Out of the three fuses with current ratings 5A, 10A, 15A, which one is

1.	Out of the three fuses with current ratings 5A, 10A, 15A, which one is to be connected in a geyser circuit marked 3kW, 220V? Give reason for your answer.
Answer» The current flowing through geyser = (3 x 1000)/220 = 13.63A = 14A. The rating of fuse should be just matching with the maximum current carried by the circuit. So the fuse rating should be of 15A.

Out of the three fuses with current ratings 5A, 10A, 15A, which one is to be connected in a geyser circuit marked 3kW, 220V? Give reason for your answer.

Answer»

The current flowing through geyser

= (3 x 1000)/220 = 13.63A = 14A.

The rating of fuse should be just matching with the maximum current carried by the circuit. So the fuse rating should be of 15A.