The same power of electric kettle, air conditioning, microwave oven start instantaneous power difference?
Not the same: electric kettle can be seen as pure resistance device, when starting, instantaneous power and rated power difference is the smallest. The compressor of the air conditioner is an inductive primitive, and the starting instantaneous power is several times higher than the rated power.
A microwave oven is subjected to high voltage through a transformer. It belongs to the inductive devices because of high frequency so at the start of the instantaneous power and the rated power is more.
Distinguishing. But in three appliances, microwave ovens (rated 700W-900W) and air conditioning (rated above 1000) require instantaneous power, and their momentary power is about twice as high as their rated power. The electric kettle doesn't need instantaneous power. The reason is that when the microwave oven and the air conditioner start, it needs to start the current with more than the rated current to drive its internal high voltage device to enter the normal working state. Simply put, microwave and air conditioning machines have high voltage devices that need to be activated. The amount of fuel used to start a car is similar to that of a uniform fuel consumption. In principle, the electric kettle is only a high power consumption (general 1000W - 1500W), just heating with a large amount of electricity, there is no need to start high-voltage devices, the power does not require instantaneous power. (but it is possible to start with power exceeding the rated power)
