## How do I convert HP to amps?

Converting horsepower to amps can be done in a few simple steps, or using this simple formula.

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