An Electrician must understand Electrical Wiring basics such as the Wire Size, Earthing, Electricity Circuits especially for House Wiring, How To Check Earthing, How a Switch Works, from the Electricity Meter all the way to the Consumer Unit. He must understand the difference between Ground and Earthing.

A consumer unit hosts various gadgets that provide protection against several kinds of faults that may arise from outside the home electrical installation or within the house wiring circuit.

These devices are designed specially to stop any damage to the wiring or appliances.

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