Physics
State the function of each of the following in a house circuiting —
(a) kWh meter, (b) main fuse, and (c) main switch
Household Circuits
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Answer
(a) kWh meter — After the company fuse, the cable is connected to a kWh meter. The kWh meter is usually mounted on the front (or outside) wall of the house. The function of kWh meter is to measure the amount of electric energy consumed in kWh so that the electricity bill could be generated accordingly.
(b) Main fuse — It is connected only in the live wire. The main fuse melts in case of heavy electric current and the circuit is broken and thus the appliance is protected and safety is maintained.
(c) Main switch — It is connected in both the live and neutral wires. It is used to break the connections of the live as well as the neutral wires simultaneously from the main supply. This protects the electrical appliances from accidental damage due to electrical faults.
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