**Contents**show

HP | 1 Phase Amps | 3 Phase Amps |
---|---|---|

115 volt | 208 volt | |

10 | 100 | 30.8 |

15 | — | 46.2 |

20 | — | 59.4 |

## What size breaker do I need for a 10 hp motor?

Full Load Current: Three Phase AC Motors

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

5 | 230V 460V | 15 15 |

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

10 | 230V 460V | 50 30 |

15 | 230V 460V | 70 40 |

## How do I convert HP to amps?

**Convert to Amps**

- Amps = 1 HP × 746 W120 V × .9.
- Amps = 746120 V × .9.
- Amps = 746108.

## How many amps does a 12v 1hp motor draw?

0.2 HP = 17 amperes. 0.5 HP = 42 amperes. 1.0 HP = **85 amperes**.

## How do you calculate amps on a motor?

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 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 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 many amps does a 1 HP pool pump draw?

1 HP is 746 watts x 1.5 HP = 1,119 watts. 1,119watts ÷ 120volts= **9.325 amps**.

## How much current would a 1.5 HP 240v motor draw?

The 1.5 HP Baldor motor that turns at 1725 will draw **18 amps** according to its name plate.

## How much current can a 5 hp motor take?

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. |

## 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.

## How many amps will a motor draw?

Amps = (Horsepower × 746) ÷ Efficiency ÷ Volts. Watts = Horsepower × 746. Watts = Watts ÷ Efficiency. Amps = Watts ÷ Volts.

…

How many amps does a hp motor draw?

Horsepower | Amps | Voltage |
---|---|---|

1 HP | 6.91 A |
120 V |

1.25 HP | 8.63 A | 120 V |

1.5 HP | 10.4 A | 120 V |

## How many amps does a 40 hp motor draw?

AC Motor Full Load Amperes

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

20 | 62.1 | 27 |

25 | 78.2 | 34 |

30 | 92 | 40 |

40 | 120 |
52 |