**Contents**show

## How many amps does a 5 hp motor draw at 480 volts?

AC Motor Full Load Amperes

HP | 200 Volts | 440-480 Volts |
---|---|---|

3 | 11 | 4.8 |

5 | 17.5 | 7.6 |

7.5 | 25.3 | 11 |

10 | 32.2 | 14 |

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

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**. The same calculations would apply for a single phase motor.

## What size breaker do I need for a 5hp 3 phase motor?

Full Load Current: Three Phase AC Motors

Motor Horsepower | Size Breaker | |
---|---|---|

3 | 230V 460V | 15 15 |

5 | 230V 460V | 15 15 |

7-1/2 | 230V 460V | 40 30 |

10 | 230V 460V | 50 30 |

## How do I convert HP to amps?

Given horsepower and volts, it is possible to calculate amps. The calculation of amps uses Ohm’s Law, which is amps times volts equals watts. **Multiply the horsepower by 746 watts**. For example, an engine at two horsepower with 230 volts would be calculated as two horsepower times 746 watts, which equals 1492.

## What size breaker do I need for a 30 hp motor?

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

Motor Horsepower | Breaker Size | |
---|---|---|

25 | 230 V 460 V | 100 50 |

30 | 230 V 460 V | 125 70 |

40 | 230 V 460 V | 175 100 |

50 | 230 V 460 V | 200 150 |

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

A 5hp single phase AC motor has a load current of 28 Amps. So 10GA. wire with a **30 Amp breaker** will work.

## How many amps is 3 horsepower?

Common Horsepower to Amps Conversions

Horsepower | Amps | Efficiency |
---|---|---|

3 HP | 20.7 A |
90% |

3.5 HP | 24.2 A | 90% |

4 HP | 27.6 A | 90% |

4.5 HP | 31.1 A | 90% |

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

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 |

## How many amps does a 5 HP 3 phase motor draw?

These are only intended to be guidelines and in all cases the full load amps of the motor nameplate should be used for final calculations.

…

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

Motor horsepower | Full load amps 230VAC | Full load amps 460VAC |
---|---|---|

3 | 9 | 4.5 |

5 | 15 |
7.5 |

7.5 |
22 |
11 |

10 | 27 | 14 |

## What size breaker do I need for a 4 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 |