How many amps is a 40 hp motor?

What size breaker do I need for a 40 hp motor?

Full-Load Current and Circuit Protection Data for Three-Phase AC Motors

Motor Horsepower Breaker Size
20 230 V 460 V 100 50
25 230 V 460 V 100 50
30 230 V 460 V 125 70
40 230 V 460 V 175 100

How much electricity does a 40 hp motor use?

This gives a total power of about 40KWH per hour, so the use would be about 40*24KWH = 960KWH per day of use at rated 40HP output power.

How do I convert HP to amps?

How to Convert Horsepower to Amps

  1. Amps = (Horsepower × 746) ÷ Efficiency ÷ Volts.
  2. Watts = Horsepower × 746.
  3. Watts = Wattsη
  4. Amps = Watts ÷ Volts.
  5. Amps = HP × 746V × η × PF.

How many amps does a 25 hp motor draw?


HP 1 Phase Amps 3 Phase Amps
115 volt 208 volt
15 46.2
20 59.4
25 74.8
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What wire do I use for 40 amps?

For a maximum of 40 amps, you’ll need a wire gauge of 8.

What size wire should I use for a 40 amp breaker?

The size wire you need to operate with a 40-amp breaker safely is an 8-AWG wire. It is possible to install a 40-amp circuit breaker on a larger gauge wire such as a 6-AWG wire, but installing it on a smaller gauge wire will violate the code.

How do you calculate amps in a 3 phase circuit?

Divide the power consumption in watts by the line voltage multiplied by the power factor to find the amperage. For three phase circuits the power factor is the square root of 3. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3.

How much power does a 30 hp motor use?

30 HP rating is equivalent to 22.5 KW. Power consumption for 1 hour duration shall be 22.5 KWH.

Which motor consumes more electricity AC or DC?

AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.

How many HP is 15 amps?

Common Amps to Horsepower Conversions

Amps Horsepower Efficiency
15 A 2.17 HP 90%
20 A 2.9 HP 90%
25 A 3.62 HP 90%
30 A 4.34 HP 90%

How many amps does a 1.5 HP 220v motor draw?

The 1.5 HP Baldor motor that turns at 1725 will draw 18 amps according to its name plate.

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How do you calculate amps on a motor?

Given horsepower and volts, it is possible to calculate amps. The calculation of amps uses Ohm’s Law, which is amps times volts equals watts. Multiply the horsepower by 746 watts. For example, an engine at two horsepower with 230 volts would be calculated as two horsepower times 746 watts, which equals 1492.

How many amps does a 37 kW motor draw?

Three Phase Motors

18 kW 25 67
22 kW 30 74
30 kW 40 99
37 kW 50 130

What size breaker do I need for a 21 amp motor?

How to Calculate How What Size Circuit Breaker a Machine will Need:

HorsePower of Main Motor 220 Volts, 1 phase 440 Volts, 3 phase
10 56 14
15 84 21
20 112 28
25 140 35