Why required earthing

Earthing is an important component of electrical systems because of the following reasons:. From a technical perspective, earthing has some excellent advantages, resulting it in becoming a mainstream practice in the electrical industry. Plate earthing requires a copper or galvanised iron to be buried vertically into the earth in an earth pit, dug more than 10 feet into the ground. These earth pits are then filled with charcoal and salt in alternate layers.

For pipe earthing, a pipe of galvanised steel is placed in the soil instead of a plate. The pipe is drilled with holes for connecting the earthing wires. The length and diameter of the pipe depends on the type of soil and the type of electrical installation.

In this method as well, the earth pits are filled with alternate layers of charcoal and salt for inducing reactivity.

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. Luckily there is another solution: You can provide one or several ground rods keep them at least at 3 meters from each other.

These metal pins are hammered 80 cm into the ground and connected to the electrical installation using earth conductors. The earth conductor connects the earth electrode with the grounding breaker and the main earthing clamp. Apart from the grounding loop or earth electrodes, we still need an earthing conductor that connects everything to the main grounding rail.

Also make sure to provide an earthing disruptor to test the resistance. The resistance may not exceed 30 Ohm. Example of a grounding disruptor. 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. So it can remove most of the static charge build-up in the conductors. Eliminate stray voltage : Similar to static charge it also prevents stray voltage in the line.

That is no potential difference to build in the conductor. Voltage Stabilization : In a network which has multiple feeders or sources there must be a common point which acts as a universal reference point. The Earthing acts like as a balance point. Protection from power surges : Earthing can protect from sudden excessive surges, it also provides protection from lightning strikes.

Any lighting strikes on the exposed metal or received through another path which is connected to earth line get discharged directly to earth. Mainly protective devices like ELCB, earth fault relays, etc. Because in order to operate all these devices use the reference of leakage current through the earth line.

I think, if there is an earth leakage to the body of the appliances then it requires it own connection to provide earthing. If the main switch has earth connection then it can only earth the contacts in the main switch that are electrically connected to it and still there is no path for the leakage of individual appliances. Hence the appliances body need to be earthed to discharge the leakage. Any experts please correct me if i am wrong.

Your email address will not be published. Arduino Ultrasonic servo rover distance meter. Arduino siren sound generator code. Power Factor Improvement using Capacitor Bank. Capacitive reactance formula derivation and calculation.