
Lack of RCD Protection – Older boards often lack life-saving Residual Current Devices (RCDs) that disconnect power in milliseconds to prevent fatal electric shocks.
No Surge Protection (SPD) – Obsolete units cannot protect your sensitive electronics (TVs, PCs, and smart appliances) from power surges and grid spikes.
Fire Hazards in Plastic or Wood – Older plastic or wooden-backed boards are combustible. Modern 18th Edition boards use non-combustible metal enclosures to contain potential electrical fires.
Overloaded Circuits – Modern homes use more power than ever. Old fuse wire systems weren't designed for EVs, induction hobs, or high-powered showers, leading to overheating and "nuisance tripping."
Outdated "Rewireable" Fuses – Manually replacing fuse wire is dangerous and prone to human error. Modern circuit breakers (MCBs) provide instant, safe, and easy-to-reset protection.
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We assess your current fuse board and wiring to identify safety risks and provide a transparent, fixed-price quote with no obligation.
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We book a time that suits you. Most upgrades take 4–6 hours, and we’ll ensure you know exactly when the power will be off and back on.
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AH Electrical Services installs your modern 18th Edition metal consumer unit, including full surge protection and RCD safety as standard.
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Every circuit is rigorously tested. You receive a full circuit schedule and an Electrical Installation Certificate (EIC) for your records.







Most consumer unit upgrades in Blackburn take between 4 to 6 hours. We typically aim to have your power back on by early afternoon. We provide plenty of notice so you can plan around the downtime.
Prices vary based on the number of circuits and the type of protection required (e.g., Surge Protection). However, we provide fixed-price quotes following a free visual inspection, so there are never any hidden "surprise" costs.
Yes. Under the 18th Edition Wiring Regulations, surge protection is now a standard requirement. It protects your expensive electronics—like TVs, computers, and smart appliances—from damaging power spikes and grid surges.
Yes. Every installation is carried out to the 18th Edition Wiring Regulations (BS 7671) standards. We focus on ensuring your home is technically safe, fire-protected, and equipped with modern safety devices like RCDs and Surge Protection.
Minimal. Since we are replacing the central hub rather than rewiring the whole house, the work is concentrated in one area. We use dust extraction and ensure the work area is left exactly as we found it—just with a much safer electrical board.
Safety is the primary reason. Older boards often lack the technology to handle modern electrical loads or provide protection against fatal shocks. Upgrading to a fire-rated metal unit with built-in safety switches significantly reduces the risk of electrical fires in your home.
Contact us via the form in the 'Contact Us' page or phone to book your free consumer unit upgrade assessment. We’ll review your needs and provide a detailed, no-obligation quote within 24–48 hours.
Call Now to Speak with a Fuse Box Specialist: 07427 927734
44 Darwen St, Blackburn BB2 2BH
AH Electrical Services 2026