1. What is the Amp to kW Conversion?

The Amp to kW conversion calculates electrical power in kilowatts from current (amps), voltage, and power factor. It's essential for electrical system design, energy consumption estimation, and equipment sizing.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Voltage in volts (V)
• \( I \) — Current in amperes (A)
• \( PF \) — Power factor (unitless, between 0 and 1)
• 1000 — Conversion factor from watts to kilowatts

Explanation: The formula converts electrical current to power, accounting for voltage and the efficiency represented by the power factor.

3. Importance of Power Calculation

Details: Accurate power calculation is crucial for electrical system design, circuit protection, energy efficiency analysis, and equipment selection.

4. Using the Calculator

Tips: Enter voltage in volts, current in amps, power factor (1 for purely resistive loads), and select single or three-phase. All values must be valid (voltage > 0, current > 0, 0 ≤ PF ≤ 1).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between single-phase and three-phase?
A: Single-phase has two wires (one live, one neutral), while three-phase has three live wires with 120° phase difference, providing more power with less conductor material.

Q2: What is power factor?
A: Power factor (0 to 1) represents the ratio of real power to apparent power. 1 means all power is productive work, lower values indicate reactive power.

Q3: Why multiply by √3 for three-phase?
A: √3 accounts for the phase difference between the three voltage waveforms in a balanced three-phase system.

Q4: What are typical power factor values?
A: Resistive loads (heaters, incandescent lights) have PF=1. Motors typically 0.8-0.9. Computers/electronics often 0.6-0.7.

Q5: Can I use this for DC circuits?
A: Yes, for DC set PF=1 and select single-phase (no phase difference in DC).