Fuse box replacement in Mountain Ash
Replace your old Mountain Ash fuse box with a modern 18th Edition consumer unit. Fixed price, single-day fit, Part P notified.
Fuse box / cu is easy to get quoted badly and hard to get quoted honestly without looking at the installation first. The most useful thing you can tell us on the first call is what changed immediately before you noticed the problem. On a Mountain Ash job that usually shows up as BS 7671 cert issued, Part. Rhondda Cynon Taf County Borough Council is the authority for Mountain Ash, so where the work is notifiable the registration goes through them. That is the difference between a guess and a measurement. This page covers fuse box / cu for property in Mountain Ash and the CF45 postcodes around it.
- Old rewireable / BS 3036 boards swapped This is the part people ask about most.
- Very often — 18th Edition Amendment 2 RCBO-per-circuit option
- Left alone, old rewireable / BS 3036 boards swapped rarely improves on its own.
- 18th Edition Amendment 2 RCBO-per-circuit option, particularly where the installation has been extended piecemeal.
- SPD surge protection optional — cheap to confirm, expensive to guess at.
What's different about Mountain Ash
Where the meter tails are too short to reach a new board position, we coordinate with the DNO for a meter relocation — we book this for you, no extra cost. This is the part people ask about most.
Very often — on older Mountain Ash terraces, the existing meter tails are often undersized (16mm² where modern requires 25mm²). We replace them at the same time so the upgrade is genuinely compliant.
The Rhondda Cynon Taf County Borough Council housing stock throws up part P notified to Building Control regularly.
Not glamorous, but common: power off typically 4–6 hours.
How we'd do it
- 1SurveyCheck board, tails, earthing and supply size is the step most quotes leave out; ours states it.
- 2QuoteVery often — fixed price including any earthing or tail upgrades.
- 3InstallIncluded for every Mountain Ash job of this type: single-day swap with a 4–6 hour power-off window.
- 4CertifyIn this property type: BS 7671 cert issued, Part P notified to Building Control.
Common questions
Is older wiring automatically a problem?
No. Plenty of older Mountain Ash installations test well. Age is a reason to check, not a verdict.
What is not included?
Building work, decoration and anything outside the electrical scope. Those are flagged rather than absorbed.
Do you charge to come out and look?
Attendance and testing are quoted before we travel to Mountain Ash, so there is nothing added afterwards that was not agreed.
Will you show me what you found?
Always. The dense Penrhiwceiber terraces have shared party walls is easier to understand when you can see it, so we photograph anything hidden.
Do you cover Mountain Ash for fuse box / cu?
Yes — Mountain Ash and the surrounding CF45 postcodes are part of our regular working area, including Aberdare and Pontypridd, and Rhondda Cynon Taf County Borough Council notification is handled by us where the work requires it. It goes on the schedule either way.
What if you find something unrelated?
It gets reported, not quietly fixed. You decide whether it is dealt with now or later.
Tell us what document you have been asked for and by whom, and we will confirm exactly which one applies. We cover Mountain Ash and the CF45 postcodes, including Pontypridd, for fuse box / cu. Booking is by phone or form; either way you speak to the person who would carry out the work. We cover Mountain Ash and the CF45 postcodes, including Merthyr Tydfil, for fuse box / cu.