1. What is a Genset kVA to Amp Calculator?

Definition: This calculator converts generator kVA rating to amperage for three-phase electrical systems.

Purpose: Helps electrical engineers and technicians determine the current output of generators for proper equipment sizing and protection.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I \) — Current (amps)
• \( kVA \) — Generator apparent power (kilovolt-amperes)
• \( V \) — Line voltage (volts)
• \( \sqrt{3} \) — Constant for three-phase systems (≈1.732)

Explanation: Converts kVA to watts (by multiplying by 1000) then divides by the three-phase voltage to get current.

3. Importance of Current Calculation

Details: Accurate current calculation ensures proper wire sizing, circuit breaker selection, and prevents generator overload.

4. Using the Calculator

Tips: Enter the generator kVA rating and system voltage (default 480V). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula only for three-phase systems?
A: Yes, this specific formula is for three-phase. Single-phase systems use a different formula (I = kVA × 1000 / V).

Q2: Why multiply kVA by 1000?
A: To convert kilovolt-amperes (kVA) to volt-amperes (VA) since 1 kVA = 1000 VA.

Q3: What's a typical voltage for generators?
A: Common voltages include 208V, 240V, 480V, or 600V, depending on application.

Q4: Does this account for power factor?
A: No, kVA is apparent power which already includes power factor considerations.

Q5: How do I find my generator's kVA rating?
A: Check the generator nameplate or manufacturer specifications.