The Basics of Electrical Installation

electricianThe basics of electrical installation are important for the safe and reliable use of electricity around the home. In this article, we’ll discuss the components that comprise a system and what you should be aware of. We’ll also cover overvoltage protection and Circuit breakers. In addition, we’ll cover the types of Conductors, Conduits, and Circuit breakers. This knowledge can help you avoid costly electrical repairs later on.

Overvoltage protection in electrical installation is an important safety factor. This type of protection protects against damage caused by overvoltages and lightning strikes. Its effectiveness depends on the circuit’s design and the equipment’s characteristics. A good overvoltage protection system should prevent false trips or undetected real overvoltages. It can be made of various devices, including mechanical and integrated circuits, and can be connected internally or externally. To learn more, visit this website at

Overvoltages occur when voltage levels exceed the limits of the mains network. Indirect lightning can trigger high voltage peaks that can destroy unprotected electrical appliances and electronics. Indirect lightning also produces surges that reach computer systems and telephone lines. Overvoltage protection devices eliminate these peaks to protect sensitive electronic devices. While overvoltages can damage electrical equipment, they can also cause dielectric breakdown and cause electrical appliances and equipment to stop working altogether.

Man-made transients appear when lightning strikes the electrical installation. These impulses are high in amplitude and extremely destructive. Because of this, it is necessary to install a surge protection device on the line upstream of the equipment. In addition, the first surge protection device should be installed as far as possible upstream. The amount of protection needed depends on the length of the line and the sensitivity of the equipment. In cases where multiple surge protection devices are used, specific coordination rules must be followed.

Circuit breakers

Most homes have one type of circuit breaker, called a single-pole breaker. This device monitors the flow of electricity in a standard lighting circuit, such as a two-slot outlet. Single-pole breaker circuits are typically one inch wide and are used for standard lighting in the home. Other common breaker sizes include half-size (1/2-inch wide with two switches) and twin/tandem. Twin/tandem circuit breakers control two separate circuits, and full-size circuit breakers protect both.

To install a circuit breaker, the wiring in a house must pass through the service panel. This panel contains the main power lines and has a circuit breaker attached to each wire. These wires carry 120-volt electricity. When a circuit breaker trips, the flow of electricity is disrupted, and the circuit breaker resets itself to prevent the occurrence of further damage. If the breaker is tripped, the electrical system can be rendered useless, or the entire house could be damaged.

Circuit breakers are important devices in electrical installations. They interrupt power flow when they detect electrical short-circuits. An electric arc can result when the contacts in a circuit breaker open and close, which can cause explosions and other dangers. Because circuit breakers can be so dangerous, they must be designed with safety in mind. The following tips will help you choose the right type of circuit breaker for your needs.


Conduit is a protective material made of metal or plastic that protects your electrical wiring. This material is necessary in every electrical installation because exposed wires can be susceptible to a number of dangers. These dangers can include heat and extreme weather. However, if you’re wiring inside a wall or ceiling, you won’t need to use conduit. It is just as important to use proper installation techniques when dealing with electrical wiring.

The thickness of the conduit wall dictates the size of the wires to be run through it. Conduit made of thin wall is less expensive but it cannot be “snaked” through openings. You need full access to the studs or joists to install this type of conduit. You can find electrical metallic tubing from manufacturers such as Thomas & Betts, Allied, and Robroy. One-half-inch conduit can accommodate four No. 14 wires and three No. 12 wires. A three-quarter-inch conduit can accommodate up to five No. 12 wires.

EMT, or Electrical Metal Tube, is a popular material for house wiring, but it’s too thin to fit threaded joints. Instead, it’s joined to other lengths of conduit with clamp-type fittings. EMT is available in different diameters and can be un-threaded or threaded. If you’re installing electrical wiring outdoors, you’ll need a special watertight type of conduit, which is usually made of steel or aluminum.


Electricians use a variety of materials in the installation of electrical equipment. The metals are categorized into two general types: bare and tinned copper. The latter is preferred for electrical applications in which temperatures do not exceed 150degC. However, tinned copper is slightly more expensive than bare copper wire, but the savings in labor time more than compensates for the added cost. Striped lead must be treated with solder dipping before installation.

In electrical installations, there are two main types of wires: solid and stranded. The solid conductor is reserved for smaller diameter wires. In comparison, the stranded copper is used in larger wire sizes. Insulators are non-conductors, and they break down when the voltage is exceeded. They are rated for specific voltages, and a properly installed electrical installation will not trip the breakers.

Conductors are made of different materials depending on their use. Copper-covered steel, high-strength copper alloys, and aluminum are the most common. Pure silver and nickel are also common materials for conducting electricity. Other materials that are not very good conductors are semiconductors. Semiconductors do not have the high resistance of conductors, but still have their uses. Nevertheless, copper is the most common electrical conductor used around the world.


There are several types of cables used in electrical installations. For example, cables with lower voltages are typically covered with an asphalt-saturated cotton braid or polyethylene insulation. Dielectric materials are used to prevent accidental electric shock and minimize short-circuits. The same is true for cables with higher voltages. In general, cables that are insulated with oil have better conductivity than those without. But if you want a cable that is completely waterproof, you should look for a wet location electrical cable.

Flexible cables are also available. These are made of several strands of conductor in a flat shape, resembling a piece of ribbon. Because of their flexibility, they are used in computers and other moving applications. However, they restrict air flow in the computer and affect its cooling system. As a result, they are mostly replaced by round cables. In general, there are two types of cables used for electrical installation.

Generally, cables are classified by their wire size/gauge and insulation. Labelling on cables indicates the type of insulation, the number of wires, and their individual resistance. Typically, the cable’s insulation type (R, S, or C) indicates the number of individual conductors, while the dash signifies the grounding wire. This is important information for a safe and efficient electrical installation. If cables are not marked properly, they can pose a safety risk.


The Electrical Installation Regulations are the requirements for the installation of electricity in your property. They apply to the wires, switches, transformers and other electrical equipment in both indoor and outdoor locations. Although appliances are not considered part of the Electrical Installation, they must be connected to the circuits according to the applicable regulations. This document contains detailed information on the Regulations for electrical installations. However, if you are planning to install appliances in your property, you should read this document first.

The installation must be properly labeled. It must indicate basic operating parameters, the source of power and where it is connected to other installations. All wiring must be numbered. Individual circuits must be labelled at the source end and appropriately at intervals along the route. Non-domestic electrical installations must be labelled with Circuit numbers. These regulations are intended to protect the public and the environment from electrical shock and fire. Therefore, it is essential to comply with the regulations for electrical installation.

The regulations for electrical installation have been revised frequently over the years. The most recent edition was published in 2000 and reflects changes in electrical engineering standards in Europe. For instance, changes to the Harmonized Documents (HDs) must be reflected in the British regulations. BS 7671 was founded on a revision of the standard. The standard includes a new “100” numbering system that identifies Great Britain specific regulations.