1. What is Panel Load Calculation?

The panel load calculation determines the existing electrical load on a panel by dividing the measured apparent power (VA) by the voltage (V). This helps assess the current demand on an electrical system.

2. How Does the Calculator Work?

The calculator uses the panel load equation:

Where:

• \( Measured\ VA \) — Measured volt-amps (apparent power)
• \( V \) — Voltage in volts

Explanation: The equation calculates the current load in amperes by dividing the total apparent power by the system voltage.

3. Importance of Panel Load Calculation

Details: Accurate panel load calculation is crucial for electrical system safety, determining if additional loads can be added, and preventing circuit overloads.

4. Using the Calculator

Tips: Enter measured VA (must be > 0) and system voltage (must be > 0). The calculator will compute the load in amperes.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between VA and watts?
A: VA measures apparent power (voltage × current), while watts measure real power. For purely resistive loads, they're equal.

Q2: How often should panel load be calculated?
A: Whenever adding new loads or when electrical system modifications are made.

Q3: What is a safe panel load percentage?
A: Typically 80% of the panel's rated capacity for continuous loads.

Q4: Can this be used for three-phase systems?
A: This calculator is for single-phase systems. Three-phase requires additional calculations.

Q5: What tools measure VA?
A: Power meters or clamp meters with VA measurement capability can measure apparent power.