Fuse Board Replacement & Consumer Unit Upgrades — Liverpool
NICEIC-Approved 18th Edition Consumer Unit Installations Across Merseyside And The North West
Maxim Electrical Contractors carry out fuse board replacements and consumer unit upgrades across Liverpool, the Wirral, St Helens, Warrington and the wider North West. Every replacement is wired to BS 7671 18th Edition, signed off with a full Electrical Installation Certificate (EIC) and registered with Building Control under our NICEIC notification scheme — so you don’t have to apply separately.
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When you need a new consumer unit?
You probably need a fuse board upgrade if your existing installation is a wooden or metal-clad rewireable fuse box (pre-1980s), a plastic consumer unit that does not meet modern 17th Edition Amendment 3 requirements (introduced in 2016), a split-load board without RCD protection on every circuit, or if the unit is repeatedly tripping or showing signs of heat damage. An upgrade may also be required where it has been identified in an EICR with C1 or C2 defects, or where additional capacity is needed for new installations such as EV chargers, heat pumps, electric showers or kitchen extensions.
The current 18th Edition regulations require RCD or RCBO protection on most final circuits (typically 30mA), metal consumer unit enclosures in domestic properties, the installation of Surge Protection Devices (SPDs) in most modern systems, and additional AFDD protection in higher-risk environments such as HMOs and care homes.
What's Included In A Maxim Consumer Unit Replacement?
- Pre-installation testing of every existing circuit
- Supply isolation through your DNO (we'll arrange the cut and re-feed)
- New 18th-Edition compliant board — typically Hager, Wylex, MK or Schneider
- RCBO protection per circuit (so a fault on one circuit doesn't kill your whole house)
- Surge Protection Device as standard
- Full insulation, polarity, RCD trip and earth loop testing of every circuit after install
- Electrical Installation Certificate (EIC)
- Building Control notification under our NICEIC scheme
Home Rewiring
Whether you’re renovating your home or addressing outdated wiring, our expert electricians provide complete or partial rewiring solutions to ensure your property is safe, efficient, and compliant with modern electrical standards. We work with minimal disruption to deliver high-quality results that enhance your home’s electrical performance.
EV Charger Installation
As certified specialists in electric vehicle charging, we offer professional installation services for EV chargers at homes, businesses, and public spaces. Our team ensures your charger is installed safely, efficiently, and in compliance with all regulations, making your transition to electric vehicles seamless and stress-free.
Lighting Design and Installation
From enhancing indoor ambiance to improving outdoor security, we offer tailored lighting solutions for homes and businesses. Our services include energy-efficient LED installations, decorative lighting, and robust security lighting systems, all designed to meet your unique style and functional needs.
CCTV and Security System Installation
Protect your property with our advanced security solutions. We install state-of-the-art CCTV systems, alarms, and access control setups, ensuring 24/7 protection for your home or business. Our team provides customized systems to suit your property’s layout and your security requirements.
Electrical Testing and Certification
For peace of mind and regulatory compliance, we provide comprehensive electrical testing and certification services. Whether you need a landlord safety certificate, insurance-related checks, or inspections for new tenancies or property purchases, we ensure your systems meet the highest safety standards.
Fault Finding and Repairs
Experiencing electrical issues? Our skilled electricians specialize in diagnosing and resolving faults such as power loss, nuisance tripping, and overheating cables. We provide fast and effective repairs to restore your electrical systems to full functionality, minimizing downtime and inconvenience.
Domestic, Commercial & Three-Phase Consumer Unit Upgrades in Liverpool
We replace and upgrade:
Domestic single-phase consumer units (typically 4-6 hours, same-day)
Commercial single-phase distribution boards
Three-phase TP&N boards and sub-mains
Sub-board installations for extensions, garages and outbuildings
Out-of-hours and weekend work is available for commercial sites where downtime needs to be minimised.
Why Choose Us
Maxim Electrical Contractors are NICEIC-approved, with all fuse board replacements fully certified and notified to Building Control through our Competent Person Scheme, ensuring every installation meets current BS 7671 requirements and compliance standards without the need for separate applications. We provide fixed-price quotations upfront, with no hidden extras or unexpected costs, giving clear and transparent pricing for every job.
Most domestic consumer unit upgrades are completed the same day to minimise disruption and restore full electrical safety as quickly as possible. Every installation is upgraded to a modern RCBO-per-circuit configuration as standard, rather than outdated split-load systems, improving protection, fault isolation and overall system reliability. All work is fully tested, certified and supported with a 12-month workmanship warranty, alongside manufacturer guarantees on the installed consumer unit for additional long-term assurance.
NICEIC-Registered Experts
Maxim Electrical Contractors are fully NICEIC-registered, ensuring all fuse board replacement and consumer unit upgrade work is completed in line with the highest UK electrical standards.
Fixed Price, No Hidden Costs
We provide clear, fixed-price quotations before any work begins, with no hidden extras or unexpected charges. This ensures transparent pricing for every consumer unit upgrade, whether domestic, commercial or part of a larger electrical improvement project.
Full RCBO Protection as Standard
Every upgrade includes a full RCBO-per-circuit configuration as standard, replacing older split-load systems. This improves electrical safety by isolating faults to individual circuits, reducing the risk of total power loss and improving overall system reliability.
Frequently asked questions
How long does a fuse board replacement take?
A standard domestic consumer unit replacement takes 4 to 6 hours, including testing and certification. Larger properties, three-phase boards or commercial sub-mains take longer. Most jobs are completed in a single working day.
Will I lose power during a consumer unit upgrade?
Yes, the supply must be isolated for the duration of the swap. We schedule jobs to minimise downtime - most domestic upgrades have power restored the same day, often within 4 to 6 hours of arrival.
Do I need to upgrade my fuse board to 18th edition?
There is no legal requirement to upgrade an older board that is still safe and serviceable, but the 18th Edition (BS 7671) requires RCD protection on most circuits, AFDD protection where applicable, and metal enclosures in domestic settings. Older wooden-back, plastic, rewireable-fuse and split-load boards often fail current standards on inspection.
Do you provide an Electrical Installation Certificate?
Yes. Every consumer unit replacement is signed off with a full Electrical Installation Certificate (EIC) and registered with Building Control under our NICEIC notification scheme - you do not need to apply separately.
What is the difference between a fuse board and a consumer unit?
They are the same thing. "Fuse board" is the older name from when boards used rewirable fuses. Modern boards are technically "consumer units" using miniature circuit breakers (MCBs), residual current devices (RCDs) and arc fault detection (AFDDs).
Can you upgrade a commercial or three-phase board?
Yes. We replace and upgrade commercial single-phase, three-phase and TP&N distribution boards, including isolating, re-feeding and re-certifying sub-circuits. We schedule out-of-hours work to keep your business running.
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Reach Us
Ready to start your next electrical project? Whether it’s a small repair or a large installation, our experienced team is here to help. We offer free, no-obligation estimates and expert advice tailored to your specific needs.
With Maxim Electrical Contractors, you can trust that your project will be handled with care, professionalism, and efficiency. Don’t wait – fill out the form to get in touch and take the first step toward safe, reliable, and high-quality electrical solutions.
Your trusted electrician in Liverpool and the North West.