1. What Is The Load Calculation?

The load calculation determines the required capacity for electrical panel layout by considering the maximum phase load with a 25% safety margin. This ensures the panel can handle continuous operation safely.

2. How Does The Calculator Work?

The calculator uses the following formula:

Where:

• \( Max\ Phase\ Load \) — The highest load measured on any single phase (amps)
• \( 1.25 \) — Safety factor for continuous operation

Explanation: The 25% margin accounts for continuous operation and prevents overloading of the electrical panel.

3. Importance Of Load Calculation

Details: Proper load calculation is essential for designing safe electrical systems, preventing overheating, and ensuring compliance with electrical codes.

4. Using The Calculator

Tips: Enter the maximum phase load measured in amps. The value must be greater than 0 for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by 1.25?
A: The 25% margin accounts for continuous loads (3+ hours operation) as required by electrical codes.

Q2: What's considered a continuous load?
A: Any load expected to operate for 3 hours or more, such as lighting, HVAC, or refrigeration.

Q3: How does this affect circuit breaker sizing?
A: The calculated load determines the minimum circuit ampacity, which then informs breaker sizing.

Q4: Are there exceptions to this calculation?
A: Some special equipment may have different requirements - always consult manufacturer specifications.

Q5: How often should load calculations be performed?
A: Whenever adding new loads or modifying existing electrical systems.