## How many amps does a 1.5 hp motor draw?

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

…

How many amps does a hp motor draw?

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

1.5 HP | 10.4 A | 120 V |

## How many amps does a 1.5 hp motor draw at 480 volts?

AC Motor Full Load Amperes

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

3/4 | 3.7 | 1.6 |

1 | 4.8 | 2.1 |

1.5 | 6.9 | 3.0 |

2 | 7.8 | 3.4 |

## How do you calculate amps from motor HP?

The conversion from amps, a measure of electric current, to horsepower, a measure of power output by a motor, can be done using a fairly simple formula. Thus, horsepower is equal to the current in amps times the voltage in volts times the efficiency times the power factor, divided by 746.

## 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 horsepower is 2.5 amps?

Common Horsepower to Amps Conversions

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

1.5 HP | 10.4 A | 90% |

1.75 HP | 12.1 A | 90% |

2 HP | 13.8 A | 90% |

2.5 HP | 17.3 A | 90% |

## How many amps does a 1 HP 3 phase 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 |
---|---|---|

1 | 3.3 | 1.7 |

1.5 | 4.7 | 2.4 |

2 | 6 | 3.0 |

3 | 9 | 4.5 |

## What size breaker do I need for a 40 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) |
---|---|---|

40 | 52 | 100 |

50 | 65 | 100 |

60 | 77 | 150 |

75 | 96 | 150 |

## How much current does a 1 hp motor draw?

AMP DRAW BASED ON HORSEPOWER

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

115 volt | 230 volt | |

1/2 | 9.8 | 4.9 |

3/4 | 13.8 | 6.9 |

1 | 16 | 8 |

## How many watts is a 1 hp motor?

One electric horsepower is equal to exactly 746 watts.

## 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 |

## How do I calculate RPM?

How to Calculate Motor RPM. To calculate RPM for an AC induction motor, you multiply the frequency in Hertz (Hz) by 60 — for the number of seconds in a minute — by two for the negative and positive pulses in a cycle. You then divide by the number of poles the motor has: (Hz x 60 x 2) / number of poles = no-load RPM.

## 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.

## What size wire do I need for a 1 hp motor?

Motors are hot to touch. Provide ample circulation around motor. For example: 1-1⁄2 Hp motor at 115 volts over a distance of 150 feet, use #8 wire. Inrush is the amp consumption of a motor during start-up.

## What size breaker do I need for a 7.5 hp motor?

Re: Wire and breaker size for 7.5 hp motor

You need 50 amp rated wire with a 50-100 amp breaker.