An air-conditioner of 3.2 kW power rating is connected to a domestic electric circuit having a current rating of 10 A. The voltage of power supply is 220 V. What will happen when this air-conditioner is switched on? Explain your answer.

Given: P=3.2kW=3200W, Fuse current rating=10 A, V=220 V

We have


3200 = 220 x I

I=14.54 A

The required current is 14.54A and the rated current is 10A for the fuse, so the breakdown will take place.