Pick the odd one out from the following with respect to a household electrical wiring system.

Refrigerator

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kWh meter

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MCB

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Earth wire

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Solution

The correct option is A Refrigerator
The components most essential in a domestic electrical wiring system are the ones that help in the proper functioning of household appliances, e.g. a safety fuse, the electric (kWh) meter, the MCB, electrical sockets, three-pin plugs, live, neutral, and earth wires. Whereas a home appliance like a TV or a refrigerator, is not the most essential component.

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