earthing

Earthing is the process of a path to earth, excessive electricity and voltage caused by short circuits or lighting thus preventing damage to the equipment and people.

earthingThe connection between electrical system, equipment and device with the earth plate or electrode through a thick wire resistance to provide safety from high current shock and damage is known as “earthing or grounding.

1} System earthing : connecting the neutral point of generator to connecting the earth

2} Equipment earthing : connecting the outer casing or supporting structure

>>System and equipment earthing should be separated  by minimum 10m distance

Earthing Location Ground Must Be Normally Moist On Usual Basic

Salt and coal can be used to, further reduce earth resistance

*The earth electrode is a plate or pipe driven into the ground and connects to the electric component or system

{Top Edge of rod must buried vertically 1.5 m below the ground }

Recommended size of earth electrodes

Conductor type  to be based vertically                  size mm

Copper plate                                                  600x600x3.15

GI plate                                                           900x900x3.15

GI pipe                                                            38mm

Cast ion pipe                                                  10mmx2.5m long

 

*The resistance of the earth wire should  not be more than 10 mm

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The importance of earthing or grounding Electricity:

 Here are 5 main reasons why earthing/grounding electrical currents are so important.
  1. Protection against overload

It protects appliances, home and everyone in it from surge in electricity if lighting was to strike or the power   was surge at your place for whatever reason, this produces dangerously high voltages of electricity in your system. If your electricity system is grounded, all of that excess electricity will go into the earth-rather than frying everything connected.

  1. Helps direct electricity

Having your electrical system grounded means you will be making it easy for power o be directed straight to whenever you need it, allowing electrical currents to safely and efficiently travel through electrical system.

  1. Stabilizes voltage levels:
  2. A grounded electrical system also makes it easy for the right amount of power to be distributed to all the right places, which can play a huge role in helping to ensure circuits aren’t overloaded and blown. The Earthing provides a common reference point for the many voltage sources in an electrical system.
  3. Earth is the best conductor: Excess electricity will always take the path of least resistance.
  4. Prevents damage, injury and death.

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