# How is electric motor HP calculated?

Contents

## How many horsepower is a 4.5 amp motor?

Common Horsepower to Amps Conversions

Horsepower Amps Efficiency
3.5 HP 24.2 A 90%
4 HP 27.6 A 90%
4.5 HP 31.1 A 90%
5 HP 34.5 A 90%

## How is motor power factor calculated?

Going one step further, Power Factor (PF) is the ratio of working power to apparent power, or the formula PF = kW / kVA.

## How is electric motor efficiency calculated?

Typical Motor Efficiency Values: Efficiency is simply output (useful) power divided by input power, with the difference being losses due to imperfections in design and other inevitabilities.

## How is HP calculated?

The equation to calculate horsepower is simple: Horsepower = Torque x RPM / 5,252.

## How is motor rating calculated?

Multiply the motor voltage by the full-load current. The result is in watts. Divide watts by 1,000 to give kilowatts. For example, 230 volts x 20 amps = 4,600 watts; 4,600 watts divided by 1000 = 4.6 kilowatts.

## How many horsepower is 1000cc?

How many hp is 1000 cc? A 1000 cc engine is approximately 67 horsepower. This is not a perfect conversion because cc’s are a measurement of an engine’s displacement whereas horsepower is for its power.

## How many amps is a 50 hp motor?

IT\'S FUNNING:  Is it illegal to drive a dented car?
HP 200 Volts 208 Volts
40 120 114
50 150 143
60 177 169
75 221 211

## How much current can a 5 hp motor take?

Full-Load Current in Amperes Single-Phase Alternating Current Motors

HP 115V 230V
5 56 28
7-1/2 80 40
10 100 50
The voltages listed are rated motor voltages. The listed currents are for system voltage ranges of 110 to 120 and 220 to 240.

## What is the formula to convert HP to amps?

Knowing that we can write hp to amps formula for direct current (DC) as: I = P * 746 / (V * η) .