A fuse box—now known as a consumer unit—is the central hub of your home’s electrical safety system. Whether you're upgrading an old system, experiencing frequent tripping, or preparing your property for sale or letting, replacing your consumer unit is a critical investment in safety and compliance.
At RCD Electrical, we specialise in fast, compliant, and fully certified fuse box and consumer unit replacements for domestic properties across London.
What Is a Consumer Unit?
A consumer unit is the modern equivalent of the traditional fuse box. It controls and distributes electricity to circuits in your home, such as lighting, sockets, kitchen appliances, and more. Most importantly, it protects you from:
Modern consumer units are fitted with RCDs (Residual Current Devices) and MCBs (Miniature Circuit Breakers) which cut off power in milliseconds if a fault is detected.
Why Replace an Old Fuse Box?
Many homes in the UK still have outdated fuse boxes with rewireable fuses or no RCD protection. These units do not meet current safety standards and can put occupants at serious risk.
You should consider replacement if:
-
Your fuse box is over 25 years old
-
There’s no RCD protection
-
You frequently experience tripped circuits
-
You're selling or renting your property
-
You’re renovating or adding new circuits
At RCD Electrical, we replace old fuse boxes with modern 18th Edition compliant consumer units for long-lasting safety and peace of mind.
Cost of Consumer Unit Replacement
| Factor |
Impact on Cost |
| Number of circuits |
More circuits = more materials and time |
| Existing wiring condition |
Poor wiring may need upgrading |
| Property size |
Larger homes take more time |
| Location |
London prices may be slightly higher |
At RCD Electrical, our pricing includes:
-
New 18th Edition consumer unit
-
RCD/MCB protection for all circuits
-
Full testing and certification (EIC)
-
Labour and disposal of old fuse box
No hidden charges. No surprises.
What’s Included in the Replacement?
When you book a consumer unit replacement with RCD Electrical, here’s what to expect:
-
Initial safety check
-
Removal of old fuse box
-
Installation of new consumer unit
-
Testing of all circuits
-
Issuing an Electrical Installation Certificate (EIC)
-
Labelling each circuit clearly
We ensure your new unit complies fully with BS 7671 Wiring Regulations and Part P of the Building Regulations.
How Long Does It Take?
A typical replacement takes 4–6 hours, but this may vary depending on:
We aim to complete the job in one visit and cause minimal disruption. If rewiring or extra work is needed, we'll discuss this with you before proceeding.
Is It a Legal Requirement?
There’s no legal obligation to upgrade your fuse box unless major work is being done. However, landlords must ensure RCD protection is in place to meet EICR requirements.
If you're buying, selling, or letting a home, replacing an outdated consumer unit is often necessary to satisfy safety standards and pass inspection.
Why Choose RCD Electrical?
We are a trusted team of NICEIC-certified electricians with years of experience in domestic installations across London. Here’s what you can expect from us:
Transparent pricing
Fully insured & guaranteed work
Professional, polite engineers
Fast turnaround and certification
Ongoing support and advice
We don’t just install—we explain your new unit and provide easy-to-understand labelling so you’re confident using it.
Book Your Replacement Today
Don’t wait until there’s a problem. An outdated fuse box is not just inconvenient—it can be dangerous. Call RCD Electrical today to book your fuse box or consumer unit replacement and take a proactive step toward home safety.
Call: 02034882928
Email: info@rcdelectrician.co.uk