# How much current does a 1 5 hp motor draw

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## How many amps does a 1.5 hp motor draw?

Watts = Horsepower × 746. Watts = Watts ÷ Efficiency. Amps = Watts ÷ Volts. Amps = (HP × 746) ÷ Efficiency ÷ V.

How many amps does a hp motor draw?

Horsepower Amps Voltage
1.5 HP 10.4 A 120 V

## How many amps does a 1.5 hp motor draw at 480 volts?

HP 200 Volts 440-480 Volts
3/4 3.7 1.6
1 4.8 2.1
1.5 6.9 3.0
2 7.8 3.4

## How do you calculate amps from motor HP?

The conversion from amps, a measure of electric current, to horsepower, a measure of power output by a motor, can be done using a fairly simple formula. Thus, horsepower is equal to the current in amps times the voltage in volts times the efficiency times the power factor, divided by 746.

## What size breaker do I need for a 5 hp motor?

In fact code recommends a 60 amp circuit breaker for a 5 hp 230v motor, but with overload protection.

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## How many horsepower is 2.5 amps?

Common Horsepower to Amps Conversions

Horsepower Amps Efficiency
1.5 HP 10.4 A 90%
1.75 HP 12.1 A 90%
2 HP 13.8 A 90%
2.5 HP 17.3 A 90%

## How many amps does a 1 HP 3 phase motor draw?

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

1 3.3 1.7
1.5 4.7 2.4
2 6 3.0
3 9 4.5

## What size breaker do I need for a 40 hp motor?

Electrical motor wiring data – NEMA amps, starter size, HMCP size for motors ranging 1/2 to 500 hp

Motor HP NEMA amps Motor Circuit Protector type HMCP (ampere)
40 52 100
50 65 100
60 77 150
75 96 150

## How much current does a 1 hp motor draw?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps
115 volt 230 volt
1/2 9.8 4.9
3/4 13.8 6.9
1 16 8

## How many watts is a 1 hp motor?

One electric horsepower is equal to exactly 746 watts.

## What size breaker do I need for a 20 hp motor?

Full Load Current: Three Phase AC Motors

Motor Horsepower Size Breaker
7-1/2 230V 460V 40 30
10 230V 460V 50 30
15 230V 460V 70 40
20 230V 460V 100 50

## How do I calculate RPM?

How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.

## What size breaker do I need for a 3 HP motor?

A 20 amp breaker is all you’d ever need for a 220v 3HP motor.

## What size wire do I need for a 1 hp motor?

Motors are hot to touch. Provide ample circulation around motor. For example: 1-1⁄2 Hp motor at 115 volts over a distance of 150 feet, use #8 wire. Inrush is the amp consumption of a motor during start-up.

## What size breaker do I need for a 7.5 hp motor?

Re: Wire and breaker size for 7.5 hp motor

You need 50 amp rated wire with a 50-100 amp breaker.