1. What is Electric Motor Power?

Electric motor power is the rate at which electrical energy is converted to mechanical energy. It's typically measured in watts (W) or horsepower (HP). The basic formula for DC motor power is P = V × I, where P is power, V is voltage, and I is current.

2. How Does the Calculator Work?

The calculator uses the fundamental power equation:

Where:

• \( P \) — Power in watts (W)
• \( V \) — Voltage in volts (V)
• \( I \) — Current in amperes (A)

Explanation: For AC motors, the calculation may require additional factors like power factor and efficiency, but this calculator provides the basic DC motor power calculation.

3. Importance of Power Calculation

Details: Calculating motor power is essential for proper motor selection, circuit design, and ensuring electrical systems can handle the load without overheating or tripping breakers.

4. Using the Calculator

Tips: Enter the voltage in volts and current in amps. Both values must be positive numbers. The calculator will compute the power in watts.

5. Frequently Asked Questions (FAQ)

Q1: Is this calculator suitable for AC motors?
A: This provides basic power calculation. For AC motors, you would typically need to consider power factor and efficiency as well.

Q2: How do I convert watts to horsepower?
A: 1 horsepower ≈ 746 watts. Divide wattage by 746 to get HP.

Q3: What's typical voltage for electric motors?
A: Common voltages include 12V, 24V, 48V (DC) or 120V, 240V, 480V (AC).

Q4: How does motor efficiency affect power?
A: Efficiency represents what percentage of electrical power converts to mechanical power. A 100W motor with 80% efficiency delivers 80W mechanical power.

Q5: What safety precautions should I take?
A: Always ensure circuit breakers/fuses are properly sized, wiring can handle the current, and motors have adequate cooling.