Solar Generator Sizing Formula:
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The Solar Power Generator Calculator helps determine the appropriate size for a solar generator based on your power needs. It calculates the total wattage required with a safety margin to ensure reliable operation.
The calculator uses the following formula:
Where:
Explanation: The safety margin accounts for power surges, inefficiencies, and future expansion needs.
Details: Correctly sizing your solar generator ensures it can handle your power needs without overloading, while avoiding unnecessary costs from oversizing.
Tips: Enter the wattage for each electrical device you plan to power. Select an appropriate safety factor based on your needs (1.5 for critical systems).
Q1: Why include a safety factor?
A: The safety margin accounts for startup surges (especially with motors), system inefficiencies, and potential future additions.
Q2: What's the difference between 1.2 and 1.5 factors?
A: 1.2 (20%) is for stable loads like lights; 1.5 (50%) is recommended for devices with motors or compressors (fridges, power tools).
Q3: Should I consider battery capacity too?
A: Yes, this calculator determines wattage needs. Runtime depends on battery capacity (measured in watt-hours).
Q4: What about solar panel sizing?
A: Solar panel wattage should typically be 1.5-2 times your generator's capacity to account for varying sunlight conditions.
Q5: How do I find my devices' wattage?
A: Check labels, manuals, or use a wattmeter. For appliances, look for "running watts" (not just "max watts").