Cat B Electrical Fitout Progress for a Major Commercial Design and Build Project
The Peak Electrical & Renewables team is fully underway on the main containment phase of our latest Cat B electrical fitout project.

Working directly for a FTSE 100 client, this project is a strong example of the type of commercial electrical work where planning, coordination and high standards matter from day one. The site is progressing well, the team is on schedule, and the early stages of the installation are now taking shape across a large commercial space.

From design alignment through to on-site delivery, every stage needs to be carefully managed. A Cat B fitout is not just about installing electrical containment and supplies. It is about creating a practical, compliant and future-ready electrical infrastructure that supports the way the finished building will be used.

What Is a Cat B Electrical Fitout?

A Cat B fitout is the stage where a commercial space is adapted to suit the specific needs of the end user.

The base building may already have core services in place, but the Cat B phase turns the space into a working environment. This can include power distribution, lighting, data routes, containment, small power, mechanical supplies, distribution boards and other electrical infrastructure required for the completed layout.

For commercial, office, industrial and retail environments, this stage is critical. The electrical installation needs to support the day-to-day operation of the building while allowing for safe access, future maintenance and any planned expansion.

Peak provides commercial electrical contracting for businesses that need reliable design, installation and project delivery across larger working environments.

Main Containment Phase Now Underway

This latest project has now moved into the main containment phase.

Containment is one of the most important early stages of a commercial electrical fitout. It provides the physical routes for cables, supplies and services throughout the building. If this stage is not planned properly, it can create problems later in the project when other trades, access requirements and final connections come into play.

On this site, the containment work includes carefully planned routes across the commercial space, with the team working at height and coordinating around the wider construction programme.

This stage sets the foundation for the next phases of the electrical installation, including distribution boards and supplies.

Why Good Design Alignment Matters

Before installation begins, design alignment is essential.

A commercial electrical project needs to account for how the space will be used, where equipment will be located, how power will be distributed, and how future maintenance can be carried out safely.

This is particularly important on Cat B fitout work, where the installation must follow the client’s operational requirements while also meeting relevant electrical safety and construction standards.

Early design coordination helps reduce delays on site. It also allows the electrical team to identify practical issues before they become costly problems.

For businesses looking for support on larger sites, Peak also delivers industrial electrical contracting across more complex environments where safety, planning and reliable installation are essential.

Working to a High Standard for Major Clients

Working directly for a FTSE 100 client brings a clear expectation of quality, communication and consistency.

Projects of this scale need more than technical ability. They require proper scheduling, professional site conduct, accurate coordination and a team that can keep momentum without compromising standards.

The Peak team is maintaining strong progress on site, with the main containment works moving forward in line with the programme.

A big credit goes to the lads on site for keeping the energy high and continuing to deliver in a busy commercial environment.

Safety and Compliance on Commercial Electrical Projects

Electrical work on construction and fitout projects must be planned and carried out safely. This includes safe working practices, suitable access equipment, clear isolation procedures and proper coordination with other trades on site.

The Health and Safety Executive provides guidance around electrical safety in construction, including the importance of taking precautions against the risk of injury from electricity during construction work. You can read more through the HSE guidance on electrical systems in buildings.

For Cat B electrical fitouts, this means every stage should be approached with care. From containment and cable routes through to boards, supplies and final testing, quality control and safety checks are part of the process.

What Comes Next?

With the main containment phase underway, the next stage will focus on distribution boards and supplies.

This is where the project starts moving closer to the operational electrical setup required for the finished space. These stages must be carefully sequenced so that supplies are installed correctly, labelled clearly and coordinated with the wider building services.

As the project moves forward, we will continue sharing updates from site and showing how each stage comes together.

Commercial Electrical Fitout Across Dorset, Hampshire and the South

Peak Electrical & Renewables works with commercial, industrial and construction clients across Dorset, Hampshire and the wider South.

Our work covers design and build support, commercial fitouts, industrial electrical projects, solar PV, energy-saving upgrades and ongoing electrical maintenance. You can view more of Peak’s wider service offering through our electrical and renewable energy services page.

We also work across a broad regional area, supporting businesses, schools, commercial clients and industrial sites. You can see more about the locations we cover on our Dorset and Hampshire service areas page.

A Strong Start to the Project

This Cat B electrical fitout is off to a strong start, with the main containment phase progressing well and the team fully underway.

The early stages of a project like this are all about setting the standard. Good planning, tidy installation, safe working and strong communication all help keep the programme moving in the right direction.

We are looking forward to sharing more updates as the next phases progress, with distribution boards and supplies coming up next.