What Is a Consumer Unit (Fuse Box)?
A consumer unit, often called a fuse box, is the main electrical control centre in your property. It distributes power to your circuits and protects them from faults, overloads and electric shock.
Modern units use miniature circuit breakers, RCDs and other protective devices to quickly disconnect dangerous faults.
An outdated or damaged consumer unit can increase the risk of fire, shocks and nuisance tripping, so it is important that it is kept in good condition and meets current safety standards.
Consumer Unit Services
At Highland Sparks Ltd, we provide a full range of consumer unit services to keep your installation safe and up to date. From complete replacements and upgrades to adding extra protection devices, we tailor our work to your home, business and budget.
Our qualified electricians can survey your existing fuse box, advise on the best options, and complete the installation with minimal disruption. We also carry out testing, certification and ongoing support.
Consumer unit upgrades (18th Edition/BS 7671)
If your existing consumer unit is basically sound, we can upgrade it to meet the latest 18th Edition / BS 7671 standards.
This may include adding extra RCD or RCBO protection, tidying up wiring, fitting blanks and labels, and making sure your installation offers better protection against shock and fire.
Consumer unit replacement
We remove old fuse boards or unsafe consumer units and replace them with modern, metal-clad units that meet current regulations.
Our electricians size and label every circuit correctly, test all protective devices and provide certification, so you know your new installation is safe and compliant.
RCD/RCBO retrofits
Residual Current Devices (RCDs) and RCBOs greatly reduce the risk of electric shock and can prevent fires caused by earth faults.
We can retrofit these units into suitable boards, providing extra protection for sockets, lighting, outdoor circuits and bathrooms. Our team will test each circuit to confirm correct operation.
Surge Protection Device (SPD) installation
Surge Protection Devices (SPDs) help protect sensitive equipment such as TVs, computers, alarms and charging points from power surges and transient overvoltages.
We install SPDs in new and existing consumer units, helping to reduce the risk of damage during switching events or lightning activity on the supply network.
Earthing and bonding upgrades
Good earthing and bonding are essential for electrical safety. We upgrade main earth cables, water and gas bonding to current standards, helping protective devices operate correctly during a fault.
Our electricians test and record earth readings, giving you confidence that your installation is safe and correctly bonded.
Fault finding and tripping diagnostics
If your consumer unit keeps tripping or certain circuits fail often, we can help. Our electricians carry out methodical fault finding to locate wiring faults, damaged accessories or overloaded circuits.
Once we have found the cause, we explain your options clearly and carry out repairs with your approval.
What’s Included in Our Fuse box Replacement Service
Our consumer unit replacement service is designed to be clear, safe and straightforward from start to finish. We begin with an on-site assessment of your existing fuse box, circuits and main earthing.
You will receive clear advice on suitable replacement options, including ways to improve protection for bathrooms, outdoor sockets and high-demand appliances.
On the installation day, we'll safely isolate the supply, remove the old unit, label and connect each circuit, and fit RCDs, RCBOs, SPDs, and upgrade the earthing if it's required. We then fully test the system, restore the power, tidy up, and issue all the relevant certifications.
Get a Consumer Unit Replacement Quote
If you think your fuse box or consumer unit is outdated, unsafe or causing problems, Highland Sparks Ltd is here to help. Contact us today for a clear, no-obligation replacement quote tailored to your home or business. We will arrange a convenient visit, inspect your existing installation and explain your options in plain language.
You will receive a detailed written quotation outlining the work included, any recommended upgrades and the total cost. With flexible appointment times, friendly, qualified electricians and transparent pricing, we make upgrading your consumer unit simple, safe and stress-free.
Whether you need a like-for-like replacement, extra capacity for new circuits or improved protection for vulnerable areas, we will design a solution that suits your property and budget.
Electrical Inspections Tain
Comprehensive visual and instrument testing identifies wear, damage, and non-compliance before it becomes dangerous. Receive a clear report with prioritised recommendations to keep your installation fully aligned with current safety standards.
PAT Testing Tain
Portable Appliance Testing verifies that kettles, computers, power tools, and other plug-in devices are safe to use. We label each item, log results digitally, and remind you ahead of renewal deadlines.
Electrical Rewiring Tain
Replace ageing cabling with modern, low-smoke, PVC-free wiring for improved capacity and fire resistance. We minimise disruption, protect furnishings, and leave walls ready for decoration once thorough circuit tests are complete.
