**Contents**show

## How many horsepower is a 4.5 amp motor?

Common Horsepower to Amps Conversions

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

3.5 HP | 24.2 A | 90% |

4 HP | 27.6 A | 90% |

4.5 HP | 31.1 A |
90% |

5 HP | 34.5 A | 90% |

## How is motor power factor calculated?

Going one step further, Power Factor (PF) is the ratio of working power to apparent power, or the formula **PF = kW / kVA**.

## How is electric motor efficiency calculated?

Typical Motor Efficiency Values: Efficiency is **simply output (useful) power divided by input power**, with the difference being losses due to imperfections in design and other inevitabilities.

## How is HP calculated?

The equation to calculate horsepower is simple: **Horsepower = Torque x RPM / 5,252.**

## How is motor rating calculated?

**Multiply the motor voltage by the full-load current**. The result is in watts. Divide watts by 1,000 to give kilowatts. For example, 230 volts x 20 amps = 4,600 watts; 4,600 watts divided by 1000 = 4.6 kilowatts.

## How many horsepower is 1000cc?

How many hp is 1000 cc? A 1000 cc engine is approximately **67 horsepower**. This is not a perfect conversion because cc’s are a measurement of an engine’s displacement whereas horsepower is for its power.

## How many amps is a 50 hp motor?

AC Motor Full Load Amperes

HP | 200 Volts | 208 Volts |
---|---|---|

40 | 120 | 114 |

50 | 150 |
143 |

60 | 177 | 169 |

75 | 221 | 211 |

## 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 is the formula to convert HP to amps?

Knowing that we can write hp to amps formula for direct current (DC) as: **I = P * 746 / (V * η) .**