Your consumer unit – the fuse box, if we are being honest with ourselves – is the single most important safety device in your home. It also happens to be the one nobody ever looks at until it starts making a noise. If yours is more than twenty years old, it almost certainly is not doing the job a modern one would.
Signs your fuse box is quietly past it
- Rewireable fuses – little ceramic holders with actual fuse wire in them
- No test button anywhere on the unit (that means no RCD protection)
- A wooden backing board, which is a proper period feature and not in a good way
- Breakers that trip for fun, or one that flatly refuses to reset
- Scorch marks, buzzing or a warm smell – stop reading and call us
- An EICR that came back unsatisfactory with board findings
What a modern unit actually does for you
Current standards require RCD or RCBO protection, which cuts the power within a fraction of a second if it senses current leaking to earth – the fault behind most electric shocks. An old fuse board simply cannot see it coming. Since 2016, domestic boards also have to be non-combustible, which is the polite reason yours is now metal rather than plastic. Electrical Safety First has a good plain-English explainer if you like to read up first.
What the job involves (and what it does not)
We isolate the supply, fit the new unit, test every circuit and hand you the certification. Most domestic replacements are a half-day job with the power off for a few hours – time enough for a decent cup of tea and a bit of a tidy.
Occasionally, once the old board is off, we find something that needs sorting first – inadequate earthing or main bonding is the usual one on older installations. We will always tell you before we touch it, never after the invoice.
Certified and notified, properly
Consumer unit replacement is notifiable work under Part P of the Building Regulations. We are NICEIC approved and on the Competent Person scheme, so we certify and notify it for you and you get the paperwork you will want when you come to sell.
Free estimates
We cover Dagenham, Barking, Ilford, Romford and across East London, 24 hours a day with no call-out fee. Call 07502 396654 or see our fault finding and rewiring services.
RCD, RCBO and MCB – what the letters actually mean
The jargon around consumer units is genuinely offputting, so here is the plain-English version. An MCB (miniature circuit breaker) protects the wiring from overload and short circuits – it is what trips when you overload a circuit. An RCD (residual current device) is the life-saver: it detects current leaking to earth, the fault behind most electric shocks, and cuts power in a fraction of a second. An RCBO combines both into a single device that protects one circuit on its own. Older boards often have neither RCD protection nor individual circuit protection, which is exactly why they are worth replacing.
Why RCBOs are usually worth it
On a board protected by one or two shared RCDs, a single fault – a failed kettle, say – can take out half the house, including the freezer and the heating, until someone works out what happened. Fit the board with individual RCBOs and that same fault only trips the one affected circuit, leaving everything else running. It costs a little more up front, but if you have ever come home to a defrosted freezer because something tripped while you were out, you already understand the value.
What happens on the day
A typical replacement runs like this: we isolate the supply, remove the old board, fit and wire in the new unit, then test every single circuit end to end – earth continuity, insulation resistance, polarity and RCD operation – before handing you the certification. The power is off for a few hours, so it is worth planning around, but most domestic jobs are done comfortably within half a day. If we uncover a pre-existing issue such as inadequate earthing or bonding, which is common on older installations, we explain it and quote before doing anything extra.
How long will a new board last?
A quality consumer unit, properly installed, should give you a good 25 years or more of service. The standards do change over time – the move to metal enclosures in 2016 is a recent example – so it will not be the last word forever, but a modern board fitted today will keep your home safe and compliant for a very long time. It also makes your property easier to sell, because a dated fuse box is one of the first things a buyer’s surveyor flags.
Not sure if you need one?
If you are unsure, the sensible first step is an EICR, which gives you a documented assessment of the whole installation, board included. We will never talk you into a replacement you do not need – if your board is fine, we will happily tell you so. Call 07502 396654 for honest advice and a free estimate.
Landlords and consumer units
If you let a property, the consumer unit is one of the first things an EICR will scrutinise, and an old board with no RCD protection is a common reason for a report coming back unsatisfactory. Upgrading it not only resolves the finding but genuinely improves tenant safety, and it is a fixed, predictable cost we can quote for upfront. We can carry out the EICR and the board replacement together, then re-issue the certificate, so you deal with one team from start to finish.
Common questions about fuse box replacement
How long does it take? Most domestic replacements are a half-day, with the power off for a few hours. Will you make a mess? No – it is a clean job and we tidy up fully. Do I get certification? Yes, full certification, notified under Part P, which you will want when you sell. What if you find other problems? We tell you and quote before doing anything extra – never a surprise on the invoice. Is it worth upgrading if mine still works? If it has no RCD protection, yes; “still working” and “safe by modern standards” are not the same thing.
Book your replacement
We fit and replace consumer units across Dagenham, Barking, Ilford, Romford and across East London, with no call-out fee and a clear price agreed before we start. Call 07502 396654 or get in touch for a free estimate.
Recognising an older board
You do not need to be an electrician to spot a board that is due attention. If yours is a cream or grey plastic unit with a row of black rectangular switches and no obvious “TEST” button, it very likely has no RCD protection. If it is older still – a wooden-backed box, or one with pull-out ceramic fuse holders and actual fuse wire – then it belongs to a different era of electrical safety altogether. Brands like older Wylex, MK and Crabtree rewireable units served their time well, but “still working” is not the same as “protecting you to modern standards”, and that gap is exactly what an upgrade closes.
Earthing and bonding – the part nobody sees
A consumer unit is only as good as the earthing behind it. On older installations we quite often find the main earthing conductor is undersized, or that the main bonding to the gas and water services is missing or inadequate. These are not optional extras – they are a fundamental part of what makes the whole system safe – so where we find them lacking during a board replacement, we will explain why they matter and include putting them right in a clear, upfront quote. It is the difference between a board that looks modern and an installation that genuinely is.
A quick word on why the standards changed
The requirement for metal (non-combustible) consumer units came in during 2016 after a spate of fires that started in plastic boards, often due to poorly-made connections overheating. It is a good example of how the wiring regulations evolve in response to real-world evidence, and why an installation put in decades ago can be perfectly legal for its time yet well short of what we would fit today. Upgrading is not about chasing fashion; it is about bringing a critical piece of safety equipment up to what we now know works. Call 07502 396654 to talk it through.
Book your fuse box replacement
A modern consumer unit is one of the most worthwhile safety upgrades you can make to a home, and it is a straightforward, same-day job for our team. We assess what you have, explain your options in plain English, give you a clear fixed price with no surprises, and carry out the work cleanly with full certification at the end. Serving Dagenham, Barking, Ilford, Romford and the whole of East London, 24 hours a day, with no call-out fee. Call 07502 396654 or get in touch for a free, no-obligation estimate.