power consumption
Level
pending
In a building , there are 10 bulbs of 100W, 5fans of 80W and one AC of 1kW. The voltages of electric mains is 220V . The minimum capacity of the main fuse of building is ????
The answer is 11.
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1 solution
10×10+5×80+1000=VI 2400=220 I I=2400/220 =10.90 = 11A