Commercial and industrial power distribution
Commercial Distribution Board Upgrades and Installations
Single and three-phase board replacements, new sub-distribution and capacity-led upgrades for operational premises across Scotland.
WB Electrical surveys the existing arrangement, considers present and future loads and critical circuits, then defines the board, protection, changeover, testing, labelling and handover required for the agreed scope.
Plan the changeover before the board is ordered
A board replacement affects every connected circuit. Early review helps define the equipment, responsibilities and outage window before procurement and site dates become fixed.
Established 1989
Commercial and industrial experience
SELECT registered
Recognised electrical contractor
Single and three-phase
Board and sub-distribution work
Operational sites
Changeover planned for each site
Plan the right level of work
Is a Distribution Board Upgrade the Right Route?
Not every concern requires an immediate board replacement. The right starting point may be an investigation, a defined repair, remedial work, an extension to suitable existing equipment, a new sub-board, or a planned full replacement.
A survey helps establish the condition and suitability of the existing distribution, the incoming arrangement, present and future loads, available ways, protective-device requirements, critical circuits and practical changeover options before the final scope is agreed.
A good starting point when you need to:
- Respond to a confirmed defect, damage or condition concern
- Replace unsuitable, obsolete or poorly maintainable distribution equipment
- Create capacity for a fit-out, extension, new equipment or changing site
- Introduce a new sub-board for a defined floor, unit, process or work area
- Improve circuit identification, segregation or protective arrangements as a designed scope
Common distribution board requirements
What Distribution Board Work Can WB Electrical Deliver?
The final solution depends on the existing distribution, connected loads, required capacity, environment and site operating constraints. These are common starting points for commercial, industrial and public sector enquiries.
Planned Board Replacements
Replacement of existing commercial and industrial boards where condition, capacity, maintainability or a planned installation change supports a new arrangement.
Single and Three-Phase Distribution
Board installations and upgrades for single-phase and three-phase premises, developed around the supply characteristics and connected circuits.
New Sub-Boards and Area Distribution
New sub-distribution for an extension, tenant area, workshop, production zone, plant space or other clearly defined part of a site.
Capacity and Load-Led Upgrades
Distribution changes planned around confirmed new loads, diversity, future growth, spare ways and the suitability of the upstream electrical infrastructure.
Circuit Segregation and Protective Devices
Circuit arrangements and protective devices selected for the intended installation, with critical or operationally sensitive circuits identified during planning.
Labelling, Schedules and Maintainable Handover
Clear circuit identification, board schedules and applicable records to help the client operate, inspect and maintain the completed distribution work.
Prepare the board and site information
What Helps Us Assess the Existing Distribution?
You do not need to open the board or produce a finished specification before making contact. A clear reason for the enquiry and the information already available help us identify the safest and most useful next step.
- Site address, board location and the surrounding environment
- Reason for the enquiry, such as a defect, inspection finding, fit-out, expansion or new load
- Board make, model, phase and rating if these are already known
- Existing circuit schedule, drawings, EICR, thermal report or fault information if available
- Downstream loads, critical circuits and services that cannot lose power without planning
- Future loads, equipment data and the capacity the site is expected to need
- Operating hours, access restrictions and possible outage or changeover windows
For safety, do not remove covers or enter a restricted electrical area to take photographs. A closed-board photograph, visible labels and existing records are enough to begin the conversation. A site review may still be required to verify the installation.
The Board, the Incoming Supply and Everything Downstream
A sound distribution-board decision relies on more than the enclosure itself. The incoming supply and earthing, existing condition, current and future loads, protective-device compatibility, downstream circuits and operating constraints all need to be considered together.
Incoming Supply and Upstream Interface
Available capacity, main switchgear, metering, landlord responsibilities or network-operator work may need to be confirmed. These items can affect the project but may sit outside the board-replacement scope.
Board and Sub-Distribution
WB’s agreed scope may include design inputs, equipment selection, procurement, sub-main or containment alterations, installation, changeover, verification, labelling and the relevant electrical records.
Downstream Circuits and New Loads
Existing circuit defects and new equipment supplies are identified separately from the board scope. A wider condition review can begin with EICR and Fixed-Wire Testing, while new machinery or plant may need Specialist Power Supplies. Smaller circuit changes may suit Additions and Alterations.
From survey to controlled handover
How Distribution Board Work Is Planned
The method is planned around the actual distribution arrangement, affected circuits, safe-isolation requirements and site operations. Phased work, partial shutdowns, temporary arrangements or out-of-hours changeovers are only proposed where the existing installation and agreed design make them suitable.
01
Define the Reason and Future Requirement
We confirm why the work is being considered, what the board supplies now and what the site may need to support in future.
02
Survey the Existing Distribution
The supply, earthing, board, connected circuits, protective arrangements, available capacity, location and access are considered.
03
Agree Design, Equipment and Changeover
The equipment, responsibilities, outage window, critical-circuit plan, access and installation sequence are agreed before work begins.
04
Install, Verify and Hand Over
The agreed distribution work is installed, inspected, tested and labelled, with applicable certification and handover information supplied.
Industrial experience behind the service
Distribution Work Planned Around Live Operations
Since 2016, WB Electrical has supported North British Distillery across its Edinburgh operations. Documented work includes distribution board replacements and upgrades, new circuits and containment, control panels and valve-chamber distribution.
The work has been coordinated around live distillery and warehouse operations, including access, isolation and planned shutdown requirements. It shows why a distribution project needs to account for both the electrical arrangement and the way the site must continue to operate.
- Distribution board replacements and upgrades
- Distribution for site areas, control panels and valve chambers
- New circuits, sub-mains, containment and cable routes
- Testing, circuit identification and records matched to the work completed
Relevant Experience: North British Distillery
WB Electrical’s long-term support includes distribution board replacements and upgrades, new circuits, containment, control panels and distribution work planned around an operational distillery and warehouse environment.
Tell us about the board and requirement
Request a Distribution Board Review or Quotation
Send the board and site information you already have. We will review whether the next step is an investigation, survey, defined remedial, planned replacement, new sub-board or a connected electrical service.
Useful information includes:
- Board location and the area or equipment it supplies
- Reason for the enquiry and any known fault or inspection finding
- Closed-board photographs, schedules, drawings or existing reports
- Critical circuits, operating hours and access restrictions
- Future loads and any preferred outage or changeover window
Prefer to talk first? Call 01698 883232 or email info@wbelectrical.co.uk. For a wider requirement covering several services, use the general project quote form.
Your information will be used to review and respond to this enquiry. Read the WB Electrical Privacy Policy.
After the changeover
Testing, Circuit Identification and Handover
The handover is matched to the distribution work completed. WB Electrical confirms the intended verification, certification, circuit information and any marked-up records as part of the agreed scope.
Inspection and Testing
Inspection and verification appropriate to the new or altered board, connected circuits and affected parts of the electrical installation.
Electrical Certification
The appropriate electrical certificate or test record is supplied where it applies to the completed distribution work.
Circuit Schedules and Labels
The board, protective devices and circuits are identified, with an updated schedule and labels provided as required for the agreed installation.
Marked-Up and Follow-On Information
Drawings or marked-up information are supplied where included, while defects or recommendations outside the completed scope are identified separately.
Power distribution changes with the environment
Distribution Boards Across Working Environments
Occupancy, production, environmental conditions, critical circuits, access and available isolation windows all influence the board specification and changeover plan.
Commercial Property and Multi-Tenant Buildings
Board replacement, landlord distribution and sub-distribution for occupied offices, shared premises, retail units and changing tenant requirements.
Manufacturing and Industrial Sites
Three-phase distribution, new sub-boards and capacity changes planned around production, plant, shutdowns and site controls.
Warehouses and Logistics
Distribution for warehouse zones, loading operations, equipment, charging areas and expansion, with critical operations identified during planning.
Public Sector and Operational Estates
Board and sub-distribution work within operational estates, with access, isolation, communication and handover requirements agreed for the individual premises.
Practical answers before the board scope is agreed
Questions About Commercial Distribution Boards
These answers explain common replacement, capacity, changeover and handover considerations. The final solution still depends on the existing distribution and the needs of the site.
When should a commercial distribution board be replaced?
There is no single age at which every board must be replaced. Replacement may follow an inspection finding, damage, unsuitable or poorly maintainable equipment, inadequate capacity, a change of use, or a planned improvement to the installation. A survey helps distinguish a full replacement from a smaller remedial.
Does WB Electrical install single and three-phase distribution boards?
Yes. WB Electrical undertakes suitable single-phase and three-phase board and sub-distribution work for commercial, industrial and public sector premises. The proposed arrangement is assessed against the supply, connected circuits, loads, environment and site requirements.
Does every distribution board concern require a full replacement?
No. Investigation may identify a fault, a defined repair, a labelling issue, a suitable extension or another contained remedial. Compatibility, condition, capacity and the intended change must be considered before deciding whether replacement is justified.
Can a board be changed without shutting down the whole site?
Some arrangements may support a phased change, partial shutdown, suitable temporary provision or an out-of-hours changeover, but every affected part must still be safely isolated. The available options depend on the distribution topology, critical loads, access and agreed design.
Can you add a sub-board for expansion or new equipment?
Yes, where the incoming arrangement, available capacity, protection, route and existing installation are suitable. The sub-board scope can be coordinated with Specialist Power Supplies when it supports machinery, HVAC, plant or other equipment with specific connection requirements.
What information helps with a distribution board quotation?
Useful information includes the site and board location, what the board supplies, why work is being considered, known inspection or fault information, future loads, critical circuits, operating hours and possible outage windows. Closed-board photographs and existing schedules or reports also help.
What testing and documents will be provided?
The completed work is inspected and tested as appropriate. The relevant electrical certificate or test record, updated circuit schedule, labels and other agreed information are provided where they apply to the completed scope. Marked-up drawings or additional records are supplied where expressly included.
What should we do if a board is hot, damaged, arcing or smells of burning?
Do not open or touch the board, and keep people away from the affected area. Follow established site emergency and isolation procedures only where it is safe and you are authorised to do so, then seek prompt professional assistance. If there is fire or immediate danger, contact the emergency services.
Connected electrical routes
Connected Services Around Distribution Board Work
A board enquiry can reveal connected new-load, circuit-alteration or wider condition requirements. These routes help keep each part of the electrical scope clear.
Planning a board replacement, expansion or investigation?
Tell Us What the Board Supplies and What Needs to Change
Share the board location, reason for the enquiry and any existing information. WB Electrical will help identify the right investigation, survey, quotation or connected service route.