What size inverter do you need for a 800watt?

To power an 800-watt appliance, you typically need an inverter with a capacity larger than the appliance's wattage to accommodate surge power during startup. A good rule of thumb is to choose an inverter rated at least 20-25% higher than the continuous wattage; therefore, a 1000-watt inverter would be suitable. Additionally, consider the total wattage of all devices you plan to connect to avoid overloading the inverter.