# How many amps does a 150 hp motor draw?

Contents

## How do I convert HP to amps?

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.

## How many amps does a 100 hp motor draw?

AC Motor Full Load Amperes

HP 200 Volts 440-480 Volts
60 177 77
75 221 96
100 285 124
125 359 156

## How many amps does a 1.5 hp motor draw at 120 volts?

Amperage will fluctuate depending on several factors. These factors include but are not limited to input voltage, motor rpm, and motor brand. For example a 1.5 HP Baldor motor turning 3450 rpm draws 13.4 amps on 120 volt service.

## What size breaker do I need for a 200 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)
75 96 150
100 125 200
125 156 250
150 180 400

## 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.

## How many amps does a 5 hp motor use?

A 5 HP motor at 230V, 3PH is12.

Using the formula above, multiply 12.4 amps by 10% for a result of 1.24. Add this total to 12.4 for a total of 13.64 amps.

## 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

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

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

## How many amps does a 5 HP single phase motor draw?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps
115 volt 230 volt
5 56 28
7-1/2 80 40
10 100 50

## How much power does a 2 hp motor use?

How many watts does a 2 HP motors have? If a 2 horse power motor is doing 2 horsepower of work then in the load about 1500 Watts of energy is used in the load.

## What is the full load current of a 1 hp motor?

For single phase motors, NEC table 430-148 gives 230 Vac full load current of 8 amps for a 1 HP motor.

## What is the starting current of 1 hp motor?

For a 1 HP 3phase induction motor draws a current =W /V, so 1 HP is equal to 746 watts, or rounded off to 750 watts, so it will be 750 /415 volts =1.7 amperes, approximately and at a powerfactor at unity means 1.

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

Single Phase (230 Volt) – Wire Size Selection Guide*
HP Cable Length
1/2 14 14
3/4 14 14
1 14 12

## 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

## What size breaker do I need for a 15 amp motor?

Use a 12 wire and a 20A breaker. 15A ends are allowed on 20A circuits. 