kWh to Amps Calculator

Current Formula (Single-Phase):

\[ I = \frac{E_{kWh} \times 1000}{V \times PF \times t} \]

Energy Consumption:

kWh

Voltage:

Power Factor:

Time Duration:

hours

Current (Amps):

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1. What is a kWh to Amps Calculator?

Definition: This calculator converts energy consumption (kWh) to electrical current (Amps) for single-phase AC circuits.

Purpose: It helps electricians, engineers, and homeowners determine the current draw from known energy consumption.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ I = \frac{E_{kWh} \times 1000}{V \times PF \times t} \]

Where:

\( I \) — Current in Amperes (A)
\( E_{kWh} \) — Energy consumption in kilowatt-hours (kWh)
\( V \) — Voltage (V)
\( PF \) — Power Factor (unitless, 0-1)
\( t \) — Time duration in hours (h)

Explanation: The formula converts kWh to watt-hours (×1000), then divides by voltage and power factor to get instantaneous power, and finally divides by time to get average current.

3. Importance of Current Calculation

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

4. Using the Calculator

Tips: Enter energy in kWh, voltage (default 120V), power factor (default 1.0 for resistive loads), and time duration in hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power (0-1). For resistive loads like heaters, it's 1. For motors, typically 0.8-0.9.

Q2: Can I use this for three-phase systems?
A: No, this is for single-phase only. Three-phase requires a different formula.

Q3: Why multiply kWh by 1000?
A: To convert kilowatt-hours to watt-hours (1 kWh = 1000 Wh).

Q4: What's a typical voltage value?
A: 120V for US residential, 230V for European, 240V for some appliances.

Q5: How does time affect the calculation?
A: Longer time periods with the same energy consumption will show lower average current.