Visible electrical system: solutions and advantages

When it’s not possible to install a traditional concealed electrical system, you can opt for a visible electrical system. But is it safe? Is it compliant? How is it implemented? Here are the best solutions to ensure style and safety for your project.

And if you’re not sure you’ll like it, before starting the work you can try to make some project simulations with an AI architecture generator.

What is a visible electrical system

A visible electrical system is a distribution system for electricity where cables, pipes, and devices (such as sockets, switches, and junction boxes) are not embedded within the walls, but mounted on the surface, thus visible.

This type has historical origins dating back to the first residential electrical systems of the late 19th and early 20th centuries, when electricity was introduced into existing buildings, without the possibility of structurally intervening on the walls. The first systems used rigid metal conduits or insulated fabric braids, visible along the walls.

Over time, the visible system has been almost completely replaced by the embedded one, which is more discreet and integrated. However, in contemporary times, this solution has made a comeback both for practical needs (such as in the renovation of listed buildings) and for aesthetic reasons, especially in environments with industrial, retro, or minimalist styles. Materials and components have evolved: today, PVC conduits, painted metal pipes, or modular systems with refined designs are used, capable of merging aesthetics and functionality.

Is a visible electrical system compliant with regulations?

If you propose a visible electrical system to your client, one of the first concerns you’ll encounter is undoubtedly about the system’s safety and compliance with the current regulations..

However, it’s essential that the installation is carried out carefully and precisely by a qualified professional, possessing the necessary authorization.

The regulatory compliance of a visible electrical system depends on various factors, including the correct design and installation of the system, compliance with safety regulations, and local specifications. This includes the proper arrangement of sockets, switches, electrical protection devices, and other components according to user needs and building characteristics.

Electrical systems working drawing created with Edificius-MEP

Materials and electrical components used must comply with safety standards, be approved, and certified. This includes electrical cables, sockets, switches, junction boxes, and all other elements of the system.

The system installation must be performed by qualified and competent personnel capable of adhering to regulations and safety procedures throughout all project stages.

After installation, the system must be inspected and tested by an authorized technician to verify compliance with safety regulations and to ensure that it has been executed properly. Upon completion of the inspection, a certification should be issued attesting to the system’s compliance with current regulations.

Visible electrical system: what is it?

When electricity began to be introduced into residential buildings between the late 19th and early 20th centuries, all systems were installed visibly, using ceramic and metal components and round or flat section cables.
After the Second World War, the use of visible systems gradually declined in favor of concealed ones, finding application only in small businesses or service environments.

Today, the visible electrical system seems to be back in fashion, thanks to the rediscovery of vintage style, the growing passion for lofts, and the interest in the recovery of disused industrial buildings.

A modern visible electrical system is entirely similar to older ones, but it obviously uses more modern components, although often with a distinctly retro style. Technically and normatively, there are no contraindications, provided that the installation, as already mentioned, is carried out by a specialized technician, who issues a certification of regular execution of the works relating to the system.

As with traditional system projects, it is recommended to start with the development of a system diagram, indicating the placement and type of sockets, light points, switches, electrical panel, and any other component to be included (telephone, data, TV, etc.). The diagram will be essential both to present the necessary authorizations to the competent authorities and as a document to be used on-site for its implementation.

In the case of visible systems, the creation of a 3D model that helps to visualize the final result can also be useful. In practice, starting from the 3D architectural model, with a BIM software for MEP systems modeling, you can directly insert channels, sockets, lights, etc. in 3D and establish their exact positioning. You can create renders and realistic views of the project complete with systems and be sure that the result will be appreciated by the client. Automatically, you will also get the plans and diagrams of the system with the corresponding legend.

Once the external system is installed, it will be increasingly easier to make any modifications or additions to expand an existing system, creating an additional one and bringing it up to code.

Currently, there are many alternatives on the market: many manufacturers catalog one or more systems of this type, allowing the realization of a visible electrical system that makes aesthetics its strength.

Let’s discover the main alternatives for a visible electrical system.

PVC surface pipes

The simplest and most economical way to proceed is to use rigid circular pipes, in PVC, to accommodate the passage of electrical cables. These will be fixed to the wall with special pipe clamps. Junction boxes, sockets, and control points will always be of the external type, strictly visible. This solution doesn’t offer much choice in terms of colors, as external PVC pipes are usually light gray. However, with patience, it’s possible to repaint the channels according to your needs, matching them to the background walls for a camouflage effect or playing with color contrasts to emphasize their presence. The important thing is to pre-study the position of the channels so as not to obtain a disordered and aesthetically unattractive result.

PVC channels

If you want to create a more elegant visible system, you can use classic channels, available on the market in various types and colors.
The only thing to pay attention to is the choice of special pieces for angular, T, etc. fittings.

Skirting board cable ducts

Another alternative solution to the classic concealed system can be the use of skirting board cable ducts. These are architectural elements designed for the passage of electrical cables along a room’s perimeter. They are usually installed near the floor (but it’s possible to choose profiles suitable for creating cable frame moldings to be applied along the ceiling perimeter or at different heights along the walls) and provide a channel in which it’s possible to hide electrical cables so they’re not visible. This not only offers a neater and cleaner appearance to the environment but also helps to reduce the risk of trips or damage to the cables. This solution can be a valid alternative when the aesthetics of the visible system aren’t particularly appreciated but it’s complicated to create a concealed system.
Skirting boards and cable frame moldings can be made of various materials, including PVC, metal, or wood, and are designed to accommodate a variety of electrical cables. They may be available in different sizes and finishes to adapt to the design and style of any environment.

“Vintage” style surface installation

For lovers of vintage style or for rustic or historically valuable buildings, the best solution is to use braided cables, just like those used in houses from the 1930s and 1940s. The effect is guaranteed, especially if other visible components are carefully chosen. Rotary switches, available in wooden or bronzed finishes, surface-mounted junction boxes, visible roses, and metal tubular channels, together with decorative braids and ceramic insulators, will create a unique and fascinating installation. In this case, the choice of light points can also reflect the chosen style.

Generating design ideas for visible electrical systems with artificial intelligence

Artificial intelligence is becoming an increasingly useful tool in architectural design, even for particular solutions such as visible electrical systems. One of the most interesting applications is the automatic generation of rendered images, starting from simple visual inputs, such as environmental photographs or basic three-dimensional models.

Through the use of advanced computer vision techniques and context-driven visual generation, it is possible to obtain a realistic representation of the system integrated into the real space. This allows you to:

• immediately visualize the aesthetic effect of pipes, conduits, or vintage elements on the surface of the walls;
• explore different stylistic and distributive variants without the need to manually model every detail;
• verify the coherence between the system and the existing architecture, improving design choices.

For example, AI-based tools, such as usBIM.codesign AI, allow you to transform a photo of an empty environment into a photorealistic scene with the simulated visible electrical system, choosing from lighting settings, predefined styles, and customizable inputs via prompts.

This technology is particularly useful in contexts of renovation, redevelopment, or interior restyling, where it is important to test non-invasive and visually integrated solutions before proceeding with the actual installation.

Advantages and disadvantages

Opting for a visible electrical system isn’t always a style choice. Sometimes it can be a real necessity linked to the impossibility of creating traces in existing walls.
The most common cases include load-bearing stone walls, where it’s complicated or too expensive to make traces, exposed masonry or floor undersides with wooden beams where the corrugated cannot be hidden by plaster, or simply works where it’s chosen to minimize the impact of the works in terms of costs, times, and inconveniences for the occupants (dust, noise, etc.). In other cases, however, the visible system can be a clear style choice, for a vintage, rustic, or industrial design.

But what are the pros and cons of a visible electrical system?

Here are the advantages:

• affordable cost: compared to a traditional concealed system, a visible system offers an excellent quality-price ratio, guaranteeing high safety standards;
• less masonry work: you avoid expensive masonry work to create the necessary traces for a traditional concealed system;
• easy maintenance: in case of malfunctions or modifications, access to the system is more direct and doesn’t require masonry demolitions;
• adaptability and versatility: it integrates perfectly with the surrounding environment and can be easily customized to meet different aesthetic and functional needs;
• impactful aesthetics: a visible system can become a refined design element, helping to define the style of the environment.

The disadvantages:

• greater vulnerability: compared to a concealed system, a visible system is more exposed to accidental damage or unauthorized interventions;
• higher costs for particularly elaborate design solutions: if you opt for high-quality and design solutions, costs may be higher than for an underground installation.
• aesthetic effect not always appreciated.

If you’re interested in the topic, also read “Exposed Plumbing: The Advantages of 3D Modeling“.

Frequently asked questions about visible electrical systems

What is a visible electrical system?

A visible electrical system is a solution where cables, pipes, switches, and sockets are installed externally to the walls, thus visible. It is often used in contexts where it is not possible to intervene structurally or as a style choice.

Is it compliant to install a visible electrical system?

Yes, it is absolutely compliant. It is sufficient to adhere to current regulations, use certified materials, and entrust the installation to a qualified technician who can issue the necessary certification.

What are the advantages of a visible system?

It offers a lower cost compared to a concealed system, requires less masonry work, is easily inspectable and modifiable, and is highly customizable even from an aesthetic point of view.

What are the disadvantages?

It is more exposed to accidental impacts, can be less discreet if not well designed, and if design materials are chosen, costs can increase.

What materials are used for a visible electrical system?

PVC pipes, plastic or metal conduits, cable trunking, braided cables, ceramic insulators, and vintage switches: the choice depends on the desired style and the context of the intervention.

Is it possible to simulate a visible system before realization?

Yes, thanks to artificial intelligence and applications like usBIM.codesign AI, it is possible to generate realistic renders starting from a photo or a simplified 3D model, to test the aesthetic effect of the system in the real space.