Pipe earthing is the most common type of earthing. Similar to pipe earthing, rod earthing requires the burying of a rod made of copper or galvanised iron. Electrodes are embedded in the soil and thus decrease the resistance of the earth as required. For wire earthing, several horizontal trenches are dug. Strip electrodes are buried inside these trenches. These electrodes are made of copper, or galvanised iron or steel. Sometimes, round conductors are also used in the ground.
The Waterman method calls for the use of Waterman or galvanised GI pipes. Photo source. There are different elements in your house that need a grounding, starting with sockets and light points You can recognize the protective conductor by its yellow-green isolation. It should have the same diameter as the phase conductor. Apart from that, certain metal components get a protection against dangerous voltage.
Equipotential connections are used for this purpose. We can mainly summarize them in two kinds:. In our web shop you can get clamps to attach the grounding wire on the lines and other elements. Cancel Reply. Please enable javascript to view this site.
Products Brands 3D Planner Sale. What is earthing and why is this mandatory? It's an electrical connection between the exposed metallic parts of an electrical appliance or installation and the earth, regarded to have zero potential. Proper earthing provides an alternative and easy path for leakage or faulty current to flow. It ensures that any exposed conductive part of the appliance does not reach a dangerous level of potential or voltage that endangers the user's life.
Without a properly grounded electrical system, you are risking any appliances you have connected to your system being fried beyond repair.
In the worst-case scenario, an overload of power can even cause a fire to start, risking not just extensive property and data loss but physical injury as well. In most homes, the wiring system is permanently grounded to a metal rod driven into the ground or a metal pipe extending into the house from an underground water-supply system.
A copper conductor connects the pipe or rod to a set of terminals for ground connections in the service panel. For wiring systems that use electrical cable covered in metal, the metal usually serves as the ground conductor between wall outlets and the service panel. In wiring systems that use plastic-sheathed cable, an extra wire is used for grounding.
Since electricity is always looking for the shortest path back to the earth, if there is a problem where the neutral wire is broken or interrupted, the grounding wire provides a direct path to the ground. Through this direct physical connection, the earth acts as a path of least resistance, preventing a person from becoming the shortest path, and suffering a serious electric shock.
You can usually tell whether your electrical system is grounded by checking your power outlets. If they accept plugs with three prongs, your system should have three wires, one of which is a grounding wire.
Similarly, an appliance designed to be grounded is equipped with a three-wire cord and a three-pronged plug.
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