1 Horsepower is equal to 745.7 watts of electrical power, so in theory a 5HP motor operating at 100% efficiency will consume about 3.728kW of power.

## How many watts does a 5 HP electric motor use?

It is easy to convert HP to watts based on the equivalence of 746 watts per horsepower and arrive at 5 HP = **3730 watts**. However, in practice, motors seldom run at their nameplate current (FLA or Full Load Amperage).

## What size generator do I need to run a 5 hp motor?

A true 5 hp on 220 volts would require 28 amps to run on 220 or 6160 watts so at a minimum I would think **20,000 watt generator**.

## How much current does a 5 hp motor draw?

AMP DRAW BASED ON HORSEPOWER

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

115 volt | 208 volt | |

5 | 56 | 16.7 |

7-1/2 | 80 | 24.2 |

10 | 100 | 30.8 |

## How many watts does a 1 hp electric motor use?

One electric horsepower is equal to exactly **746 watts**.

## How many watts does a motor use?

W is the power consumption in watts. For example, if the electric motor uses 50 amps at 240 volts, the wattage is 50 x 240 x 1.73, or **20,760 watts**. Electricity costs are based on kilowatts (kW), so divide watts by 1000 to convert to kilowatts (20,760 wats/1000 = 20.76 kW). Record the time the motor is in operation.

## What size generator do I need for a 25 hp motor?

Rule of Thumb

Electric Motor Size | Minimum Generator Req’d (KVA) by Starting Method | |
---|---|---|

HP | KW | D.O.L to KVA Size (Note 1) |

15 | 11 | 37.5 |

20 | 15 | 50 |

25 |
19.6 |
60.5 |

## How many watts does a 10 hp electric motor use?

So a 10 hp motor will need **7680 watts** when operating. In one hour the motor will consume 7.680 KWatt hours.

## How many watts makes 1kva?

Originally Answered: How many watts does 1kva equal to? Watts are a unit of power and power equals voltage multiplied by the current. So 1 kva equals 1000 volt amps, meaning volts multiplied by amps, therefore equals **1000 watts**.

## How many amps does a 5 hp 3 phase motor draw?

These are only intended to be guidelines and in all cases the full load amps of the motor nameplate should be used for final calculations.

…

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

3 | 9 | 4.5 |

5 | 15 |
7.5 |

7.5 |
22 |
11 |

10 | 27 | 14 |

## How many amps is 3 horsepower?

Common Horsepower to Amps Conversions

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

3 HP | 20.7 A |
90% |

3.5 HP | 24.2 A | 90% |

4 HP | 27.6 A | 90% |

4.5 HP | 31.1 A | 90% |

## How do I convert hp to amps?

Knowing that we can write hp to amps formula for direct current (DC) as: **I = P * 746 / (V * η)** . As the SI unit of power is the watt, it’s common to convert units before estimating the amperage. A rule of thumb states that you should multiply the power in hp by 746 to get the power in watts.