How are Plate Earthing & Pipe Earthing done?

Any electrical device that has a metallic body. Earthing is very important to that. It is very necessary to do Earthing in every home office building. How is earthing done? We are going to read this article today.

Earthing is very important in every electrical installation. But how is this Earthing done? In this article, we have explained closely.

What are the four types of earthing?

Mainly 2 types of earthing are done

  1. Plate Earthing
  2. Pipe Earthing

how to do plate earthing?

Plate Earthling
plate earthing diagram

From the name of this type of earthing, we can understand that metal plates are used in it. For plate earthing, copper metal or G.I. key plate is used.

For plate earthing, a 90×90 cm pit is dug up to 3 meters deep in the ground.

What is the thickness of earthing plate?

In that pit 60 cm long × 60 cm wide and 3.15 mm thick copper plate or 60 cm long × 60 cm wide and 6.3 mm thick G.I. The key plate is used as the earth electrode.

Two pipes of diameter 19 mm and 12.7 mm are attached to that plate. A funnel is attached to the upper end of a pipe of diameter 19 mm. One open copper/G.I. The wire is brought out of the ground through a pipe with a diameter of 12.7 mm.

Sand (sand), salt and coal are spread around the earth electrode one layer after another of 15-15 cm. This type of layer is laid up to 90 cm.

After filling the rest of the pit with black soil, normally after 2.5 meters the pipe with earth conductor comes out, where earthing connection is to be done. The pipe which has a funnel on its upper end.

Around that pipe, a 30 cm × 30 cm cement concrete tank is made below the ground level, and it is covered with a lid made of cast iron.

In this way earthing is done by earthing the main switch and earthing conductor from there to the required place.

This type of earthing is done in generating stations and sub-stations. and for huse wiring.

how to do pipe earthing?

Pipe Earthing
pipe earthing diagram

For pipe earthing, a pit 70 cm long, 70 cm wide and 3.75 m deep is made in the ground. 38mm in diameter and 2 meters long a G.I. The pipe is used as earth electrode in that pit.

Holes of 12 mm are made on the entire surface of that pipe. Which are made at a distance of 7.5 cm among themselves. Connect this earth electrode with the help of reducing socket, one of 19mm diameter and one of 12.7mm diameter in two such G.I. Pipes are connected.

A funnel is attached to the upper end of a pipe of diameter 19 mm. Funnels are used to water the earthing. An open conductor earth electrode is connected to the earth lead and brought out through a pipe of 12.7 mm diameter.

Its purpose is that the earth lid should not be damaged from anywhere.

Layer by layer of sand (sand), lime and coal are spread around the earth electrode at an interval of 15-15 cm from the bottom.

The pit above the earth electrode is covered with soil.

The earth conductor, which is taken out of the 12.7 mm diameter pipe, is forwarded to the place where earthing is to be done, through 60 cm below the ground.

A cement concrete tank of size 30×30 cm is made around the funnel. It is covered with a cast iron lid.

This type of wiring is done for low and medium voltage installations.

Why are coal and salt used for earthing?

While earthing, salt and coal are poured around the earth electrode. Because salt absorbs the alkali of the ground. And coal keeps the soil moist. Due to which the conductivity of the ground increases. The conductivity of the ground will be high only then the leakage current will easily go into the ground.

Why is water put in earthing?

The land dries up during the summer season. Due to which the conductivity of Jamim decreases. To increase the moisture in the ground, water is poured through funnels in the earthing. A cast iron cover is placed on the funnel of earthing so that the way of pouring water into the earthing is not blocked.

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