**Contents**show

## What size breaker do I need for a 150 hp motor?

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

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

75 | 230 V 460 V | 300 200 |

100 | 230 V 460 V | 400 200 |

125 | 230 V 460 V | 500 250 |

150 | 230 V 460 V | 600 300 |

## How many amps does a 125 hp motor draw?

Full-Load Amps: Three-Phase Alternating-Current Motors

Induction-Type Squirrel Cage and Wound Rotor (Amperes) | ||
---|---|---|

HP | 115 Volts | 200 Volts |

75 | — | 221 |

100 | — | 285 |

125 | — | 359 |

## How do I convert HP to amps?

How to use the hp to amps calculator?

- Estimate the power in watts (the nominator of the expression), 1 hp * 746 = 746 W ;
- Evaluate the product in the denominator, 200 V * 0.92 * 90% = 165.6 V . …
- Make a fraction of these numbers and find the final horsepower to amps value, 746 / 165.6 = 4.505 A .

## How do you calculate amps from motor HP?

How to Convert Horsepower to Amps

- Amps = (Horsepower × 746) ÷ Efficiency ÷ Volts.
- Watts = Horsepower × 746.
- Watts = Watts η
- Amps = Watts ÷ Volts.
- Amps = HP × 746 V × η × PF.

## How many amps does a motor draw?

AMP DRAW BASED ON HORSEPOWER

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

115 volt | 230 volt | |

1 | 16 | 4.2 |

1-1/2 | 20 | 6 |

2 | 24 | 6.8 |

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

Example: A 5 HP motor at 230V, 3PH is12. 4 amps.

## How many amps does a 250 hp motor draw?

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 |
---|---|---|

150 | 360 | 180 |

200 | 480 | 240 |

250 | 580 | 290 |

300 | 696 | 348 |

## 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?

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

## How many HP is a 3 amp motor?

Common Amps to Horsepower Conversions

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

2 A | .29 HP | 120 V |

3 A | .43 HP | 120 V |

4 A | .58 HP | 120 V |

5 A | .72 HP | 120 V |

## 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.