The pipe electrode used for earthing shall not be less than the minimum length requirement of _____.

Earthing

Earthing is the process of transferring and immediate discharge electrical energy to the earth directly through a low-resistance wire.

Earthing is done to avoid people from getting electric shocks and to protect appliances and equipment from getting damaged.

Types of Earthing:

1.) Pipe earthing

• Pipe earthing is a common form of earthing in India that uses an iron electrode to connect with the earth’s electrical conductors.
• The size of the iron electrode depends on the soil moisture and the magnitude of the current.
• The pipe electrode used for earthing shall not be less than 2.5 m in length and 40 mm in diameter.
• The soil’s moisture will decide the depth for the placement of the steel pipe.
• The pipe must be placed 3.75 m from the ground.
• The bottom of the pipe must be surrounded by a mixture of salt and charcoal.
• Generally, 10 kg of salt and 10 kg of charcoal is used.

2.) Plate earthing

• In a plate earthing system, a plate made up of copper with dimensions 60cm x 60cm x 3.18mm is buried.
• The copper plate is buried at a distance of 3 meters from the earth and vertically placed in the ground pit.

3.) Mat earthing

• Mat earthing connects vertical and horizontal electrodes to form a mesh.
• A horizontal electrode represses the current generated due to a massive fault while the vertical electrode dissipates the current into the earth.