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

Contents

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

Full Load Current: Three Phase AC Motors

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

HP 110-120 Volts
1/8 3.8 1.9
1/6 4.4 2.2
1/4 5.8 2.9
1/3 7.2 3.6

## How do you calculate amps in a 3 phase circuit?

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.

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

For three-phase, full load current for the resistive load is equal to the three-phase power divided by 1.732 times of voltage.

## How many HP is 15 amps?

Common Amps to Horsepower Conversions

Amps Horsepower Efficiency
15 A 2.17 HP 90%
20 A 2.9 HP 90%
25 A 3.62 HP 90%
30 A 4.34 HP 90%

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

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. It wouldn’t hurt anything to run 30amp circuits if you so choose, but it’s overkill.

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## How many amps does a 3 hp submersible pump draw?

Re: Amp draw on a 3/4HP pump

Running amps will be 6 to 8 amps.