What size breaker do I need for a 20 amp motor?

How many amps does a 20 hp motor draw?

AC Motor Full Load Amperes

HP 200 Volts 208 Volts
20 62.1 59.4
25 78.2 74.8
30 92 88
40 120 114

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

Can I swap out a 15-amp breaker for a 20 amp?

The answer: It’s possible, but not advisable without an electrician evaluating the situation. You should never just upgrade from a 15-amp breaker to a 20-amp one just because the current one is tripping. Otherwise, you may burn your house down via electrical fire.

What size breaker do I need for a 10hp motor?

For example, the full-load current of a 5 HP motor at 460V is 7.6 Amps. The breaker must be sized for 7.6 * 1.25 = 10 Amps . Therefore, it is good practice to size the breaker at 15 Amps.

How many amps is 3 horsepower?

Common Horsepower to Amps Conversions

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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

How many amps does a 15 hp 3 phase motor draw?

Full-Load Amps: Three-Phase Alternating-Current Motors

Induction-Type Squirrel Cage and Wound Rotor (Amperes)
HP 115 Volts 208 Volts
15 46.2
20 59.4
25 74.8

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.

What size breaker do I need for a 25 amp 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

How many amps does a 10hp motor pull?

AMP DRAW BASED ON HORSEPOWER

HP 1 Phase Amps 3 Phase Amps
115 volt 208 volt
10 100 30.8
15 46.2
20 59.4

What size breaker do I need for a 1.5 hp motor?

Okay, a 1.5 HP motor at 115 volts the Full Load Current (FLC) is 20 amps, (table 430.148 NEC) to figure out short circuit and ground fault protection you take 250% x FLC, so 250% x 20 (FLC) = 50 amps, this is your circuit breaker size.