 VA per hp):Single Phase:Amps = 1200 / nameplate voltsThree phase:Amps = (1200 / nameplate volts) / 1.73


How many amps does a half horse power motor draw at 220 Volts?

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.


How many amps does a 1.0hp pool pump pull?

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 ?


How many watt are ther in hp?

1hp=745 watt


How many btu are there in 1 horsepower?

1hp = 2544 Btu


How many Hp Is 12000 BTU?

12000BTU is 4.7hp


What is the starting current of a 1hp water pump?

maximum current of a 1hp


How many watts are equal to 1 hp?

1hp = 745.7 watts