Consumer unit replacement in Wallington
Need a fuse board or consumer unit replaced in Wallington? TMB Electrics checks the incoming supply, earthing, bonding and circuit condition before installing the new board. Trevor works across SM6, testing what sits behind the enclosure so a modern consumer unit is not fitted over unresolved faults in older wiring.
Calls answered 24/7
- 14 years trading
- Local to Banstead
- Clear, upfront quotes
Consumer unit replacement pricing
TMB Electrics provides clear written pricing for every consumer unit upgrade, outlining exactly what is included in the installation.
From £375
Included when agreed
- A new metal consumer unit with RCD protection and surge protection
- Every existing circuit reconnected and labelled
- Testing of every circuit before the power goes back on
- An Electrical Installation Certificate, notified under Part P
Ways to pay


- Pay by bank
- Bank transfer
- The price includes the non-combustible metal consumer unit, modern protective devices, full circuit testing, identification markings and the Electrical Installation Certificate.
- Quotations depend on the number of usable circuits connected to the board and the specific protective devices required.
- Repairs to faults discovered on pre-existing circuit wiring or necessary upgrades to main protective bonding are quoted separately before work begins.
Consumer unit replacement across Wallington
We serve Wallington from our base in Banstead.
What happens on the day
A typical consumer unit upgrade takes between half a day and a full day to complete. Power is switched off safely while existing wiring is inspected, transferred and tested.
- Pre-installation testing of existing circuitsBefore disconnecting the old fuse board, testing is carried out on every existing circuit. Identifying underlying insulation or earth faults early prevents new residual current breakers from tripping when the system is energised.
- Removing the old board and mounting the new enclosureThe previous fuse board is removed and a metal consumer unit is secured in place. Cables are neatly dressed, connected to individual circuit breakers with surge protection, and clearly indexed on the panel schedule.
- Commissioning and certification handoverLive testing verifies trip times and loop impedance across all circuits. Once testing confirms proper operation, the system is turned back on, the new configuration is explained, and an Electrical Installation Certificate is issued.
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Why choose TMB Electrics
- Reviews
- 39
- Rating
- 5.0
- Trading since
- 2012
“I keep things straightforward: you deal with me from the first quote to the final check, with clear advice and no surprises along the way.”
Trevor Bush, TMB Electrics
Book NowPhotos of our work
How long does a fuse board replacement take?
A typical consumer unit installation takes between half a day and one full day. Power will need to be switched off for the majority of the visit while existing circuits are tested, disconnected and rewired into the new metal enclosure.
Will my current wiring work with a new consumer unit?
Most existing household circuits work without issue once connected to a modern board. Every circuit is tested prior to reconnection. If an underlying cable defect or insulation issue is detected, an explanation and separate quote are provided before remedial work proceeds.
What causes older fuse boxes to fail safety checks?
Older boards frequently lack residual current devices and surge protection, or feature rewireable fuses inside combustible enclosures. These deficiencies represent significant safety hazards under current electrical standards, prompting recommendations for replacement.
Do I receive certification after the consumer unit is installed?
Yes. An Electrical Installation Certificate is issued once the installation and live testing are complete. This documentation confirms the work meets regulatory safety standards and serves as a record for home sales or tenancy compliance.
Can extra circuits be added during the replacement?
New circuits, such as supplies for cookers, outbuildings or electric car chargers, can be accommodated on the new board. These additions require planning and separate quotation, which is arranged before work begins.

