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                            Earthing, Types of Electrical Earthing & Electrical Grounding
                        
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Earthing, Types of Electrical Earthing & Electrical Grounding

http://www.electricaltechnology.org/2015/05/earthing-and-electrical-grounding-types-of-earthing.html[5/13/2015 10:04:43 AM]

Earthing and Electrical Grounding Installation | A Complete Guide
 Electrical Technology  05/10/2015
 Basic Electrical Fundamentals, EE Instruments/Devices &Components, Electrical Design, Electrical Wiring (Basic for
Home), How To, Protection, Questions/Answers (Electrical), Troubleshooting
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Table of Contents [Hide]

Earthing and Types of Electrical Earthing | Electrical Grounding Installation (Step by Step)
What is Grounding or Earthing?
Need of Earthing or Grounding. Why Earthing is Important?
Different Terms used in Electrical Earthing
POINTS TO BE EARTHED
Components of Earthing System
Size of Earth Continuity Conductor
Earthing Lead or Earthing Joint
Size of the Earthing Lead
Earthing Electrode or Earth Plate
Earth Plate or Earth Electrode Size for Small installation
Methods of Earthing | Types of Earthing

1). Plate Earthing:
2). Pipe Earthing:
3). Rod Earthing
4). Earthing through the Waterman
5). Strip or Wire Earthing:

General method of Earthing / Proper Grounding Installation (Step by Step)
SI specification for Earthing
Dangers Of Not Earthing A Supply System
Electrical Grounding & Earthing….. To be continued…

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Earthing, Types of Electrical Earthing & Electrical Grounding

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Earthing and Types of Electrical Earthing | Electrical
Grounding Installation (Step by Step)

Earthing, Grounding, Methods Of Earthing, Types of Earthing And Is Specifications In Respect To
Earthing Of Electrical Installations

Keep In mind:

We have to updated this post with different and useful articles related to Earthing &
Grounding.

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single post about the story. OR just see the last paragraph of the article. Thanks

Happy learning

What is Grounding or Earthing?
To connect the metallic (conductive) Parts of an Electric appliance or installations to the earth
(ground) is called Earthing or Grounding.

In other words, to connect the metallic parts of electric machinery and devices to the earth plate or
earth electrode (which is buried in the moisture earth) through a thick conductor wire (which has
very low resistance) for safety purpose is known as Earthing or grounding.

To earth or earthing rather, means to connect the part of electrical apparatus such as metallic
covering of metals, earth terminal of socket cables, stay wires that do not carry current to the earth.
Earthing can be said as the connection of the neutral point of a power supply system to the earth so
as to avoid or minimize danger during discharge of electrical energy.

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Size of the Earthing Lead
The size or area of earthing lead should not be less than the half of the thickest wire used in the
installation.

The largest size for earthing lead is 3SWG and the minimum size should not be less than 8SWG. If
37/.083 wire is used or the load current is 200A from the supply voltage, then it is recommended to
use copper strip instead of double earthing lead. The earth lead connection methods is shown in the
above fig.

Note: We will post additional article about Earth Plate size with simple calculations… Stay tune.

Earthing Electrode or Earth Plate
A metallic electrode or plate which is buried in the earth (underground) and it is the last part of the
electrical earthing system. In simple words, the final underground metallic (plate) part of the earthing
system which is connected with earthing lead is called earth plate or earth electrode.

http://www.electricaltechnology.org/wp-content/uploads/2015/05/Earthing-of-Single-Motor-from-Two-Places.png

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Earthing, Types of Electrical Earthing & Electrical Grounding

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A metallic plate, pipe or rode can be used as an earth electrode which has very low resistance and
carry the fault current safely towards ground (earth).

Size of Earthing Electrode

Both copper and iron can be used as earthing electrode.

The size of earth electrode (In case of copper)

2×2 (two foot wide as well as in length) and 1/8 inch thickness.. I.e. 2’ x 2’ x 1/8”. (600x600x300 mm)

In case of Iron

2’ x2’ x ¼” = 600x600x6 mm

It is recommended to bury the earth electrode in the moisture earth. If it is not possible, then put
water in the GI (Galvanized Iron) pipe to make possible the moisture condition.

In the earthing system, put the earth electrode in vertical position (underground) as shown in the
above fig. Also, put a 1 foot (about 30cm) layer of powdered charcoal and lime mixture around
the earth plate (don’t confuse with earth electrode and earth plate as both are the same thing).

This action makes the possible increase in the size of the earth electrode which leads a better
continuity in the earth (earthing system) and also helps to maintain the moisture condition around
earth plate.

P.S: We will post Example calculation about Earth Electrode Sizing… Stay tune.

Good to know:

http://www.electricaltechnology.org/wp-content/uploads/2015/05/Jointing-Copper-Wire-Earthig-Leads-to-Earth-Plate-Wrong-right-ways-for-Earthing-Lead-Installation.png

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Earthing, Types of Electrical Earthing & Electrical Grounding

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In addition, if a live wire touches accidentally (in a faulty system) to the metallic part of a machine.
Now, if a man touches that metallic part of the machine, then the current will flow through their body
to the ground, hence, he will get shocked (electrocuted) which may lead to serious injuries even to
death. That’s why earthing is so important?

Electrical Grounding & Earthing….. To be continued…
Please subscribe below, if you want to get the upcoming post about Earthing/Grounding such as:

Calculate the size of Earth Continuity Conductor, Earthing Lead & Earth Electrodes for differnt
electrical devices and equipment such motors, transformers, home wiring etc by Simple
calculations

Earthing Circuit and Earth Fault Current

Protection of Earthing System and Additional devices used in the Earthing / Grounding System

Points To remember while Providing Grounding / Earthing

Important Instruction for Proper earthing system

Electricity rules about Earthing

How to Test Earth Resistance by Earth Tester

How to test Earth loop Resistance by Am-Meter & Voltmeter

Protective Multiple Earthing

And much more….

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