Consumer unit replacement in Ewell
Fuse board replacement in Ewell with retained circuits tested, future loads identified and the route of any remedial work considered before installation.
Calls answered 24/7
- 14 years trading
- Local to Banstead
- Clear, upfront quotes
Understanding fuse board replacement pricing
Pricing for a consumer unit replacement reflects the required hardware, the number of existing circuits, and the detailed testing required to certify 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 quoted cost includes the metal consumer unit, protective devices, complete circuit reconnection, testing, and documentation.
- The total price varies depending on the number of circuits present and whether whole-house surge protection is installed.
- Any remedial work needed to repair pre-existing faults discovered on existing circuits is quoted separately before proceeding.
- Upgrades to main protective bonding or incoming earthing conductors, if found absent or undersized, are priced prior to commencement.
Consumer unit replacement across Ewell
We serve Ewell from our base in Banstead.
What happens on the day
A consumer unit installation is planned carefully to minimise disruption, ensuring your electrical circuits are fully checked before and after the replacement.
- Initial circuit testing before removalBefore disconnecting the existing distribution board, each circuit undergoes thorough instrument testing. This diagnostic check verifies insulation resistance and identifies any pre-existing faults that could trip new sensitive safety devices.
- Removal and installation of the metal unitThe mains electrical supply is safely isolated while the old board is dismantled. A sturdy, non-combustible metal consumer unit is mounted in its place, with incoming supply tails and circuit cabling neatly dressed into position.
- Circuit reconnection and clear labellingEvery lighting, socket, cooker, and immersion circuit is reconnected to its dedicated protective device. Circuit switches are clearly labelled inside the enclosure so individual circuits can be identified and isolated without confusion.
- Live system testing and client demonstrationOnce the board is energised, comprehensive live electrical testing confirms trip times and earth fault loop readings. The operation of the main switch, RCD test buttons, and surge devices is clearly demonstrated before packing away.
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Why choose TMB Electrics
- Reviews
- 38
- 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 will the electricity be turned off during the upgrade?
The main electrical supply must be isolated while the old enclosure is disconnected and the new metal board is installed. For a typical residential property, the power is turned off for several hours during the middle of the visit. Advance notice is always given so you can plan refrigeration and work needs.
Will my existing cabling work with a new consumer unit?
In most cases, the existing wiring functions perfectly well with a new board. We carry out insulation and continuity testing on every circuit before connecting it to the new unit. If a hidden wiring defect or damaged cable is discovered, we explain the issue clearly and provide a separate quote for the repair.
Why does an older fuse box need replacing if it still works?
Traditional wire fuses and early circuit breakers only protect against massive electrical overloads. They do not detect small earth leakage currents that can cause fatal electric shocks or sustained arcing fires. Modern units with sensitive RCDs provide that critical personal protection.
Do I receive a certificate after the consumer unit is installed?
Yes. A consumer unit replacement is notifiable electrical work. Following completion and live testing, you receive an Electrical Installation Certificate and building regulations compliance documentation confirming the work conforms to current national standards.
What is surge protection and do I need it in my new board?
Surge protection devices defend the delicate microelectronics in modern household equipment, boilers, TVs, and computers from sudden transient overvoltages. Incorporating surge protection into your new board protects valuable appliances throughout your property.
