Electrical design for buildings
We prepare electrical designs for new buildings and alterations to existing buildings. We agree the scope with you, from the main electrical solutions to the diagrams and plans needed for installation.
What is an electrical design project?
An electrical design describes the building’s power supply, distribution boards, cabling and lighting. Drawings and diagrams help the contractor plan and install the system. The scope depends on the building, the planned changes and the stage of construction.
For a new electrical system or an alteration, we start with your requirements and the site details. If you need documents for a building or occupancy permit application, include the list of documents requested in that process so we can clarify the work required.
If the electrical installation is already complete but drawings or other records are missing, see our documentation restoration and audit service. Documenting an existing installation and designing a new system are different tasks.
Stages and components of an electrical design project
Basic project
The basic design sets out the main electrical solutions and coordinates them with the rest of the building. It helps define the scope of installation work and request contractor quotes. We agree the required drawings and diagrams in the brief.
Working project
The working project refines the basic-project solutions to a level of detail precise enough to actually build the installation from them. Specific products and materials are defined, and detailed drawings and diagrams are prepared, so the contractor can carry out the work without having to devise the solutions themselves.
Single-line diagrams
A single-line diagram shows the logic of the electrical system: the layout of the connection point, the main board and sub-distributions, the fuses, residual-current devices and the division into groups. It is the document used to understand the structure of the building's power supply as a whole.
Distribution board schemes
For each distribution board we prepare an assembly diagram and the circuit layout: protective gear, group names, cross-sections and loads. A correct board scheme is the basis both for assembling the board and for the later electrical audit and maintenance.
Cabling plans
The layout drawings show the routing of the cable runs, the locations of sockets, switches, luminaires and equipment, as well as the cable types and cross-sections. The plans tie the single-line diagram to the actual floor plan of the building and give the contractor precise installation instructions.
Your design brief
To prepare the design, we need floor plans, a description of the planned changes and details of equipment and its power requirements. If some information is missing, mention this in your enquiry. We will clarify what is needed before work starts.
Who an electrical design project is for
- Developers and construction companies that need the electrical part of a construction project for a building permit
- Owners of hotels, office and commercial buildings who need a complete electrical solution
- Industrial and manufacturing companies where power electrics and distribution boards are being designed
- Owners of buildings under reconstruction where the electrical system is being rebuilt
- Owners applying for an occupancy permit who are missing compliant project documentation
- Builders of detached houses and solar parks who need an electrical and storage project
Electrical design for commercial, industrial and residential buildings
We design systems for sites in Tallinn, Tartu and elsewhere in Estonia. The scope reflects the building’s use and your needs: a new installation, alterations to an existing system or additional equipment. The quote specifies the drawings, diagrams and delivery schedule.
Frequently asked questions about electrical design projects
A new electrical design describes a planned installation. Documentation restoration records an installation that already exists. If you also want to alter the existing system, describe both the missing documents and the planned changes in your enquiry.
The basic design establishes the main electrical solutions and helps define the scope of installation work. The working design specifies the products, materials, drawings and diagrams needed for installation. The required stage and document list depend on the project.
Send the site location, building type, floor plans, planned changes and deadline. Include existing electrical diagrams and power ratings for major equipment where available. State the design stage or how the documents will be used. We can clarify missing information before quoting.
An electrical design may include an explanatory note, schematic diagrams, distribution board diagrams, cabling and lighting plans, and layout drawings. The working design also specifies products and materials. We agree the documents required for your site in the quote.
Cost and timing depend on the building size, system complexity, design stage and the condition of existing plans and information. We prepare a quote after reviewing the site details and brief. One standard price cannot describe projects with different scopes.
Request a quote for your electrical design project
Tell us the site location, building type, planned work and preferred deadline. Email any existing plans, equipment power ratings and electrical diagrams. If you do not know which design stage you need, explain how the documents will be used.