The installation of an electrical system must be carried out in a safe and reliable way, following the regulations in force, since electricity is a precious resource for the operation of buildings and homes, where almost everything is powered by electrical devices. Ma quali sono gli elementi per realizzare un impianto elettrico e quali le normative riguardo l’installazione e la certificazione per tali impianti?

Electrical system: what are its components

For the correct installation of an electrical system, several components are necessary, such as:

• The control panel, the heart of the system;
• The earthing system, which is indispensable for grounding electricity in the event of an unexpected voltage surge;
• Electrical sockets, to connect electronic equipment to the mains;
• Switches;
• Conductor cables;
• Electrical circuits.

The reference standards

The rules concerning the installation of an electrical system are the old Law n. 46 of 1990 which introduced a series of regulations concerning the installation, design and certification of electrical systems. For the qualification to operate on an electrical system, for example, the installation company must issue a declaration of conformity to the owner at the end of the works. This law was then replaced by Ministerial Decree 37 of 2008 with which some modifications were introduced such as the obligation for the owner of the plant to adopt the safety measures taking into account the instructions for use and the maintenance programmed by the installer. From 2011, instead, the V3 variant of the CEI 64-8 standard came into force, with which the three levels of equipment for an electrical system were established. Level 1 corresponds to the basic level, level 2 to medium-standard and level 3 to advanced level. Facilites below level 1 are considered outlaws. Delivering the declaration of conformity and the electrical system booklet certifies the professionalism and quality of the work carried out as well as the possibility of periodically checking the system status and intervening if necessary.