1. What is a Wattage Calculator for Portable Generator?

Definition: This calculator estimates the wattage required for a portable generator based on the total load wattage and a safety factor.

Purpose: It helps homeowners, contractors, and event planners determine the appropriate generator size for their power needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_w \) — Required generator wattage (watts)
• \( \Sigma P_{load} \) — Sum of all connected loads (watts)
• \( SF \) — Safety factor (typically 1.2 for residential use)

Explanation: The total load wattage is multiplied by a safety factor to account for startup surges and future expansion.

3. Importance of Proper Generator Sizing

Details: Correct wattage calculation ensures reliable power supply, prevents generator overload, and maximizes fuel efficiency.

4. Using the Calculator

Tips: Enter the total wattage of all devices to be powered and a safety factor (default 1.2). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a safety factor?
A: A multiplier (typically 1.2-1.5) that accounts for startup surges and future power needs.

Q2: How do I find my total load wattage?
A: Sum the wattage of all devices you plan to power simultaneously, including startup surges for motors.

Q3: When should I use a higher safety factor?
A: Use 1.5 for industrial equipment or when expecting significant future power needs.

Q4: Does this include continuous vs peak wattage?
A: Your total load should include the highest expected peak wattage requirements.

Q5: Should I round up the result?
A: Yes, choose a generator with wattage equal to or higher than the calculated value.