An electrical system must be made ​​on the basis of well-defined rules that have been prepared by elector-center Italian ( CEI ). There are different standards CEI, but what is more generally of interest is the IEC for Electrical Safety 64-8, which refers to those systems designed for civilian use and industrial use. This rule stems from the positions in the field of European security and has undergone several revisions, most recently in March 2011. Here are the salient points of the law, the requirement that aims to build systems that are not a danger to human health.

The law regulates the issue in terms of design, materials used for the construction of the plant, monitoring, verification and sanctions to ensure full security. With regard to the design of more complex systems, such as industrial and residential high-voltage or those of special environments (such as those for EXAMPLE for medical use), must be prepared by a chartered engineer according to precise rules dictated by the same standard. Another important aspect concerns the company that installed the system, which must have the necessary expertise certified by registration in the companies that can operate in this direction.


The legislation provides that the system must have a current value lower than duck physiologically dangerous the any interruption of the circuit must be able to be made ​​through a device easily recognizable, to be used in case of over current (overload or short circuit), surges or sags voltage. In addition, the electrical system must be independent of other building systems, in order to avoid mutual influences the occurrence of a malfunction of any of these. Materials to use for the realization of the electrical system the standard is very clear and specific that they must be resisted to extreme temperature rises, which can cause fire or burns by direct contact.

In accordance with the directives, the system must be tested prior to its operation and after any amendment by the installing company. Cited for last but not least is the directive of conformity must be issued by the company once the work is completed; such a declaration attesting that the plant has been built in full compliance with the regulations in force, In full respect of its project and that has been checked and verified before it is used. The statement is nothing but a form, which when compiled, and released by the company to the customer, must be delivered to the offices of competence, who will arrange to issue the certificate of habitability and usability.