1. What is Electrical Load Calculation?

Definition: This calculator computes the total electrical load in kilowatts (kW) by summing individual loads in watts and converting to kW.

Purpose: Helps electricians, engineers, and homeowners determine total power requirements for proper circuit sizing and energy management.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Total power in kilowatts (kW)
• \( P_{load} \) — Individual load power in watts (W)

Explanation: Each electrical load in watts is divided by 1000 to convert to kilowatts, then all values are summed for the total load.

3. Importance of Load Calculation

Details: Accurate load calculations ensure electrical systems are properly sized, prevent circuit overloads, and improve energy efficiency.

4. Using the Calculator

Tips: Enter up to three load values in watts. The calculator automatically sums them and converts to kilowatts. Leave unused fields blank or zero.

5. Frequently Asked Questions (FAQ)

Q1: Why convert watts to kilowatts?
A: Kilowatts are the standard unit for electrical system sizing and utility billing. 1 kW = 1000 W.

Q2: What's a typical residential load?
A: Most homes have 100-200 amp services (24-48 kW at 240V), but actual loads vary by appliances and usage.

Q3: Should I include all appliances?
A: Include only simultaneous loads. Some appliances (like AC) may not run together.

Q4: How do I find appliance wattage?
A: Check nameplates, manuals, or use a wattmeter. Some common values: LED bulb (10W), fridge (150W), AC (1500W).

Q5: Does this include safety factors?
A: No, for circuit sizing, add 20-25% to the calculated load for safety margins.