Sussex Electrical Specialists
SussexFusebox Upgrades& Additions
Outdated fuse boards don't meet current regulations and put your home at risk. Our qualified engineers upgrade consumer units with full RCD and RCBO protection,completing most jobs in a single day.
Trusted by 2000+ Homes in Sussex
What We Do
Consumer Unit Upgrade Specialists
Outdated fuse boards are a liability. If your consumer unit still has rewireable fuses, lacks RCD protection, or keeps tripping, it's time for an upgrade to a modern unit with full circuit protection.
Modern consumer units are designed to meet current building regulations and protect your installation. We install units fitted with RCDs (Residual Current Devices) and RCBOs (Residual Current Breakers with Over-current protection), providing the best protection against electric shock and fire risk.
Our upgrades include a complete test and inspection certificate confirming the work meets BS 7671 standards. We also add new circuits for EV chargers, electric showers, extended kitchens, garden supplies, or any other requirement, all wired safely back to the new consumer unit.
Most domestic consumer unit replacements are completed within 4–8 hours on a single day. We work across East and West Sussex and cover landlord properties, commercial premises, and residential homes.
Same Day
Most Upgrades
How It Works
The Upgrade Process
From survey and quote to installation and testing,here is exactly what to expect when you choose us for your consumer unit upgrade.
Survey & Quote
We attend to survey your existing installation, check your circuits, and provide a fixed-price quote for the upgrade before any work begins.
Safe Isolation
Your existing supply is safely isolated and the old consumer unit removed. We check all circuits for pre-existing faults before installation.
Install & Connect
The new consumer unit is installed, all circuits connected and labelled, and supplementary bonding checked and upgraded where required.
Test & Certificate
Every circuit is fully tested to BS 7671, and a Minor Electrical Installation Works Certificate or EICR is issued before we leave.
25+
Years Experience
Why Choose Us
Part P Registered, Transparent Pricing & Certified Engineers
Consumer unit upgrades are a serious undertaking that must be carried out correctly and certified to building regulations. Our engineers are Part P registered and City & Guilds certified, with full professional indemnity insurance.
We believe in transparent, fair pricing,you'll receive a fixed-price quote before any work begins. No hidden call-out fees, no surprise invoices. We explain what you're paying for and why.
With 25+ years of combined experience, our team has upgraded consumer units for thousands of homes and businesses across East and West Sussex. We carry specialist test equipment and ensure every installation meets current standards with full documentation issued on completion.
Services we're offering
Full Consumer Unit Replacement
Complete replacement of your existing fuse board with a modern unit offering full RCD and RCBO circuit protection. Most replacements completed in a single day.
RCBO Consumer Units
High-specification boards with individual RCBOs per circuit. A fault on one circuit cannot trip others,the gold standard in protection.
Additional Circuit Installation
New circuits added for EV chargers, garden power, extensions, electric showers, cookers, or home offices,wired from your consumer unit.
EV Charger Circuit
Dedicated EV charging circuit installed from your consumer unit. Includes all wiring, dedicated breaker, and earth bonding.
Emergency Consumer Unit Replacement
Same-day emergency replacement of failed, overheated, or damaged consumer units. Available 24/7 across Sussex.
Landlord Upgrades
Priority consumer unit upgrades for landlords. Ensures EICR compliance and tenant safety. Full certificates issued.
Fast Response
With you in
30–90 minutes
For emergency consumer unit faults, we're with you fast. Our qualified engineers cover East and West Sussex, positioned strategically to provide rapid response. Most consumer unit upgrades are completed same day or the next day.
Available 24 hours a day, 7 days a week,including bank holidays,our Part P registered engineers carry full test equipment and are experienced in RCD testing, circuit diagnosis, and modern consumer unit installation. We aim to restore full power and provide a completion certificate on the first visit.
Customer Reviews
What Our Clients Say
Consumer Unit Upgrade Services
Complete consumer unit upgrades and replacements for every type of property. From full fuse board replacement and RCD/RCBO installation to new circuit additions for EV chargers, electric showers, cookers, and extensions,all carried out by Part P registered engineers to BS 7671 standards.
Common Questions
Frequently Asked Questions
Ready for a
Fusebox Upgrade?
Get a fixed-price quote today. Our qualified engineers cover the whole of East and West Sussex,most jobs completed in a single day.
Complete Guide
Why Upgrade Your Consumer Unit?
Old Boards Are a Fire Risk
Rewireable fuse boards and early MCB units were built to outdated standards. They lack the RCD protection required by BS 7671 to detect earth faults, meaning a damaged cable or faulty appliance can go undetected long enough to cause a fire or a fatal electric shock. A modern consumer unit with RCD or RCBO protection will disconnect the circuit within 40 milliseconds of detecting a fault. We install metal consumer units as standard — metal enclosures are fire-rated and contain any internal fault, unlike plastic units which can melt and spread fire.
Required by Current Regulations
BS 7671 (the IET Wiring Regulations) require all new and significantly altered installations to incorporate RCD protection. The 18th Edition Amendment 2 (2022) now mandates Surge Protection Devices (SPDs) on most new domestic consumer unit installations — protection against voltage spikes that can destroy electronics and appliances. If you are selling a property, adding a new circuit, or have received a poor EICR, you will likely be required to upgrade. Landlords in particular face legal obligations under the Electrical Safety Standards in the Private Rented Sector Regulations 2020.
Modern Homes Need More Circuits
EV chargers, electric showers, induction hobs, home offices, and outbuildings all demand dedicated circuits. Older consumer units rarely have the spare ways or adequate protection to accommodate them safely. An upgrade gives you the capacity to add circuits now and in the future without compromising the integrity of the installation.
Signs You Need a Consumer Unit Upgrade
Types of Consumer Unit
Split Load
•£500–£800
The most common and cost-effective upgrade. Circuits are split into two groups, each protected by a single RCD. If one RCD trips, half your circuits go off — but the other half stay live. Suitable for most straightforward domestic replacements.
- Most affordable option
- Suitable for standard domestic properties
- Faster to install than full RCBO boards
- Complies with current BS 7671 regulations
RCBO Full Protection
•£600–£900
Every circuit has its own individual RCBO (a combined MCB and RCD in one device). If any single circuit trips, only that circuit is affected — the rest of your home stays powered. The highest standard of domestic protection available.
- Individual circuit protection — one fault, one circuit off
- No nuisance tripping affecting unrelated circuits
- Recommended for larger properties and new builds
- Ideal where any loss of power is disruptive (medical equipment, freezers)
Protection Included
Full BS 7671 Coverage
- RCD or RCBO protection on every circuit
- Metal (fire-rated) enclosure as standard
- Surge Protection Device (SPD) fitted to board
- Earth fault protection — disconnects within 40ms
- Overcurrent protection on every final circuit
- Polarity, insulation, and continuity verified on all circuits
How Long It Takes
4–8 Hours
- Most domestic replacements completed in a single day
- Power is off only while the new unit is being connected
- Larger installations or commercial boards may take longer
- We always aim to restore full power before we leave
Certification
BS 7671 Compliant
- Every upgrade includes a signed test and inspection certificate
- All circuits tested for continuity, insulation, and polarity
- Loop impedance and RCD operating times verified and recorded
- Certificate issued to you and registered with Part P