1. What is the Power Formula?

The power formula (P = I × V × PF) calculates electrical power in watts from current (amperes), voltage (volts), and power factor (unitless). It's essential for determining the output power of generators and electrical systems.

2. How Does the Calculator Work?

The calculator uses the power formula:

Where:

• \( I \) — Current in amperes
• \( V \) — Voltage in volts
• \( PF \) — Power factor (unitless)
• \( P \) — Power in watts

Explanation: The formula multiplies current by voltage and power factor to determine the real power output of a generator or electrical system.

3. Importance of Power Calculation

Details: Accurate power calculation is crucial for sizing generators, determining electrical system capacity, ensuring proper equipment operation, and calculating energy consumption.

4. Using the Calculator

Tips: Enter current in amperes, voltage in volts, and power factor (between 0 and 1). All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor and why is it important?
A: Power factor represents the ratio of real power to apparent power. It's important because it affects the efficiency of power transmission and the actual usable power from a generator.

Q2: What are typical power factor values?
A: Power factor typically ranges from 0 to 1, with 1 being ideal. Most electrical systems operate between 0.8 and 0.95 power factor.

Q3: Can this calculator be used for DC systems?
A: For DC systems, power factor is always 1, so the formula simplifies to P = I × V.

Q4: How does generator sizing relate to this calculation?
A: Generator sizing requires knowing the total power demand, which this calculator helps determine based on current draw, voltage, and power factor.

Q5: What's the difference between real power and apparent power?
A: Real power (watts) is the actual power consumed, while apparent power (VA) is the product of voltage and current. The power factor relates these two values.