The design and execution of an earthing system is a fundamental step in any type of construction. A good state of an electrical facility is vital for any modern facility, whether industrial or civil, due to the large number of processes carried out by elements connected to it. The connection of metallic elements of an earthing system can be carried out mechanically or by welding (such exothermic welding), although not all of these types of connection ensure reliable and, above all, long-lasting connections.