# How many amps is a 40 hp motor?

Contents

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

Full-Load Current and Circuit Protection Data for Three-Phase AC Motors

Motor Horsepower Breaker Size
20 230 V 460 V 100 50
25 230 V 460 V 100 50
30 230 V 460 V 125 70
40 230 V 460 V 175 100

## How do you convert HP to amps?

How to Convert Horsepower to Amps

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 25 hp motor draw?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps 3 Phase Amps
115 volt 208 volt
15 46.2
20 59.4
25 74.8

## What wire do you use for 20 amps?

A 20-amp circuit, protected by a 20-amp breaker or fuse, must be served by 12-gauge or 10-gauge wire.

## 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%

## How many amps is 60 horsepower?

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

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60 149 75
75 180 90
100 245 123
125 310 155

## Will 6 gauge wire fit in a 30 amp breaker?

RULES OF THUMB

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”

## How many amps does a 10hp single phase motor draw?

Full-Load Current in Amperes Single-Phase Alternating Current Motors

HP 115V 230V
5 56 28
7-1/2 80 40
10 100 50
The voltages listed are rated motor voltages. The listed currents are for system voltage ranges of 110 to 120 and 220 to 240.