Earth electrodes are in different shapes like, conductive plate, conductive rod, metal water pipe or any other conductor with low resistance. Earth Electrode: When a conductor (or conductive plate) buried in the earth for electrical earthing system.Solidly Earthed: When an electric device, appliance or electrical installation is connected to the earth electrode without a fuse, circuit breaker or resistance/Impedance, It is called “solidly earthed”.Earthed: When an electrical device, appliance or wiring systems connected to the earth through earth electrode, it is known as earthed device or simple “Earthed”.Earth: The proper connection between electrical installation systems via conductor to the buried plate in the earth is known as Earth.To avoid the risk of fire in electrical installation systems.ĭifferent Terms used in Electrical Earthing.To serve as a return conductor in electric traction system and communication.To Protect Electric system and buildings form lighting.To keep voltage as constant in the healthy phase (If fault occurs on any one phase).To protect human lives as well as provide safety to electrical devices and appliances from leakage current.This is why we need Electrical Earthing or Grounding in electrical installation systems. To avoid such instances, the power supply systems and parts of appliances have to be earthed so as to transfer the charge directly to the earth. If a person touches such a charged metal, the result is a severe shock. When the metallic part of electrical appliances (parts that can conduct or allow passage of electric current) comes in contact with a live wire, maybe due to failure of installations or failure in cable insulation, the metal become charged and static charge accumulates on it. The primary purpose of earthing is to avoid or minimize the danger of electrocution, fire due to earth leakage of current through undesired path and to ensure that the potential of a current carrying conductor does not rise with respect to the earth than its designed insulation. 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. 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. 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 connect the metallic (conductive) Parts of an Electric appliance or installations to the earth (ground) is called Earthing or Grounding. What is Electrical Earthing or Grounding? Dangers Of Not Earthing A Supply System.General Method of Electrical Earthing Installation (Step by Step).Methods and Types of Electrical Earthing.Earth Plate or Earth Electrode Size for Small installation.Earth Continuity Conductor or Earth Wire.Different Terms used in Electrical Earthing.Difference between Earthing, Grounding and Bonding.What is Electrical Earthing or Grounding?.
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