In a large bullding there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be :

In a large bullding there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fa

1.	In a large bullding there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be :
Answer» `12 `A `14`A `8A` `10A` Solution :`12A` Total power = 40 `xx 15 + 100 xx 5 + 80 xx 5 + 1000` = `600 + 500 + 400 + 1000 ` `therefore VI = 2500` W `therefore I = (2500)/(220) = 11.36`A `therefore I = 12 A `

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In a large bullding there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of the electric mains is 220 V. The minimum capacity of the main fuse of the building will be :

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