1- What is the Pipe earthing?:

Pipe earthing is a safety system which is protected from leakage current. In any equipment, The leakage current is discharged quickly in ground through pipe earthing. It is also protect us from sky lightning.

A GI pipe with many hole is used as earth electrode. It is low cost earthing system. Top side is connected to the funnel for water dropping. Earth wire one side is also connected on top side and other side is connected with equipments or electrical panel.

2- Schematic diagram of Pipe Earthing:

3- Parts of Pipe Earthing:

1- Earth Pit:

Earth pit is the main part of ground where earth electrode is connected to the distribution earth wire or strip.

2- Earth pipe:

Earth pipe is used as earth electrode which is installed below three meters from ground surface.

3- Pipe funnel:

Pipe funnel is used for water filling in ground so that moisture could be maintained.

4- Earthing wire:

Earthing wire is used for current discharging from equipment to earth pit.

4- Installation Procedure of Pipe Earthing:

Pipe earthing is a complete procedure of installation which is described below mentioned points.

• Dig the ground below three meters form ground surface.
• Many holes type GI pipe is installed three meters below from surface.
• Top of the pipe is connected with GI strip or earth wire.
• A funnel is also installed on the top of pipe for filling the water.
• Around the pipe the coal is put then put the salt on above the coal and again put coal and salt continue to till on the 1 feet below ground surface.
• A earth pit one feet square is constructed on the ground surface of earthing.
• Earth pit strip is connected into earth wire or earth single core wire.
• The water is filled through funnel pipe so that the moisture will keep available.

5- Importance of Pipe Earthing:

Earthing is most essential part of electrical system so it has more importance points as per below mentioned.

• Protect any human from electrical shock during leakage current equipment body.
• Protect to the electrical equipment form any short circut before insulation failure.
• protect to the high rise building and electrical system from sky lightning.
• protect to the electrical equipment from fire case.

6- Why is coal and salt is used?

Coal and salt is used in earthpit for increasing moisture of soil and decreasing soil resistivity because moisture is associated between ground and plate electrode for quickly current discharging. The moisture is the important medium of decreasing soil resistivity so that current could be flow quickly . If the moisture is available in good condition then the value of earth resistance will be below two ohm.

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