1. What is Electrical Load Calculation?

Electrical load calculation determines the total electrical demand of a building or circuit according to the Canadian Electrical Code. It ensures electrical systems are properly sized and safe for the intended use.

2. How Does the Calculator Work?

The calculator uses the electrical load formula:

Where:

• \( appliance\_watts \) — Total wattage of all appliances (W)
• \( demand\_factors \) — Demand factors applied per Canadian Electrical Code (%)
• \( Load \) — Total electrical load (W)

Explanation: The calculation sums all appliance wattages and applies appropriate demand factors to determine the total electrical load requirement.

3. Importance of Electrical Load Calculation

Details: Proper load calculation is essential for electrical safety, preventing circuit overloads, ensuring code compliance, and designing efficient electrical systems in Canadian buildings.

4. Using the Calculator

Tips: Enter total appliance wattage in watts and demand factors as percentage. All values must be non-negative numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What are demand factors in electrical calculations?
A: Demand factors account for the fact that not all electrical loads operate simultaneously at maximum capacity, allowing for more realistic system sizing.

Q2: How do I determine appliance wattage?
A: Check appliance nameplates, manufacturer specifications, or use standard wattage values from the Canadian Electrical Code tables.

Q3: What is the Canadian Electrical Code requirement for load calculations?
A: The CEC requires load calculations to ensure electrical systems can safely handle the maximum anticipated load with appropriate safety margins.

Q4: When are different demand factors applied?
A: Different demand factors apply to various load types: 100% for first 10kW, reduced percentages for additional loads, and specific factors for heating, motor, and lighting loads.

Q5: Is this calculator suitable for residential and commercial applications?
A: Yes, but specific demand factors and calculation methods may vary between residential, commercial, and industrial applications per CEC requirements.