Question

(a) What current is taken by a 3 kW electric geyser working on 240 V mains?
(b) What size fuse should be used in the geyser circuit?

Answer 1

Explanation:

(a) According to the question, the power of an electric geyser = 3kW = 3000 W

Voltage, V = 240 V.  

We have to calculate the current for the electric geyser.

So, as we know, P = VI

Now current,

Therefore, 12.5 A of current is taken by a 3 kW electric geyser working on 240 V mains.  

(b) A 13 A of the fuse is required to be used in the geyser circuit.

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