1. What is Load Current?

Load current is the amount of electric current drawn by an electrical load when connected to a power source. It's a fundamental parameter in electrical circuit analysis and design.

2. How Does the Calculator Work?

The calculator uses the basic power formula:

Where:

• \( I \) — Current in amperes (A)
• \( P \) — Power in watts (W)
• \( V \) — Voltage in volts (V)

Explanation: The formula shows the direct relationship between power and current, with voltage as the denominator.

3. Importance of Current Calculation

Details: Calculating load current is essential for selecting proper wire sizes, circuit breakers, and ensuring electrical systems operate safely within their rated capacities.

4. Using the Calculator

Tips: Enter power in watts and voltage in volts. Both values must be positive numbers. The calculator will compute the current in amperes.

5. Frequently Asked Questions (FAQ)

Q1: What if my power is in kilowatts?
A: Convert kilowatts to watts by multiplying by 1000 before entering the value (1 kW = 1000 W).

Q2: Does this work for AC and DC circuits?
A: This simple formula works for DC circuits. For AC circuits with purely resistive loads, it also applies. For reactive loads, power factor must be considered.

Q3: What are typical current ratings for household circuits?
A: In North America, standard circuits are typically 15A or 20A at 120V. Always check your local electrical codes.

Q4: Why is current calculation important for wiring?
A: Wires have maximum current ratings (ampacity). Exceeding these can cause overheating and fire hazards.

Q5: How does this relate to Ohm's Law?
A: This is essentially a rearrangement of the power formula P=IV. When combined with Ohm's Law (V=IR), you can calculate current in different ways depending on known values.