Convert 3 Phase Watts To Amps Calculator

Three Phase Power Formula:

\[ I = \frac{W}{V \times \sqrt{3} \times PF} \]

Current (I):

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1. What is Three Phase Power Calculation?

Three phase power calculation is used to determine the current (amps) in a three phase electrical system based on power (watts), voltage (volts), and power factor. This is essential for proper electrical system design and load management.

2. How Does the Calculator Work?

The calculator uses the three phase power formula:

\[ I = \frac{W}{V \times \sqrt{3} \times PF} \]

Where:

\( I \) — Current in amperes (amps)
\( W \) — Power in watts
\( V \) — Voltage in volts
\( PF \) — Power factor (dimensionless, 0-1)
\( \sqrt{3} \) — Approximately 1.732 (dimensionless)

Explanation: The formula calculates the current flowing in a three phase system by dividing the power by the product of voltage, square root of 3, and power factor.

3. Importance of Three Phase Current Calculation

Details: Accurate current calculation is crucial for proper circuit breaker sizing, wire selection, transformer specification, and overall electrical system safety and efficiency in three phase systems.

4. Using the Calculator

Tips: Enter power in watts, voltage in volts, and power factor (0-1). All values must be valid (watts > 0, voltage > 0, 0 < PF ≤ 1).

5. Frequently Asked Questions (FAQ)

Q1: What is power factor and why is it important?
A: Power factor is the ratio of real power to apparent power. It's important because it affects the efficiency of power transmission and the actual current drawn by equipment.

Q2: When should I use this three phase calculation?
A: Use this calculation for balanced three phase AC systems commonly found in industrial and commercial electrical installations.

Q3: What is the significance of √3 in the formula?
A: √3 (approximately 1.732) accounts for the phase relationship between the three phases in a balanced three phase system.

Q4: Can this calculator be used for single phase systems?
A: No, this calculator is specifically for three phase systems. Single phase calculations use a different formula without the √3 factor.

Q5: What are typical power factor values?
A: Power factor typically ranges from 0.7 to 1.0. Resistive loads have PF near 1.0, while inductive loads (motors, transformers) have lower power factors.