kW to Amps 3 Phase 208

Current Formula:

\[ I = \frac{P_{kW} \times 1000}{208 \times PF \times \sqrt{3}} \]

Current (Amps):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is kW to Amps 3 Phase 208 Calculator?

Definition: This calculator converts electrical power in kilowatts (kW) to current in amperes (A) for a three-phase system operating at 208 volts.

Purpose: It helps electricians, engineers, and technicians determine the current draw of three-phase equipment at 208V based on power consumption.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ I = \frac{P_{kW} \times 1000}{208 \times PF \times \sqrt{3}} \]

Where:

\( I \) — Current in amperes (A)
\( P_{kW} \) — Power in kilowatts (kW)
\( PF \) — Power factor (unitless, between 0 and 1)
\( 208 \) — Line-to-line voltage (V)
\( \sqrt{3} \) — Constant for three-phase calculations

Explanation: The formula converts kW to watts (×1000), then divides by the product of voltage, power factor, and √3 to get current.

3. Importance of Current Calculation

Details: Proper current calculation ensures correct wire sizing, circuit breaker selection, and prevents electrical system overloads.

4. Using the Calculator

Tips: Enter the power in kW and power factor (default 0.8). Power must be > 0 and power factor between 0.01 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power, typically between 0.7-0.95 for most industrial equipment.

Q2: Why is √3 used?
A: The √3 accounts for the phase difference in three-phase systems (120° between phases).

Q3: What if my voltage is different?
A: Use our other calculators for different voltages (480V, 240V, etc.) or modify the formula.

Q4: What's a typical power factor?
A: Motors typically have 0.8-0.9, lighting 0.95, and heavily inductive loads may be lower.

Q5: Does this work for single-phase?
A: No, use our single-phase calculator for 120V or 240V single-phase systems.