# How do I know what AMP my motor is?

Contents

## How many amps does a motor use?

AC Motor Full Load Amperes

HP 200 Volts 550-600 Volts
1 4.8 1.7
1.5 6.9 2.4
2 7.8 2.7
3 11 3.9

## How do I know what AMP my HP is?

Converting horsepower to amps can be done in a few simple steps, or using this simple formula.

1. Amps = (Horsepower × 746) ÷ Efficiency ÷ Volts.
2. Watts = Horsepower × 746.
3. Watts = Wattsη
4. Amps = Watts ÷ Volts.
5. Amps = HP × 746V × η × PF.

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

Full Load Current: Three Phase AC Motors

Motor Horsepower Size Breaker
10 230V 460V 50 30
15 230V 460V 70 40
20 230V 460V 100 50
25 230V 460V 100 50

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

How to Calculate How What Size Circuit Breaker a Machine will Need:

HorsePower of Main Motor 220 Volts, 1 phase 220 Volts, 3 phase
1 Hp 5.6 Amps 2.8
2 11.2 5.6
3 16.8 8.4
4 22.4 11.2

## Will a 9V battery power a 12V motor?

It’s possible to run a 12V motor on 9V, but it will run slower and with less Torque.

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## How many amps does a 12V motor use?

0.5 HP = 42 amperes.

## How many watts is a 1 hp motor?

One electric horsepower is equal to exactly 746 watts.

## How many amps does a 1.5 HP well pump draw?

For example a 1.5 HP Baldor motor turning 3450 rpm draws 13.4 amps on 120 volt service.

## What size breaker does a motor need?

You must size the conductors at 125% of the motor FLC [430.22(A)]. You must size the overloads no more than 115% to 125% of the motor nameplate current rating, depending on the conditions [430.32(A)(1)].

## What is full load amps on a motor?

Full Load Amps, or F.L.A., represents the amount of current the motor is designed to draw at the rated horsepower. In the example nameplate, this means that when the motor is running under a full load at 230 volts, we can expect it to draw 5.4 amps.

## How many amps does a 5 horsepower motor pull?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps 3 Phase Amps
115 volt 208 volt
5 56 16.7
7-1/2 80 24.2
10 100 30.8 