Why earthing matters

Earthing connections, also called ground or grounding connections, link the plug of each electrical appliance with the ground, so that if any kind of electricity is discharged, or if there is a discharge derived from the atmosphere such as lightning, the harmful energy flows towards the ground and is diverted, so that it doesn't come into contact with people.

Therefore, earthing connections protect people from electric shocks, but they are also decisive for taking care of installations and circuits. They also optimise the quality of electrical signals and reduce electromagnetic noise. These are sufficient benefits to consider them essential, don't you think?

"They protect us from discharges, take care of facilities and optimise the quality of signals."

The key is their conductivity

Earth connections are more conductive than the human body. This means that in the event of an electric shock, for example caused by a frayed or damaged cable, it is easier for the electrical current to travel from the socket to earth via cables. But in the absence of an earthing installation, the possibility of an accident causing physical damage would be high.

In fact, do you know what happens to a body if it receives an electric shock? At moderate intensities, there is muscle stiffness and respiratory failure, but at higher intensities there is a very high risk of electrocution, cardiac arrest and serious burns. Faced with these types of risks, it is clear that caution is the best solution.

Identifying the earth wire in the cable is easy

They are easily distinguishable as they are green and yellow. This colour code is established by the wiring standard to facilitate the identification of each type of wire. For example, the blue wires correspond to the neutral conductor and the phase wire is usually brown, black or grey.

Earth wires are connected to tiny metal pins on the sides of sockets in modern installations. Both cables usually end in a rod, usually copper or steel, buried at the base of the building.

In reality, earthing is everywhere, present in almost every major facility in a building. For example, plumbing installations, boilers, gas, heating, lifting devices, electrical sockets, TV and FM antennas, wall reinforcement, concrete supports and even lightning rods.