1. What is Full Load Current?

Full Load Current (FLC) is the maximum current drawn by an electrical motor when operating at its rated power and voltage. It's a critical parameter for motor protection, circuit design, and equipment selection.

2. How Does the Calculator Work?

The calculator uses the FLC formula:

Where:

• \( kW \) — Power in kilowatts
• \( V \) — Voltage in volts
• 1000 — Conversion factor (kW to watts)

Explanation: The formula converts kilowatts to watts (multiplying by 1000) and then divides by voltage to calculate current using the basic power formula P = V × I.

3. Importance of FLC Calculation

Details: Accurate FLC calculation is essential for proper circuit breaker sizing, wire selection, motor protection device setting, and ensuring electrical system safety and efficiency.

4. Using the Calculator

Tips: Enter power in kilowatts and voltage in volts. Both values must be positive numbers. The calculator will compute the full load current in amperes.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply kW by 1000?
A: The multiplication converts kilowatts to watts since the basic power formula uses watts (P = V × I where P is in watts).

Q2: Is this formula for AC or DC circuits?
A: This formula works for both AC and DC circuits when calculating full load current from power and voltage.

Q3: What about power factor for AC motors?
A: This simplified formula assumes unity power factor. For precise AC motor calculations, power factor and efficiency should be considered.

Q4: How accurate is this calculation?
A: It provides a good estimate for basic calculations, but actual motor currents may vary due to efficiency, power factor, and operating conditions.

Q5: What are typical FLC values?
A: FLC varies significantly based on motor size and voltage. Small motors may draw a few amps, while large industrial motors can draw hundreds of amps.