Electrical system: everything you need to know

Electrical system: how much does it cost and how to bring it up to standard?

Making an electrical system in a house is one of the fundamental phases during the construction or renovation of a property. This system allows you to supply energy, light and electricity to all rooms in the house, but how much does it cost and what do you need to know to make it work as best as possible? In this article we will answer the most common questions regarding the electrical system, from its composition to the costs and methodologies for bringing it into compliance with the law.

How much does it cost to install an electrical system in a 100m2 house?

The cost of an electrical system depends on many factors, such as the size of the house, the type of system and the materials chosen. On average, it is estimated that for a 100 m2 house the cost can vary from 5,000 to 10,000 euros. Obviously, if you choose higher quality materials or opt for a more advanced system, the price can increase.

How is an electrical system made up?

An electrical system is made up of various elements, including:

• Power line: it is the cable that comes from the outside and brings energy into the house;
• Electrical panel: a container that houses the system's protection and control devices;
• Circuits: these are the cables that carry electrical energy to the different points of use (sockets, switches, lights);
• Protective devices: such as fuses or circuit breakers, which prevent short circuits or electrical overloads;
• Control devices: such as switches, which allow you to turn sockets or lights on or off;
• Earthing: a protection system that guarantees the safety of users in the event of lightning or electrical discharges.

What should an electrical system look like in accordance with the law?

To comply with the law, an electrical system must comply with the indications of Ministerial Decree 37/08 of the Ministry of Economic Development, which establishes the rules and regulations for a safe and functioning electrical system. Some of the main characteristics of a compliant system are:

• An adequate and accessible meter cabin for authorized personnel;
• An electrical panel with all mandatory protection devices;
• Cables and connections made in a workmanlike manner and in compliance with safety standards;
• Control and protection devices correctly installed and functioning;
• Presence of an adequate earthing system.

How much money does it take to make an electrical system?

As we have seen previously, the cost of an electrical system can vary greatly, based on the needs and choices of the owners. In any case, it is always advisable to rely on experienced and qualified professionals to avoid future problems and ensure user safety.

How much does it cost to redo the electrical system in 2023?

From 1 January 2023, the obligation to adapt electrical systems to the most modern regulations and technologies, provided for by Ministerial Decree 37/08 , is in force. Obviously, the costs of a total renovation will depend on the conditions of the existing system and the choices of the owners, but it is a good idea to start evaluating a possible investment now to avoid finding yourself unprepared for the deadline.

How much does it cost to redo the electrical system of an old house?

In an old house, the cost of renovating the electrical system can be higher than for a new one, as building works often also have to be considered to adapt the system to new technologies and current regulations. In these cases, the cost could vary between 10,000 and 20,000 euros, but it is always better to be informed by professional technicians who will be able to evaluate the specific situation.

How to redo the electrical system without breaking the walls?

In some cases, especially if it is an already furnished house, it is possible to redo the electrical system without having to demolish or break the walls. A possible solution is the use of canalous, i.e. channels that are embedded in the walls without the need for invasive masonry works. Also in this case, it is advisable to contact specialized technicians for a correct evaluation and implementation of the project.

How to bring an old electrical system in your home up to standard?

To bring an old electrical system up to standard, it is necessary to rely on a professional who can evaluate the situation and establish what changes are necessary to make the system compliant with current regulations. It may be necessary to replace some elements, such as the electrical panel or sockets, or make new connections and add protective devices. Also in this case, the cost will depend on the specific needs and characteristics of the existing system.

How much does it cost to redo an electrical system without breaking walls?

As mentioned previously, the use of canalous can be a solution for redoing the electrical system without having to break down the walls. Again, the cost will depend on the conditions of the system and the needs of the users, but this solution is usually a little cheaper than demolishing and rebuilding the walls.

In conclusion, the cost of doing or redoing an electrical system can vary greatly, but it is always important to rely on qualified professionals to guarantee the safety and functionality of the system. Taking care of your home's electrical system is essential to living in a comfortable and safe environment. Always remember to consult a specialized technician for a precise and personalized assessment based on your needs.