1. What is kW to Amps Conversion?

The kW to Amps conversion calculates the electric current (in amperes) from power (in kilowatts) and voltage, considering the phase system (single or three-phase). This is essential for electrical system design and safety.

2. How Does the Calculator Work?

The calculator uses the electrical power formula:

Where:

• \( I \) — Current in amperes (A)
• \( kW \) — Power in kilowatts
• \( V \) — Voltage in volts
• \( \sqrt{3} \) — Approximately 1.732 (3-phase factor)

Explanation: The formula converts kilowatts to watts (×1000), then divides by voltage. For 3-phase systems, accounts for phase difference with the √3 factor.

3. Importance of Current Calculation

Details: Accurate current calculation is crucial for selecting proper wire sizes, circuit breakers, and ensuring electrical system safety and efficiency.

4. Using the Calculator

Tips: Enter power in kW, voltage in volts, and select phase type. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why different formulas for single and three phase?
A: Three-phase systems have three alternating currents offset by 120°, requiring the √3 factor for accurate power calculation.

Q2: What's the difference between line and phase voltage?
A: In 3-phase, line voltage is between phases, phase voltage is between phase and neutral. The calculator uses line voltage.

Q3: Does power factor affect this calculation?
A: This simple calculation assumes unity power factor (1.0). For reactive loads, additional power factor correction is needed.

Q4: What voltage should I use for home calculations?
A: Typically 120V (US) or 230V (EU) for single-phase, 208V or 480V for three-phase systems.

Q5: How accurate is this calculation?
A: It provides theoretical values. Real-world factors like temperature, wire resistance, and power quality affect actual current.