1. What is Load Calculation for 200 Amp Panel?

The load calculation determines how much of the 200 amp service panel's capacity is being used based on the total volt-amps of connected loads. This helps ensure the panel is not overloaded.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Total\ VA \) — Sum of all connected loads in volt-amps
• 240 — Standard voltage for residential service
• 200 — Panel amperage rating

Explanation: The equation calculates what fraction of the panel's capacity is being used by the connected loads.

3. Importance of Load Calculation

Details: Proper load calculation prevents panel overload, reduces fire risk, and ensures electrical system safety and code compliance.

4. Using the Calculator

Tips: Enter the total volt-amps of all connected loads. The result shows what fraction of the 200 amp panel's capacity is being used (1.0 = 100% capacity).

5. Frequently Asked Questions (FAQ)

Q1: What's considered a safe load percentage?
A: Most codes recommend keeping continuous loads below 80% of panel capacity (0.8 in calculator results).

Q2: How do I find total VA?
A: Sum the VA ratings of all connected devices (VA = Volts × Amps for each device).

Q3: Does this account for three-phase systems?
A: No, this calculator is for standard 240V single-phase residential service.

Q4: What about motor starting currents?
A: This calculates steady-state load. Motor starting surges require additional consideration.

Q5: When should I upgrade my panel?
A: Consider upgrading if your calculated load regularly exceeds 0.8 (80% of capacity).