In conclusion, a 2000 watt inverter draws approximately 16. 67 amps when operating at 120 volts. However, it is essential to consider the efficiency factor, surge power, and the continuous and peak power ratings when using an inverter. . The first thing that comes to mind when you hear “2000 watt amp” is probably a powerful sound system or a heavy-duty inverter that keeps appliances running during a power outage. Thermostatically controlled fan comes on only when needed. The cost is dropping so they are more appealing than ever before. If you have a battery bank connected to your system or your appliance. . But, how much power does a 2000W inverter actually use? To understand the power consumption of a 2000-watt power inverter, it's crucial to first grasp the fundamental concept of wattage. This means a 2000W inverter can run a fridge, TV, laptop, microwave, portable AC, toaster, coffee maker, deep freezer, iron, oven, electric fry pan, and vacuum.