1. What is a 3-Phase kWh to Amps Calculator?

Definition: This calculator converts energy consumption (kWh) to electrical current (amps) in three-phase power systems.

Purpose: It helps electricians, engineers, and facility managers determine the current draw from known energy usage in three-phase circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I \) — Current in amps
• \( E_{kWh} \) — Energy consumption in kilowatt-hours
• \( V \) — Voltage (line-to-line)
• \( PF \) — Power factor (0-1)
• \( t \) — Time duration in hours

Explanation: The formula converts kWh to watt-hours, then divides by the product of voltage, power factor, square root of 3 (for 3-phase), and time to find current.

3. Importance of 3-Phase Current Calculation

Details: Accurate current calculation is essential for proper circuit sizing, breaker selection, and ensuring electrical system safety and efficiency.

4. Using the Calculator

Tips: Enter energy in kWh, system voltage (default 480V), power factor (default 0.8), and time duration (default 1 hour). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is √3 used in the formula?
A: The square root of 3 (≈1.732) accounts for the phase difference in three-phase power systems.

Q2: What's a typical power factor value?
A: Most industrial systems operate between 0.8-0.95. Motors often have 0.85 PF.

Q3: Can I use this for single-phase systems?
A: No, use our single-phase calculator (remove √3 from the formula).

Q4: How do I find my energy consumption?
A: Check your electricity bill or use a kWh meter to measure usage over time.

Q5: What if my voltage is line-to-neutral?
A: For line-to-neutral measurements, multiply by √3 to get line-to-line voltage first.