Electrical installations, what are they?


What are electrical installations? What are the types of electrical installations? The building, commercial, and industrial electrical installations, what’s the difference? Electrical installations design, what is the importance? These are the main doubts about electrical installations and we will clarify each of these points, come on guys!

Electrical installations, what are they?

The electrical installation comprises the physical implementation of the components of the electrical connections, the connection between the source of electrical energy and the electrical loads. In low voltage electrical installations, the generating source comes from the concessionaire and the charges are the household appliances and electronics that we connect to the outlets.

Characteristics of electrical installations.

The electrical installation can be divided into the following parts:

  • The infrastructure of the electrical installation: the infrastructure comprises the conduits, passage boxes, meter boxes, cable fasteners, electric trays, electric beds, cable trays, supports, etc.
  • Measurement and protection: This part of the electrical installation consists of all meters, circuit breakers, fuses and relays that monitor and protect electrical installations.
  • Cabling: Conductors are responsible for connecting sources to electrical loads, such as electrical and electronic equipment, motors, etc.
  • Control: The control part in a residence, for example, are switches for the lighting system, sensors for automation or systems for controlling a pool pump. Its function is to activate and deactivate loads.

The building, commercial and industrial electrical installations, what’s the difference?

The types of electrical installations are building commercial and industrial electrical installations. The main differences between them are the complexity of the installations and the installed power.

In a building or residential electrical installation, the control system basically consists of switches for the lamps and probably no relays will be used in this installation. In an industrial electrical installation, several measuring systems will be used to control energy consumption at each stage of production, several relays for process control and protection of machines and equipment, various control systems using electrical commands, and electrical automation.

The installed power of equipment in an installation is much greater in the case of industrial electrical installations compared to residential electrical installations, this difference creates the need for many measurements, protection and control systems and this changes the complexity of the systems.

Classification of electrical installations!

Electrical installations can be classified into:

  • Low voltage or extra-low voltage installation.

Reduced voltage installation is the installation that operates with a nominal electrical voltage less than or equal to 75V in direct current, or less than or equal to 50V in alternating current.

  • Low voltage (BT) installation.

Low voltage installation is the installation that operates with a nominal electrical voltage greater than 75V and less than or equal to 1500V in direct current, greater than 50V, and less than or equal to 1000V in alternating current.

  • High voltage (AT) installation.

High voltage installation, the installation whose voltage exceeds the values ​​defined for low voltage, reaching several hundred kV

Electrical installation projects, what is the importance?

The electrical project is the gathering of information on electrical installations, every electrical installation project consists of information tables, electrical diagrams and symbols of electrical installations. Every project must follow the standards of electrical installations such as NBR 5410 Low voltage electrical installations, NBR 5444 Graphic symbols for building electrical installations, and NR 10 Safety in electrical installations and services.

Safety in electrical installations is a very important point and the project collaborates so that the safety of this electrical installation is guaranteed, the electrical installation project contains all the safety parameters that must be adopted.
In higher education courses such as electrical engineering, civil engineering or architecture, there are many specific subjects about electrical installations, where several of the many terms that relate to electrical installations and their characteristics are discussed and explained.

We covered here a little bit about electrical installations and we can see many other subjects about electrical installations being covered on YouTube, as in this video below: