Inverter Size Calculator

Formula

The formula to calculate the Inverter Size is:

\[ \text{Inverter Size} = \frac{\text{Total Wattage} \cdot \text{Safety Factor}}{\text{Efficiency}} \]

Where:

\( \text{Inverter Size} \) is the required size of the inverter in watts
\( \text{Total Wattage} \) is the sum of the wattage ratings of all the devices connected to the inverter
\( \text{Safety Factor} \) accounts for variations in power consumption and ensures the inverter can handle peak loads. It is typically between 1.2 and 1.5
\( \text{Efficiency} \) is the efficiency rating of the inverter, expressed as a decimal

What is Inverter Size?

Inverter size refers to the maximum amount of power that an inverter can handle and convert from DC (Direct Current) to AC (Alternating Current). It is typically measured in watts or kilowatts. The size of the inverter you need depends on the total power consumption of the devices you want to run. For instance, if you want to power a 100-watt light bulb and a 500-watt refrigerator, you would need an inverter that is rated for at least 600 watts.

Example Calculation

Let's assume the following values:

Total Wattage = 1000 W
Safety Factor = 1.25
Inverter Efficiency = 0.9

Using the formula to calculate the Inverter Size:

\[ \text{Inverter Size} = \frac{1000 \cdot 1.25}{0.9} = \frac{1250}{0.9} \approx 1389 \text{ W} \]

The required inverter size is approximately 1389 W.