# Question: How do you calculate the horsepower of an electric motor?

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Use this formula to estimate motor horsepower: Horsepower (hp) = Voltage x Amerage x % EFF x power factor x 1.73/746.

## What is the horsepower of an electric motor?

Electrical motors are rated in horsepower or watt

The old imperial unit horsepower is equal to 746 watts (0.745 kW) or 33000 lb ft per minute (or 550 lb ft per second). The unit of electric power – 1 watt – is equal to the power produced by an electrical current of 1 amp at a potential difference of 1 volt.

## How do you calculate the power of a motor?

By taking the voltage and multiplying it by the associated current, the power can be determined. A watt (W) is a unit of power defined as one Joule per second. For a DC source the calculation is simply the voltage times the current: W = V x A.

2.17 HP

3600 RPM

## Is Electric HP the same as gas HP?

3 hp electric = 5 hp gas. That’s about right. The reason is, an electric motor develops shaft torque much faster than a combustion engine can. The engine must be over sized then (in comparison) to provide accelerating torque, even if it needs less once operating.

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## What is the formula for motor speed?

Therefore, for a 60-Hz system, the formula would be: 60 x 60 x 2 = 7,200 no-load rpm Ã· number of poles. For a 50-Hz system, the formula would be: 50 x 60 x 2 = 6,000 no-load rpm Ã· number of poles.

## What is 120 in motor speed formula?

The equation for calculating synchronous speed is: S = 120 f/P speed = constant (120) times frequency of power source (60 Hz) divided by number of poles used in the motor (P). Where does the 120 come from and what units does it have? There is RPM on one side and Cycles/second divided by #of poles on the other.

## How many amps is 3 horsepower?

Here are the Full Load Amp (FLA) values for typical 230VAC and 480VAC 3 phase motors.Motor horsepowerFull load amps 230VACFull load amps 460VAC1.54.72.4263.0394.55157.5Ещё 17 строк16 мая 2020 г.

## How many HP is a 3.5 amp motor?

Common Horsepower to Amps ConversionsHorsepowerAmpsVoltage2 HP13.8 A120 V2.5 HP17.3 A120 V3 HP20.7 A120 V3.5 HP24.2 A120 VЕщё 11 строк

## What size breaker do I need for a 2 hp motor?

How to Calculate How What Size Circuit Breaker a Machine will Need:HorsePower of Main Motor220 Volts, 1 phase220 Volts, 3 phase1 Hp5.6 Amps2.8211.25.6316.88.4422.411.2Ещё 11 строк

Rs 4200/piece

2800 Rpm

## What is meant by 1 hp motor?

The horsepower (hp) is a unit in the foot-pound-second ( fps ) or English system, sometimes used to express the rate at which mechanical energy is expended. It was originally defined as 550 foot-pounds per second (ft-lb/s). A power level of 1 hp is approximately equivalent to 746 watt s (W) or 0.746 kilowatt s (kW).

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