RV Generator Size Calculator

Generator Size Formula:

\[ P_{kW} = \frac{\Sigma(P_{load})}{1000} \times SF \]

Generator Size (kW):

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1. What is an RV Generator Size Calculator?

Definition: This calculator estimates the required generator size in kilowatts based on your total electrical load and a safety factor.

Purpose: It helps RV owners and campers determine the appropriate generator capacity for their power needs.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{kW} = \frac{\Sigma(P_{load})}{1000} \times SF \]

Where:

\( P_{kW} \) — Generator size (kilowatts)
\( \Sigma(P_{load}) \) — Total electrical load (watts)
\( SF \) — Safety factor (typically 1.2 for RVs)

Explanation: The total wattage is converted to kilowatts (divided by 1000) then multiplied by a safety factor to account for startup surges and future needs.

3. Importance of Proper Generator Sizing

Details: Correct generator sizing ensures reliable power supply, prevents overload situations, and improves fuel efficiency.

4. Using the Calculator

Tips: Enter the total wattage of all appliances you plan to run simultaneously and a safety factor (default 1.2). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why do we need a safety factor?
A: The safety factor accounts for startup power surges (especially with motors) and potential future power needs.

Q2: What's a typical safety factor for RVs?
A: Most RV applications use 1.2 to 1.5, with 1.2 being common for standard loads.

Q3: How do I find my total load?
A: Add up the wattage of all appliances you plan to run simultaneously. Check appliance labels or manuals for wattage.

Q4: Should I include air conditioning in my calculation?
A: Yes, especially if you'll be running it with other appliances. Note that AC units have high startup wattage.

Q5: Does this include battery charging needs?
A: No, if you need to charge batteries while running other appliances, add your charger's wattage to the total load.