1. What is the Voltage To Horsepower Formula?

The voltage to horsepower formula calculates mechanical power output from electrical input parameters. It converts electrical power (voltage and current) to mechanical horsepower, accounting for motor efficiency.

2. How Does the Calculator Work?

The calculator uses the horsepower formula:

Where:

• \( V \) — Voltage (volts)
• \( I \) — Current (amps)
• \( E \) — Efficiency (decimal, 0-1)
• 746 — Conversion factor from watts to horsepower

Explanation: The formula calculates electrical power (V × I), applies the efficiency factor to get mechanical power output, then converts watts to horsepower (1 HP = 746 watts).

3. Importance of Horsepower Calculation

Details: Accurate horsepower calculation is essential for motor selection, power system design, energy efficiency analysis, and mechanical system sizing in various industrial and automotive applications.

4. Using the Calculator

Tips: Enter voltage in volts, current in amps, and efficiency as a decimal between 0 and 1. All values must be valid positive numbers with efficiency between 0-1.

5. Frequently Asked Questions (FAQ)

Q1: Why is 746 used in the formula?
A: 746 watts equals 1 horsepower, so this conversion factor translates electrical power (watts) to mechanical power (horsepower).

Q2: What is typical motor efficiency?
A: Electric motor efficiency typically ranges from 70-95% (0.7-0.95 decimal), depending on motor type, size, and load conditions.

Q3: Can this formula be used for AC and DC motors?
A: For DC motors, use directly. For AC motors, power factor should be considered for accurate calculations.

Q4: What if I have three-phase power?
A: For three-phase systems, the formula becomes: HP = (√3 × V × I × E × PF) / 746, where PF is power factor.

Q5: How accurate is this calculation?
A: The calculation provides a theoretical estimate. Actual horsepower may vary due to motor design, operating conditions, and measurement accuracy.