What size breaker do I need for a 3 HP motor?

How many amps does a 3hp motor draw?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps 3 Phase Amps
115 volt 575 volt
2 24 2.7
3 34 3.9
5 56 6.1

What size breaker do I need for a 4 hp motor?

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

HorsePower of Main Motor 220 Volts, 1 phase 220 Volts, 3 phase
1 Hp 5.6 Amps 2.8
2 11.2 5.6
3 16.8 8.4
4 22.4 11.2

What size breaker do I need for a 5 hp motor?

A 5hp single phase AC motor has a load current of 28 Amps. So 10GA. wire with a 30 Amp breaker will work.

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) . 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.

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
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Which wire is best for 1.5 HP motor?

Find the correct wire size for your pump.

Cross reference the distance from your pump to the electrical service entrance to determine the correct gauge.
Motor Rating Copper Wire Size
1.5 HP 3 Wire 3182 ft.
1.5 HP 3 Wire 5685 ft.
1.5 HP 2 Wire 3335 ft.

What size breaker do I need for a 15 hp motor?

Full Load Current: Three Phase AC Motors

Motor Horsepower Size Breaker
10 230V 460V 50 30
15 230V 460V 70 40
20 230V 460V 100 50
25 230V 460V 100 50

What size breaker do I need for a 200 hp motor?

What size breaker do I need for a 200 hp motor? So, assuming an inverse time breaker, the 200 hp motor would have a maximum branch circuit OCPD of 240 amps x 250% = 600 amp.

How many amps does a 5 HP 3 phase motor draw?

AC Motor Full Load Amperes

HP 200 Volts 380-415 Volts
3 11 6.1
5 17.5 9.7
7.5 25.3 14
10 32.2 18