Consumer unit replacement in Coulsdon
Fuse board replacement in Coulsdon with outside circuits, charger demand, supply isolation and the condition of retained wiring checked before specification.
Calls answered 24/7
- 14 years trading
- Local to Banstead
- Clear, upfront quotes
Consumer unit replacement pricing in Coulsdon
Pricing for a consumer unit change reflects the size of the installation and the number of circuits being transferred. Quotations are provided clearly in writing before work begins.
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 covers the metal consumer unit, modern protective devices, installation labour and full testing.
- The total cost varies depending on the number of circuits connected and whether earthing bonding requires upgrading.
- Any pre-existing circuit faults that require separate remedial repairs are quoted before repair work proceeds.
Consumer unit replacement across Coulsdon
We serve Coulsdon from our base in Banstead.
What happens on the day
A consumer unit installation takes between half a day and a full day. Power is switched off while the exchange takes place, and each step is carried out methodically.
- Pre-installation circuit testingBefore taking down the existing board, we carry out electrical checks across all connected circuits. This identifies any pre-existing wiring issues or shared neutrals so they do not interrupt new residual current devices.
- Fitting the metal consumer unitThe old unit is safely disconnected and removed from the wall. We mount a modern fire-resistant metal consumer unit, arrange the incoming cables neatly, and fit modern circuit breakers and surge protection devices.
- Reconnecting and circuit identificationEach circuit connects into its allocated protective breaker. We complete a clear circuit directory directly on the unit so each switch indicates the exact area or appliance it isolates.
- Final testing and handoverOnce the board is powered up, live electrical tests confirm trip times and earth path integrity. We walk you through the unit, explain how the test buttons operate, and complete the safety paperwork.
How booking works
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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 does a fuse board replacement take?
Replacing a consumer unit typically takes between half a day and a full day. The main electrical supply is switched off during this time so circuits can be tested and transferred safely into the new metal enclosure.
Will my current wiring work with a new consumer unit?
In most situations, existing cabling works smoothly with a new board. We test each individual circuit before connecting it to the new unit. If testing reveals an existing wiring fault, we explain the findings and price any remedial repair separately.
Why do old fuse boards need replacing?
Older boards with wire fuses or wooden backings lack sensitive residual current protection. A modern consumer unit contains residual current devices and surge protection that trip within milliseconds to prevent fire and electric shock.
What certificates do I receive after installation?
Following the installation and live testing, you receive an Electrical Installation Certificate confirming the work complies with current national electrical safety standards.
Will my electricity be turned off during the work?
Yes, the electrical supply must be isolated while the old board is removed and the new consumer unit is connected. We keep you informed before turning the power off and restore it as soon as testing is complete.
