1. What is Generator Load Current?

The generator load current is the amount of electrical current drawn by the connected load from the generator. It's a critical parameter for sizing generators, circuit breakers, and wiring.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I \) — Load current (amps)
• \( P \) — Load power (watts)
• \( V \) — Voltage (volts)
• \( PF \) — Power factor (unitless, between 0 and 1)

Explanation: The formula accounts for both real power (watts) and reactive power (VARs) through the power factor.

3. Importance of Load Current Calculation

Details: Accurate current calculation ensures proper generator sizing, prevents overload conditions, and helps maintain voltage stability.

4. Using the Calculator

Tips: Enter load power in watts, voltage in volts, and power factor (typically 0.8-1.0 for most applications). All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power (watts) to apparent power (VA). It ranges from 0 to 1, with 1 being ideal.

Q2: Why does power factor affect current?
A: Lower power factor means more current is required to deliver the same amount of real power.

Q3: What's typical power factor for different loads?
A: Resistive loads (heaters) have PF=1, motors typically 0.8-0.9, and electronic loads often 0.6-0.7.

Q4: How does three-phase current differ?
A: For three-phase systems, the formula becomes \( I = \frac{P}{\sqrt{3} \times V \times PF} \).

Q5: What happens if current exceeds generator rating?
A: The generator may overheat, voltage may drop, and protective devices should trip to prevent damage.