# How many amps does a 150 hp motor draw?

Contents

## How many amps does a hp motor draw?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps 3 Phase Amps
115 volt 230 volt
1 16 4.2
1-1/2 20 6
2 24 6.8

## How do you determine a motors full load amp?

The motor FLA calculator uses the following formulas:

1. Single Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × cos ϕ)
2. Single Phase AC Motor FLA (Amperes) = (P [HP] × 746) / (V × cos ϕ × η)
3. Three Phase AC Motor FLA (Amperes) = (P [kW] × 1000) / (V × 1.732 × cos ϕ)

## How many amps does a 3 phase 10 hp motor use?

These are only intended to be guidelines and in all cases the full load amps of the motor nameplate should be used for final calculations.

Here are the Full Load Amp (FLA) values for typical 230VAC and 480VAC 3 phase motors.

3 9 4.5
5 15 7.5
7.5 22 11
10 27 14

## How do you calculate amps on a motor?

Given horsepower and volts, it is possible to calculate amps. The calculation of amps uses Ohm’s Law, which is amps times volts equals watts. Multiply the horsepower by 746 watts. For example, an engine at two horsepower with 230 volts would be calculated as two horsepower times 746 watts, which equals 1492.

## How many amps does a 1.5 HP 220v motor draw?

HP 200 Volts 220-240 Volts
1/2 2.5 2.2
3/4 3.7 3.2
1 4.8 4.2
1.5 6.9 6

## How much current does a motor draw?

Calculate the amps used by dividing the wattage by the voltage. For example a 500-watt motor — running on 50 volts — will draw 10 amps. A motor with the same wattage — running on 20 volts — will use 25 amps. This is the theoretical number of amps used by the motor.

## How many amps does a 1 hp motor draw at 120 volts?

Common Horsepower to Amps Conversions

Horsepower Amps Voltage
.75 HP 5.18 A 120 V
1 HP 6.91 A 120 V
1.25 HP 8.63 A 120 V
1.5 HP 10.4 A 120 V

## How do you find the full load of a motor current?

I= P/(1.732*V*Cos pi)

Here three-phase full load current is equal to the power divided by 1.732 times of line to line voltage and power factor.

## How many amps does a 7.5 kW 3 phase motor draw?

Three Phase Motors

MOTOR RATING HP APPROX. F.L.C. AT LINE VOLTAGE
5.5 kW 7.5 20
7.5 kW 10 27
9.3 kW 12.5 34
10 kW 13.5 37

## How much current does a 3 phase motor draw?

Full Load Current: Three Phase AC Motors

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Motor Horsepower Motor Ampere
1 230V 460 V 4.2 2.1
1-1/2 230V 460V 6.0 3.0
2 230V 460V 6.8 3.4
3 230V 460V 9.6 4.8

## How do you calculate amps on a 3 phase motor?

Divide the power consumption in watts by the line voltage multiplied by the power factor to find the amperage. For three phase circuits the power factor is the square root of 3. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3.