1. What is RV Generator Wattage Calculation?

The RV Generator Wattage Calculation helps determine the appropriate generator size needed to power all electrical loads in your RV with a safety margin. Proper sizing ensures reliable operation and prevents overloading.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( P_{total} \) — Total generator wattage required (W)
• \( \sum P_{loads} \) — Sum of all electrical loads (W)
• \( 1.2 \text{ to } 1.5 \) — Safety factor (20% to 50% margin)

Explanation: The safety factor accounts for startup surges, future additions, and ensures the generator isn't running at full capacity continuously.

3. Importance of Proper Generator Sizing

Details: An undersized generator may trip breakers or fail to start motors, while an oversized one is less efficient and more expensive. Proper sizing ensures optimal performance and longevity.

4. Using the Calculator

Tips: Enter wattage for each electrical load you plan to run simultaneously. Choose a safety factor based on your needs (1.2 for basic, 1.5 for heavy or future expansion).

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between running and starting watts?
A: Some appliances (like AC units) require 2-3 times more power to start than to run. The safety factor helps account for this.

Q2: How do I find my appliance wattage?
A: Check appliance labels or manuals. Watts = Volts × Amps for AC devices. For motors, use the higher starting wattage.

Q3: Should I size for all possible loads or just typical use?
A: Size for the maximum simultaneous load you expect, not necessarily everything in your RV at once.

Q4: What safety factor should I choose?
A: 1.2 for light use with minimal motor loads, 1.3-1.5 if you have multiple motors or want expansion room.

Q5: Does generator fuel type affect sizing?
A: No, but propane generators typically produce 10-15% less power than gasoline at higher altitudes.