* Voltage: The voltage of the power supply significantly affects the current draw. A 5 HP motor operating on 120 volts will draw a much different current than a 5 HP motor operating on 480 volts.
* Efficiency: The motor's efficiency (how much of the input power is converted to useful work) influences current draw. A more efficient motor will draw less current for the same horsepower output.
* Load: The amount of load on the motor also affects current draw. A motor running at full load will draw more current than one running at a lighter load.
To find the amps drawn by a 5 HP motor, you need:
1. Voltage: What is the voltage of the power supply?
2. Efficiency: What is the motor's efficiency (often given as a percentage)?
3. Load: Is the motor running at full load, partial load, or no load?
Here's a general formula to calculate the approximate current draw (assuming a single-phase motor):
```
Amps = (Horsepower * 746) / (Voltage * Efficiency)
```
Example:
* 5 HP motor
* Voltage = 240 volts
* Efficiency = 80%
```
Amps = (5 * 746) / (240 * 0.8)
Amps ≈ 19.4 amps
```
Important Note: This is just an approximation. Always consult the motor's nameplate or manufacturer's specifications for the most accurate current draw information.