IGNOU BEE 2 2018 - Outline the earthing practices and procedures.

Question

Outline the earthing practices and procedures.

28 Mar 2018

Answer :

Word Count : 789

The earthing is of great importance because it protects both the equipment as wells as the persons using them. As the name implies the earthing means that the equipments or installations connected to the earth. The earthing is also called grounding. The resistance of the earth is very low.

So when the equipment or installation develops some fault then the current will take the path through the earth and the equipment will remain safe. Therefore all power supply systems, consumer installations and electrical appliances are grounded as per Indian electricity rules 1972.

Suppose now that the insulation of the line conductor inside goes bad and v conductor comes in contact with the metal casing etc. If the appliance is itself t on a wooden table, the casing would then be at the same potential as the inductor i.e. it would now become live.

If now by chance some person touches the body of the equipment and that erosion is not properly insulated then the current will flow through his body and he may

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