The formula to calculate the starting wattage is:
\[ \text{Starting Wattage} = (\text{LRA} \times 0.70) \times (\text{Voltage} \times 0.70) \]
To calculate the true starting wattage of your air conditioner, you need to adjust for the voltage drop that occurs when using a generator. Large motors like those found in your AC can temporarily tolerate up to a 30% drop in voltage. When the voltage drops at the compressor, so does the current draw.
Let's assume the following values:
Step 1: Adjust the current and voltage:
\[ \text{Adjusted Current} = 90 \times 0.70 = 63 \text{ amps} \]
\[ \text{Adjusted Voltage} = 240 \times 0.70 = 168 \text{ volts} \]
Step 2: Calculate the starting wattage:
\[ \text{Starting Wattage} = 63 \times 168 = 10,584 \text{ watts (10.58 kW)} \]
Therefore, the starting wattage for the air conditioner is approximately 10.58 kW.
