# Best answer: How can you tell the wattage of a motor?

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## How do you find the wattage of a motor?

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.

## What is wattage of a motor?

Electrical motors are rated in horsepower or watt

The old imperial unit horsepower is equal to 746 watts (0.745 kW) or 33000 lb ft per minute (or 550 lb ft per second). The unit of electric power – 1 watt – is equal to the power produced by an electrical current of 1 amp at a potential difference of 1 volt.

## How do you determine wattage?

The formula for calculating wattage is: W (joules per second) = V (joules per coulomb) x A (coulombs per second) where W is watts, V is volts, and A is amperes of current. In practical terms, wattage is the power produced or used per second.

## How many watts is a 5 hp motor?

It is easy to convert HP to watts based on theequivalence of 746 watts per horsepower and arrive at 5 HP =3730 watts.

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## How many watts is a 1 hp motor?

One electric horsepower is equal to exactly 746 watts.

## How do I know how many watts my amp is?

Steps

1. The number of watts is equal to amps multiplied by volts. That’s it! …
2. For example, if the current is 3 amps (3A) and the voltage is 110V, you multiply 3 by 110, to get 330W (watts). The formula is P=3A X 110V = 330 W (with P standing for power).
3. This is why watts are sometimes called volt-amps.

## Does higher watts mean more power?

What does a Watt mean? The Wattage of the light is the amount of energy it takes to produce a certain amount of light. The higher the wattage, the brighter the light, but also the more power it uses.

## How many watts is a 10 hp motor?

So a 10 hp motor will need 7680 watts when operating.

## Is 350 watts enough for an ebike?

In my experience, 350 watts is perfectly fine on flat ground, can hand hills if you pedal along, and have some nice benefits including a quieter motor, lighter weight, and a cheaper price tag. Wattage ratings on electric motors indicate how many watts the motor can use.

## How many watts are in a watt hour?

One Watt hour is equal to one Watt of average power flow over an hour. One Watt over four hours would be four Watt Hours of power. As an example, a 100 Watt light bulb on a 400 Watt Hour battery (like the Yeti 400) would last, on paper, 4 hours.

## How many watts is a kilowatt hour?

One kilowatt hour is equal to one thousand watts sustained for one hour.

## How many amps are in a 1000 watts?

Watts To Amps Table (At 120V)

Watts: Amps (at 120V):
700 Watts to amps 5.83 Amps
800 Watts to amps 6.67 Amps
900 Watts to amps 7.50 Amps
1000 Watts to amps 8.33 Amps

## How many amps is 3 horsepower?

Common Horsepower to Amps Conversions

Horsepower Amps Voltage
3 HP 20.7 A 120 V
3.5 HP 24.2 A 120 V
4 HP 27.6 A 120 V
4.5 HP 31.1 A 120 V

## What is the difference between watts and horsepower?

The main difference between Watt and Horsepower is that the Watt is a SI derived unit of power and Horsepower is a unit of power. … Two common definitions being used today are the mechanical horsepower (or imperial horsepower), which is about 745.7 watts, and the metric horsepower, which is approximately 735.5 watts.

## How many horsepower is 1000w?

Watts to horsepower conversion table

Watts (W) Mechanic horsepower (hp(I)) Metric horsepower (hp(M))
700 W 0.938715 hp 0.951735 hp
800 W 1.072817 hp 1.087697 hp
900 W 1.206920 hp 1.223659 hp
1000 W 1.341022 hp 1.359622 hp 