Electrical Load Calculator (Multiple Appliances)

Definition of Electrical Load

Electrical Load is the total power consumed by all electrical appliances in a space. Calculating electrical load is essential to ensure safe electrical design, proper breaker sizing, prevent overloading, and estimate energy consumption.

Formula

Formula:
Total Load (W) = (Fans × 75) + (Lights × 15) + (Computers × 200) + (Refrigerators × 300) + (TVs × 150) + (AC × 1500) + (Microwave × 1200) + (Water Heater × 3000) + (Washing Machine × 500) + (Iron × 1000) + (Laptop × 50) + (Printer × 100)
Total Load (kW) = Total Load (W) ÷ 1000

Example Calculation

2 Fans, 5 Lights, 2 Computers, 1 Refrigerator, 1 TV, 1 AC, 1 Microwave, 1 Water Heater:
Total Load = 2×75 + 5×15 + 2×200 + 1×300 + 1×150 + 1×1500 + 1×1200 + 1×3000 = 6995 W
Total Load in kW = 6.995 kW ✅

Frequently Asked Questions

Why calculate electrical load?

To select correct cables, circuit breakers, and avoid overloading while ensuring safety.

Can I add more appliance types?

Yes, you can extend the calculator by adding more appliances with their wattage.

Does usage hours affect calculation?

Yes, for daily energy consumption in kWh, multiply total kW by hours of use.