1. What is Electric Load Calculation?

Definition: Electric load calculation determines the total power consumption of all electrical devices in a system.

Purpose: Helps in designing electrical systems, selecting appropriate wiring, and ensuring circuit breakers are properly sized.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{total} \) — Total electric load (watts)
• \( P_{device} \) — Power consumption of each individual device (watts)

Explanation: The calculator sums the wattage of all devices to determine the total electrical load.

3. Importance of Electric Load Calculation

Details: Proper load calculation prevents circuit overloads, ensures safety, and helps optimize energy usage.

4. Using the Calculator

Tips: Enter the number of devices, then input each device's wattage. All values must be ≥ 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between watts and volt-amps?
A: Watts represent real power, while volt-amps (VA) represent apparent power. For resistive loads they're equal, but differ for reactive loads.

Q2: Should I include all devices?
A: Yes, include all devices that might operate simultaneously for accurate load calculation.

Q3: How do I find a device's wattage?
A: Check the device label, manual, or use a watt meter. If only amps and volts are listed, multiply them (P = V × I).

Q4: What about devices with variable loads?
A: Use the maximum rated wattage for safety calculations.

Q5: Should I add a safety factor?
A: Yes, electrical codes typically recommend adding 20-25% to the calculated load for safety margins.