Fuse Board Upgrade in Accrington - What Every Homeowner Needs to Know

Published September 2026 | Fuse Board Upgrade

We asked our Electrician engineers the questions Accrington homeowners ask most about fuse board upgrades - from spotting the early warning signs to understanding exactly what the work involves and what it costs.

What exactly is a fuse board, and is it the same as a consumer unit?

A fuse board and a consumer unit are the same thing - the central hub that distributes electricity around your home and protects each circuit from overloads and faults. The terms are used interchangeably, though "consumer unit" is the correct term you'll find in current wiring regulations. The confusion usually comes from age. Older properties have traditional fuse boards fitted with rewirable ceramic fuses - lengths of thin wire that melt and break a circuit when there's a fault or overload. You'd have to replace the fuse wire by hand before power would return. Modern consumer units use miniature circuit breakers (MCBs) instead. These do the same protective job, but they trip and can be reset with a flick of a switch.

That's not just a convenience upgrade, though. The bigger difference with modern consumer units is the inclusion of residual current device (RCD) protection. An RCD monitors the flow of electricity through a circuit and cuts power within 40 milliseconds if it detects a fault that could cause electrocution - far faster than the human heart takes to go into fibrillation. Older fuse boards rarely have this, and that protection gap is one of the main reasons our engineers recommend upgrading when we visit properties across Accrington and the wider Lancashire area.

How do I know if my fuse board needs replacing?

There are several signs that a fuse board is past its best, and they range from obvious to easy-to-miss. The clearest indicator is the type of protection fitted. If your board uses old-style rewirable ceramic fuses rather than MCBs, it almost certainly needs replacing. If it doesn't have RCD or RCBO protection - which you can identify by the absence of a test button on the unit - that's another strong reason to consider an upgrade.

Beyond the components themselves, watch for these warning signs:

• Fuses blowing or circuits tripping repeatedly under normal household loads
• Scorch marks, discolouration, or a burning smell around the board
• A buzzing or crackling sound coming from the unit
• The board or surrounding area feeling warm to the touch
• You're unable to add new circuits without the board being full
• The board is made of older plastic that's yellowed or become brittle

We also see a lot of homes in Accrington where the fuse board is simply very old - sometimes 30 or 40 years without inspection or upgrade. If you've moved into an older property and can't find any record of recent electrical work, an Electrical Installation Condition Report (EICR) is the sensible first step. It gives you a clear, documented picture of the installation's current condition before any decisions are made.

What are the most common reasons homeowners book a fuse board upgrade?

In our experience, the trigger for most fuse board upgrades falls into one of a few categories. The first is an EICR that returns with a C1 or C2 code against the consumer unit - meaning there's a danger present or a potentially dangerous condition that needs addressing. Mortgage lenders and insurers increasingly request EICRs before completion or renewal, so this catches a lot of homeowners off guard.

The second common reason is a planned home improvement. Adding an EV charger, a home office circuit, a new kitchen, or a garden outbuilding all require additional circuits - and if the existing board is already full or inadequate, an upgrade has to happen first. We've had a significant uptick in this type of job across Accrington over the last few years as electric vehicle ownership rises and people invest more heavily in home working setups.

A third driver is selling a property. Solicitors and surveyors pick up on outdated electrical installations, and buyers are increasingly aware that an old fuse board without RCD protection represents a genuine risk. Sorting it before listing avoids renegotiation and delays. Finally, some homeowners simply had an incident - repeated tripping, a small electrical fire, or an appliance behaving oddly - and decided enough was enough.

What does a fuse board upgrade actually involve?

A fuse board upgrade means removing the old unit and replacing it with a modern consumer unit that meets the current edition of BS 7671, the UK wiring regulations. In most cases, this also involves inspecting and testing the existing circuits before connecting them to the new unit - partly to check they're in good enough condition to be reconnected, and partly because the electrician takes on a degree of responsibility for the installation once the new unit is fitted.

The process typically follows these steps:

1. The electricity supply to the property is isolated at the meter tails or at the service head
2. The old consumer unit is removed and the incoming meter tails are assessed
3. Each existing circuit is tested for insulation resistance and continuity
4. The new consumer unit is fitted and secured - current regulations require it to be housed in a non-combustible metal enclosure
5. Each circuit is reconnected to the appropriate MCB or RCBO
6. Full function testing is carried out before power is restored
7. An Electrical Installation Certificate is issued to document the work

The metal enclosure requirement came in with the 2016 amendment to the 18th Edition wiring regulations - it's there to reduce fire risk if a fault occurs inside the unit itself. Any electrician fitting a plastic consumer unit in a domestic property today is working outside current regulations.

How much does a fuse board upgrade cost in Accrington?

Costs vary depending on the size of the property, the condition of the existing wiring, and how many circuits need to be accommodated. For a standard mid-terrace or semi-detached home in Accrington - the kind of three or four-bedroom property that makes up a large part of the local housing stock - a fuse board upgrade typically costs between 500 and 750 pounds. That covers supply of the consumer unit, installation, testing, and the Electrical Installation Certificate.

Larger properties with more circuits, or homes where remedial work is needed to bring existing wiring up to a standard where it can safely be connected, will cost more - often between 750 and 1,100 pounds or higher. If the meter tails (the cables running from the meter to the consumer unit) are undersized or in poor condition, those may need replacing too, which adds to the overall cost.

It's worth being cautious of very low quotes. A fuse board upgrade done properly takes time - you can't rush the testing phase - and the materials themselves have a cost. A quote that seems remarkably cheap may mean corners are being cut on testing, or that the new unit being fitted doesn't meet current standards. Always ask for an Electrical Installation Certificate on completion. If a contractor won't issue one, that's a serious red flag.

How long does a fuse board upgrade take?

For most domestic properties, a fuse board upgrade takes between three and six hours. The testing and inspection of existing circuits is often what takes the most time - particularly in older homes where the wiring hasn't been touched in decades and documentation is limited or non-existent.

During the upgrade, the power to your property will be off. In most cases, this is a continuous outage for the majority of the working period, with power restored once the new unit is fitted and tested. If you work from home or have medical equipment that requires a constant power supply, it's worth discussing this in advance with the engineer so it can be planned around. For most households in Accrington, a full day without power is manageable with a bit of forward planning - charge devices overnight, keep the fridge closed, and have a flask of hot water ready.

There are some situations where the work takes longer - if remedial work on existing circuits is identified during testing, or if the incoming supply position needs adjusting. A good electrician will flag these possibilities during the survey or initial visit rather than presenting surprises on the day.

Do I need building regulations approval for a fuse board upgrade?

Yes. A consumer unit replacement falls under Part P of the Building Regulations in England and Wales, which covers electrical safety in dwellings. This means the work must either be carried out by a registered electrician who is a member of a competent person scheme (such as NICEIC, NAPIT, or ELECSA), or it must be notified to your local authority building control department for inspection and certification.

In practice, the vast majority of fuse board upgrades in Lancashire are carried out by registered electricians operating under a competent person scheme. The scheme allows them to self-certify their work and issue the relevant certificates without requiring a separate building control inspection. When the work is complete, your local authority should be notified automatically by the scheme, and you'll receive an Electrical Installation Certificate along with a Building Regulations compliance certificate.

Keep these documents. They'll be requested when you sell the property, and they demonstrate to future buyers, solicitors, and insurers that the work was done correctly and in line with regulations. If you can't locate certificates for past electrical work, an EICR is the way to establish a documented baseline going forward.

What is the difference between RCDs and RCBOs, and which should my new board have?

This is a question we get regularly, and it's a good one. Both RCDs and RCBOs provide protection against electric shock by detecting earth faults and cutting power rapidly. The difference lies in how they're configured.

A traditional consumer unit might use one or two RCDs covering multiple circuits each. The problem with this arrangement is that if an RCD trips due to a fault on one circuit, it takes out every other circuit on that same RCD at the same time. So a faulty bathroom shaver socket might cut power to your upstairs lighting, your bedroom sockets, and your smoke alarms simultaneously. In older split-load boards, you lose half the house in one go.

RCBOs combine the earth fault protection of an RCD with the overcurrent protection of an MCB into a single device - one per circuit. If a circuit develops a fault, only that circuit trips. Everything else in the house stays on. This makes fault-finding much easier and means your household isn't thrown into complete darkness because of an isolated problem. Most modern consumer units installed today in Accrington and across Lancashire use RCBOs on all or most circuits, and this is the setup we'd typically recommend for new installations. It costs a little more in materials but pays off in reliability and convenience over the lifetime of the board.

Can I use the Voltrade GoFIX tool before booking, and what will an engineer check when they arrive?

Yes - the Voltrade GoFIX diagnostic tool is a useful starting point if you're not sure whether you actually need a full upgrade or whether something else is causing your electrical issues. You can run through a series of guided questions about your current setup, the symptoms you're experiencing, and the age of your installation. GoFIX will help narrow down whether the issue is likely to be with the consumer unit itself, with a specific circuit, or with an appliance or wiring issue elsewhere. That saves time and means the engineer who attends already has relevant context before they arrive.

When an engineer visits for a fuse board upgrade job, they'll typically start by assessing the existing installation - looking at the type and age of the current unit, the condition of the meter tails, whether the circuits are labelled correctly, and whether there are any obvious faults or remedial issues that need addressing before the new unit can be connected. They should also talk you through the options for the replacement unit, including how many ways you need, whether you want RCBO protection throughout, and where any new circuits might need to be accommodated. A thorough assessment at the start avoids the kind of mid-job surprises that push costs up unexpectedly.

Is it worth upgrading the fuse board in an older property you've just bought?

Almost always, yes. Older Lancashire properties - Victorian terraces, inter-war semis, postwar builds - were wired for a very different pattern of electricity use. A household in the 1970s might have had a cooker, a fridge, and a television. Modern homes run electric showers, dishwashers, washing machines, tumble dryers, induction hobs, gaming setups, multiple televisions, EV chargers, and a battery of smart home devices simultaneously. The electrical demand is fundamentally different, and a 40-year-old fuse board simply wasn't designed with that load in mind.

Beyond capacity, there's the protection issue. An old board without RCD protection leaves every person in the house more exposed to shock risk than they would be with a modern unit. The cost of an upgrade - typically 500 to 750 pounds for a standard property - is modest relative to the value of the property and the protection it provides. If an EICR has already flagged issues with the installation, addressing the consumer unit at the same time as any remedial circuit work often makes financial sense too, since the board will need to come off anyway.

For homeowners in Accrington buying older stock, we'd generally say: get the EICR done first, see what it flags, and make decisions from there. But if the board is visibly old and lacks RCD protection, budgeting for an upgrade in the first year is a reasonable approach regardless of what the report says.

Fuse board upgrades aren't glamorous, but they're one of the most important safety investments you can make in an older home. If you're unsure about the state of your installation, the best first step is always a proper assessment by a registered electrician - not guesswork. Our engineers work across Accrington and the surrounding Lancashire area and can give you a clear picture of what your property actually needs, without upselling work that isn't warranted.

How long does a fuse board last before it needs replacing?

A modern consumer unit installed to current regulations typically has a working life of 20 to 25 years or more, though it should be inspected every ten years or when a property changes hands. Older fuse boards with rewirable fuses may be considerably older than this and offer no RCD protection, making them a priority for replacement regardless of whether they're currently causing problems.

Can I stay in the house while the fuse board is being upgraded?

Yes, in most cases. The work is carried out with the power isolated, so your home will be without electricity for most of the working period - typically three to six hours. There's no need to vacate the property, though it's worth planning around the outage, particularly in winter or if you have young children or medical equipment that depends on power.

It can be. Some insurers ask about the age and type of consumer unit when calculating premiums or deciding whether to offer cover, particularly for older properties. An outdated fuse board without RCD protection may be viewed as an increased risk. Upgrading to a modern consumer unit and retaining the Electrical Installation Certificate can help demonstrate that the installation meets current safety standards.

Do I need to notify anyone before booking a fuse board upgrade?

You don't need to arrange building control separately if you use a registered electrician operating under a recognised competent person scheme such as NICEIC or NAPIT. The electrician self-certifies the work and notifies the relevant authority on your behalf. You should receive both an Electrical Installation Certificate and a Building Regulations compliance certificate on completion of the work.