Consumer unit & fuseboard upgrades

Modern protection.
Honest advice.

Consumer unit and fuseboard upgrades for homes and small businesses across Dudley, Sedgley, Wolverhampton and surrounding West Midlands areas—assessed properly, installed neatly, tested and certified.

Start a WhatsApp quote →Call Shaun

Modern FuseBox consumer unit with individual RCBO protection installed by SL4 Electrical Services — Genuine SL4 workConsumer unit and fuseboard upgrades

FuseBox RCBO consumer unit installed by SL4 Electrical Services

Consumer unit upgrade with RCBO and surge protection completed by SL4 Electrical Services

Modern FuseBox consumer unit installation in Dudley

What’s included

Professional from
start to finish.

SL4 replaces older fuseboards where an upgrade is appropriate, installs modern RCBO consumer units and secondary distribution boards, and completes the earthing, bonding, inspection and certification that a professional changeover requires.

Consumer unit replacements

Fuseboard replacements, RCBO consumer units and upgrades of older rewireable equipment where assessment shows that replacement is appropriate.

RCBO circuit protection

Each circuit has its own residual-current and overcurrent protection, so a fault on one circuit is less likely to disconnect unrelated circuits.

Surge protection

A Type 2 Surge Protection Device helps limit short voltage spikes that could otherwise damage sensitive electronic equipment in the property.

Testing and certification

Circuits, earthing and main protective bonding are checked; the completed work is inspected, tested, labelled and electrically certified.

Genuine completed work

See the installation.
Explore the detail.

These are real SL4 projects showing the finished work and the electrical issues addressed. Where matching customer feedback is available, it is clearly identified on the project page.

Perton · Consumer unit & socket upgradesConsumer-unit upgrade within a wider domestic jobSee the before and completed consumer-unit work alongside garage sockets and home-office electrical alterations.View full project →Halesowen · Consumer Unit UpgradeBurning smell led to serious findingsSee genuine evidence of localised overheating and a loose conductor discovered during a detailed electrical inspection.View full project →Fordhouses · Consumer unit & EICRCanal-side electrical upgradeA genuine project combining a consumer-unit change, fault repairs, inspection and testing.View full project →Cradley Heath · Distribution boardDedicated workshop supplyA new submain and FuseBox distribution board with surge protection for SMB Raceway's RC workshop.View full project →

Honest advice first

Does my fuseboard
need replacing?

Not necessarily. An older fuseboard does not automatically need replacing. SL4 inspects the existing equipment and the installation it serves, then recommends the appropriate solution rather than treating age alone as a reason to sell an upgrade.

Reasons to arrange an assessment

✓Rewireable fuse equipment or older protective devices
✓No appropriate RCD protection for circuits that require it
✓Signs of overheating, thermal damage or deterioration
✓Insufficient capacity for a proposed additional circuit
✓Planned alterations such as an EV charger installation
✓Known electrical faults or previous test findings
✓Missing or inadequate main protective bonding

Individual protection

RCBOs

Each circuit has its own 30 mA residual-current protection where required, together with overcurrent protection. A fault is therefore less likely to disconnect unrelated circuits.

Equipment protection

Type 2 SPD

Surge protection helps reduce the voltage passed on to connected equipment during short transient spikes, helping protect modern electronics.

The whole installation

Checks beyond the box

Main protective bonding, earthing, circuit condition, supply capacity, identification and test results all form part of the professional assessment.

Genuine SL4 findings

More than just
changing the fuseboard.

A consumer-unit replacement involves assessing and testing the existing electrical installation—not simply swapping one enclosure for another. These genuine SL4 examples show why the wider checks matter.

Halesowen · Consumer Unit Upgrade

Thermal Damage Found During Fuseboard Replacement

During a genuine SL4 Electrical Services consumer unit upgrade in Halesowen, evidence of overheating and thermal damage was discovered within the existing fuseboard. Loose or high-resistance connections can produce significant heat at one point without necessarily creating enough overcurrent to operate the circuit protective device.

The affected equipment was removed and the installation upgraded with a modern FuseBox consumer unit incorporating individual RCBO protection, 30 mA additional protection where required, surge protection, clear circuit identification, inspection, testing and certification.

The important issue in this case was the condition of the connection and the localised heat it created, rather than the age of the fuseboard alone.

Halesowen electrical services →

Thermal damage discovered inside older fuseboard during consumer unit upgrade in Halesowen — Thermal damage found

Close view of localised overheating and damaged insulation — Close inspection

Modern FuseBox RCBO consumer unit installed by SL4 Electrical Services — Genuine SL4 FuseBox installation

Wednesbury · Consumer Unit Upgrade

Missing Main Protective Bonding Identified

During a genuine SL4 Electrical Services consumer unit upgrade in Wednesbury, the existing installation was assessed and missing main protective bonding to the incoming water service was identified. The required bonding was installed as part of the agreed work before the installation was tested and certified.

The installation was upgraded using a modern FuseBox consumer unit with individual RCBO protection, a Type 2 Surge Protection Device, 100 A main switch, clear circuit identification, inspection, testing and certification.

Main protective bonding helps keep accessible metal services at a similar electrical potential during a fault. Its presence, size, condition and connection point need to be checked on site.

Missing main water bonding identified during consumer unit upgrade in Wednesbury — Bonding assessment

Main protective bonding installed during consumer unit upgrade in Wednesbury — Bonding connection

FuseBox consumer unit upgrade completed by SL4 Electrical Services in Wednesbury — Modern FuseBox protection

Related work

Protection that fits
the installation.

EICRs & testingAssess circuit condition and record findings before deciding the right next step.EV charger installationCheck capacity, earthing and suitable protection before adding a charger circuit.New circuits & outbuildingsDedicated supplies, secondary consumer units and new circuits for garages and workshops.BS 7671 Amendment 4:2026See what the current Wiring Regulations update means for homeowners and electrical work.

Initial advice from Shaun

Not sure if your fuseboard
needs upgrading?

Send SL4 Electrical Services a clear photo of your existing fuseboard on WhatsApp. Shaun can take an initial look and advise on the next step. A photograph cannot always provide a definitive assessment, so inspection and testing may still be required.

For safety, open only the normal hinged flap. Never remove a screwed cover or touch anything inside.

Send a fuseboard photo →Or call 07923 495034 →

Simple process

What happens next

1Send a safe, clear photo of your current fuseboard and the area around it.
2Shaun reviews the likely scope and explains whether an assessment visit is needed.
3The existing circuits, earthing, bonding, capacity and supply arrangements are checked.
4Any agreed upgrade is installed, labelled, inspected, tested and certified.

Helpful answers

Common questions
answered clearly.

Practical information before you arrange a quotation or site visit.

Does an old fuseboard automatically need replacing?

No. Age, colour or the presence of older equipment does not automatically mean a fuseboard is unsafe or must be replaced. Its condition, the protection provided, the installation it serves and any proposed new work should be assessed before advice is given.

What is an RCBO consumer unit?

An RCBO provides residual-current and overcurrent protection to an individual circuit. With separate RCBOs, a fault on one circuit is less likely to switch off healthy, unrelated circuits elsewhere in the property.

What does surge protection do?

A Type 2 Surge Protection Device helps limit short voltage spikes entering the installation. It reduces the risk of damage to sensitive electronic equipment, although it is not a guarantee against every possible surge or lightning event.

Can I send a fuseboard photo on WhatsApp?

Yes. A clear photo of the whole fuseboard with only its normal hinged lid or flap open, plus a wider photo of the surrounding area, can help with initial advice. Do not remove a screwed cover or touch anything inside. A photograph cannot always replace inspection and testing.

Does the existing wiring get tested?

Yes. A professional consumer-unit replacement is more than changing the enclosure. The existing installation is assessed, appropriate pre-work checks are completed and every connected circuit is verified after the changeover.

Will main protective bonding be checked?

Yes. Earthing and main protective bonding to services such as gas and water are checked as part of assessing the installation. Any required work is explained and included in the agreed scope.

Will I receive a certificate?

Yes. The completed work is inspected and tested, an Electrical Installation Certificate is provided, and any applicable Building Regulations notification is explained.

Could an EV charger require consumer-unit alterations?

Possibly. An EV charger needs a suitably designed and protected circuit. The existing consumer unit, supply capacity, earthing and available ways are assessed first; sometimes a dedicated or additional consumer unit is the appropriate solution.

Let’s talk

Need a straightforward quote?

Answer a few quick questions, see which photos will help and open a completed message in WhatsApp.

Start guided enquiry →Or call Shaun →