Calculate the amps used by dividing the wattage by the voltage. For example a 500-watt motor — running on 50 volts — will draw 10 amps. A motor with the same wattage — running on 20 volts — will use 25 amps. This is the theoretical number of amps used by the motor.
How many amps is a 1 hp motor?
AMP DRAW BASED ON HORSEPOWER
| HP | 1 Phase Amps | 3 Phase Amps |
|---|---|---|
| 115 volt | 230 volt | |
| 1/2 | 9.8 | 2.2 |
| 3/4 | 13.8 | 3.2 |
| 1 | 16 | 4.2 |
How many amps does a 3 HP 240 volt motor draw?
AC Motor Full Load Amperes
| HP | 200 Volts | 220-240 Volts |
|---|---|---|
| 2 | 7.8 | 6.8 |
| 3 | 11 | 9.6 |
| 5 | 17.5 | 15.2 |
| 7.5 | 25.3 | 22 |
How do I know what AMP my electric motor is?
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 5 hp motor draw?
Example: A 5 HP motor at 230V, 3PH is12. 4 amps.
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.
How many amps does a 1.5 hp motor use?
Common Horsepower to Amps Conversions
| Horsepower | Amps | Efficiency |
|---|---|---|
| .75 HP | 5.18 A | 90% |
| 1 HP | 6.91 A | 90% |
| 1.25 HP | 8.63 A | 90% |
| 1.5 HP | 10.4 A | 90% |
What size breaker do I need for a 15 amp motor?
A 12 wire and a 20A breaker is needed. 15A ends can be used on 20A circuits.
What size breaker do I need for a 30 amp motor?
Full-Load Current and Circuit Protection Data for Three-Phase AC Motors
| Motor Horsepower | Breaker Size | |
|---|---|---|
| 15 | 230 V 460 V | 70 40 |
| 20 | 230 V 460 V | 100 50 |
| 25 | 230 V 460 V | 100 50 |
| 30 | 230 V 460 V | 125 70 |
What size breaker do I need for a 3 HP motor?
A 3 HP will be about 18amps. the circuit breaker for the 13 amps should be 20 amps. For the 3 HP the breaker should be 30 amps .
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 37 kW motor draw?
Three Phase Motors
| MOTOR RATING | HP | APPROX. F.L.C. AT LINE VOLTAGE |
|---|---|---|
| 18 kW | 25 | 67 |
| 22 kW | 30 | 74 |
| 30 kW | 40 | 99 |
| 37 kW | 50 | 130 |
How much power does a 2 hp motor use?
typical electricity consumption is 746 watts per single Horse-power. so 2 HP = 1.48 Kw per hour of operation.
What is full load amps on a motor?
Full Load Amps, or F.L.A., represents the amount of current the motor is designed to draw at the rated horsepower. In the example nameplate, this means that when the motor is running under a full load at 230 volts, we can expect it to draw 5.4 amps.
How much current does a motor draw?
Calculate the amps used by dividing the wattage by the voltage. For example a 500-watt motor — running on 50 volts — will draw 10 amps. A motor with the same wattage — running on 20 volts — will use 25 amps. This is the theoretical number of amps used by the motor.
How many amps does a 3 phase motor draw?
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 |
|---|---|---|
| 1.5 | 4.7 | 2.4 |
| 2 | 6 | 3.0 |
| 3 | 9 | 4.5 |
| 5 | 15 | 7.5 |