Electrical installation work price

Replacement of wiring

If you have electrical wiring in your apartment or house that is 30 years old or more, you should consider replacing it from the old aluminium wiring to standard copper wiring.

You can recognize aluminium power lines by their silver conductors. Its main problem is that aluminium degrades over time, causing loose wires at the connections, switches and plugs, where consequently the cables overheat, which can lead to plug or switch fires. It does not meet current standards and the onslaught of the multitude of electrical appliances of today.

The old power lines also did not take into account the amount of electrical equipment we use nowadays, let alone the power consumption, which easily exceeds 2000 watts.

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Also, if you observe sparking in plugs or switches, it's time to replace the wiring, as there is already a risk of fire or electric shock. If a plug is sparking, it means that its contact surfaces are covered with metal dust that can cause a short circuit. And the subsequent burning of your property.

TIP: if you plug in, for example, a kettle and an iron at the same time and the plug starts to overheat or even blows a fuse, you should take action. And it's not enough to replace the main circuit breaker, because your old electrical wiring can only safely handle so much of that breaker.

Price of wiring replacement

The cost of replacing wiring depends on several factors. The first is the scope of the project. Smaller apartments or homes with simple electrical wiring may have lower costs, while large properties with complex systems require more time, materials, and labor, which increases the overall cost. As a guide, the average cost of replacing the wiring in an older apartment of around 70 m² is between €3,000 and €5,000. For larger houses, these costs can climb to €8,000 to €15,000, depending on the complexity of the work and the materials used.

The material used is another important factor that influences the price. In the case of wiring, it is mainly the choice of cables, switchboards, sockets, switches and other components. Modern cables with higher load capacity and better durability may be more expensive, but they provide greater safety and longer life. Cables range in price from €0.50 to €3 per metre, depending on type and cross-section. Good quality sockets and switches can cost between €5 and €50 per piece, depending on the brand and design. For switchboards, prices range from €100 to €500, depending on the number of circuits and security.

Labour is another key cost factor. The cost of labor for electrical wiring replacement depends on the region, the experience of the electricians, and the complexity of the project. On average, the cost of labour ranges between €20-40 per hour. If there are special requirements, such as the installation of smart systems or surge protection, these costs can be higher. For large projects, it may also be necessary to employ several electricians at the same time, which increases the overall labour costs.

Older buildings have more expensive electrical work

The condition and accessibility of the building also affect the cost of replacing the wiring. In older buildings where walls, ceilings and floors are already badly worn or damaged, replacing wiring can be more difficult and expensive. If additional structural modifications are required, such as cutting grooves in walls or repairing plaster after new wiring has been installed, the cost of the project can increase significantly. In addition, in buildings with limited access where work needs to be done in confined or hard-to-reach spaces, the work can be more time-consuming and therefore more expensive.

Regulatory and safety standards also play a role in the cost of replacing wiring. In many countries, there are strict standards and regulations that must be followed when installing electrical systems. These standards include, for example, requirements for cable layout, the use of certain types of material and safeguards against hazards such as fires or electric shocks. Meeting these requirements can increase the overall cost of the project.

According to statistics, the replacement of electrical wiring is one of the most common interventions in the renovation of older buildings. More than 70% of buildings older than 30 years have outdated electrical wiring that does not meet current safety standards. Therefore, upgrading electrical wiring is essential not only to improve safety, but also to ensure sufficient capacity for the new technologies and appliances that are proliferating in modern homes.

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Replacement of wiring has a higher price, especially for the large interventions required

In the case of some buildings, plastic tubes were used, the so-called "goosenecks" in which the cables were routed. In this case, their replacement is easier and does not require significant construction interventions.

However, most of the wiring in our flats is either concealed or the most widely used solution at the moment: grooving.

Grooving consists of cutting or cutting grooves directly into the concrete or brick wall. This method is also used today in new buildings, where the walls are first concreted and then grooves are cut into them for wiring.

It sounds like a difficult process and it is. Whether a demolition hammer is used to cut the grooves or special grooving machinery, which is also not cheap, these are also physically demanding activities and this is reflected in their price.
This work is naturally very noisy and, in addition, extremely dusty. It creates fine dust that gets absolutely everywhere. So you have to have the area completely cleaned out, unless you want to wipe the dust off the pages of the books as well.

Plus, you have to allow for more grooves, because you definitely want to have more plugs than you had before. Add to that the possible relocation of fixtures.

The new wiring is fixed in the grooves with gypsum adhesive and then worked in with plaster or trowel. This must then be sanded and re-sanded, which then creates beautiful walls without the grooves showing. When squeegeeing, the surface needs to be sanded which creates an additional amount of fine dust.

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The procedure of electrical installation works:

Planning:

1. Preparation of project documentation: before starting the work, have the project documentation for the electrical installation prepared by a qualified designer. The design should include the scope of work, location of outlets, switches, fixtures and switchgear, cable routing and other important information.
2. Choice of materials: when selecting materials for wiring, pay attention to quality and compatibility with the existing system. Use only certified materials from reputable manufacturers.
3. Obtaining permits:Depending on local regulations and the type of wiring, building permits, inspection reports and other permits may be required.

Dismantling of old equipment:

1. Switching off the electricity supply: turn off the main switch in the switchboard before starting work.
2. Removal of old wiring, sockets, switches and light fittings: remove old wiring components and cable runs are usually left in the walls as they were originally designed.

Space preparation:

1. Drill holes and cut grooves: drill holes for sockets, switches and luminaires and cut grooves for wiring according to the project documentation.
2. Placing the cables: place the cables in the grooves and holes and fix them with suitable clips or plaster.

Installation of new equipment:

1. Installing the switchboard: install the new switchboard according to the instructions in the project documentation and connect the cabling to it.
2. Install outlets, switches, and light fixtures: Install outlets, switches, and light fixtures according to manufacturer's instructions and project documentation. Ensure proper cable connections and sealing of joints.
3. Earthing: Perform earthing of the switchboard and all metal parts of the wiring according to applicable standards.

Commissioning:

1. Switching on the electricity supply: turn on the main switch in the switchboard.
2. Functionality test: test the functionality of sockets, switches, light fittings and other wiring components.
3. Revision control: After commissioning, the wiring must be inspected by an inspection technician who will issue an inspection report.

Important aspects of electrical installation work:

• Compliance with standards and regulations: it is important to comply with the applicable standards and regulations regarding the safety and operation of electrical wiring when carrying out electrical work.
• Use quality materials: invest in quality materials and components that are resistant to corrosion and temperature fluctuations.
• Proper sealing of connections: make sure that the connections of cables and components are properly sealed to prevent electric shocks.
• Safety: when working with electricity, always follow the safety instructions and use protective equipment.
• Professional help: entrust electrical installation work only to experienced and licensed professionals or an experienced company.

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Installation of the electric fan and installation of the luminaires: detailed instructions and tips

Installation of electric fan:

Preparation:

1. Switching off the electricity supply: before starting work, turn off the main switch in the switchboard or switch off the circuit breaker for the circuit.
2. Selecting the location: choose a suitable location for the fan, taking into account its function (ventilation of the bathroom, kitchen, toilet, etc.) and sufficient space for installation. Ensure that safety distances from taps and shower enclosures are maintained.
3. Hole preparation: If necessary, drill a hole in the wall or ceiling for mounting the fan.

Installation of the fan:

1. Fixing the fan: fix the fan to the wall or ceiling according to the manufacturer's instructions. Make sure the fixing is stable and load-bearing.
2. Duct connection (if necessary): If the fan is equipped with an air outlet duct, connect it to the fan and to the outlet outside the room. Make sure the connections are tight.
3. Electrical connection: connect the fan to the mains according to the manufacturer's instructions. Make sure to connect the cables correctly and follow the safety regulations.
4. Commissioning: turn on the main switch in the switchboard or turn on the circuit breaker for the circuit. Test fan operation and speed control (if applicable).

Important tips:

• Read the fan manufacturer's instructions before installation.
• Use quality materials and tools.
• Make sure that the joints are properly sealed and observe safety regulations.
• If in doubt, contact a professional electrician.
• Check and maintain the fan regularly to prevent breakdowns and prolong its life.

Installation of luminaires:

Preparation:

1. Switching off the electricity supply: before starting work, turn off the main switch in the switchboard or switch off the circuit breaker for the circuit.
2. Selecting a luminaire: choose a suitable luminaire taking into account the type of room, the style of the interior and the desired degree of illumination.
3. Site preparation: mark the fixing point on the ceiling and check the load-bearing capacity of the ceiling at that location.

Installation of the luminaire:

1. Fixing the luminaire: fix the luminaire to the ceiling according to the manufacturer's instructions. Take care of the stability and load-bearing capacity of the fixture.
2. Electrical connection: connect the luminaire to the mains according to the manufacturer's instructions. Make sure to connect the cables correctly and observe safety regulations.
3. Commissioning: turn on the main switch in the switchboard or turn on the circuit breaker for the circuit. Test luminaire operation and brightness control (if applicable).

Important tips:

• Read the luminaire manufacturer's instructions before installation.
• Use quality materials and tools.
• Make sure that the joints are properly sealed and observe safety regulations.
• If in doubt, contact a professional electrician.
• Regularly inspect and maintain the luminaire to prevent breakdowns and prolong its life.

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