Fuse box replacement in Cardiff
Replace your old Cardiff fuse box with a modern 18th Edition consumer unit. Fixed price, single-day fit, Part P notified.
If you are weighing up at a Cardiff address, the useful detail is below rather than in a brochure. Rewireable BS 3036 fuse boxes — the ones with little ceramic cartridges and rewireable fuse wire — were the standard for decades and still sit in plenty of Cardiff homes. The most useful thing you can tell us on the first call is what changed immediately before you noticed the problem. It is one reason we quote after the survey rather than over the phone. Single-day swap with a 4–6 hour power-off window is the pivot point. Everything quoted after it follows from what the readings say, which is why the survey comes first at any CF10–CF24 address. That is checked with instruments, not by eye. Cardiff property owners generally want to know two things about fuse box / cu: is it necessary, and what will it involve.
- Power off typically 4–6 hours Nothing here is optional.
- Frequently — old rewireable / BS 3036 boards swapped
- Properties near Penarth throw this up regularly: old rewireable / BS 3036 boards swapped.
- Frequently reported from CF10–CF24: 18th Edition Amendment 2 RCBO-per-circuit option.
- Where SPD surge protection optional shows up, we test the neighbouring circuits too.
What's different about Cardiff
Many older Cardiff properties still run on rewireable BS 3036 fuse boxes that no longer meet 18th Edition requirements, so the new board often needs an earth rod or a TT earthing arrangement if the supply isn't PME. Nothing here is optional.
Frequently — 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.
Part P notified to Building Control — common enough locally that we carry the parts for it.
The pattern we see near the A470 and A48 is power off typically 4–6 hours.
How we'd do it
- 1SurveyCheck board, tails, earthing and supply size, with any surprises raised before they are actioned.
- 2InstallFrequently — single-day swap with a 4–6 hour power-off window.
- 3CertifySingle-day swap with a 4–6 hour power-off window forms part of the fixed price, along with the certificate.
- 4QuoteFixed price including any earthing or tail upgrades. It affects sequence more than cost.
Common questions
Do I need RCBO per circuit?
It's the modern best-practice option — single-circuit faults don't trip the whole board.
Why does testing take so long?
Because each circuit is measured individually. Part P notified to Building Control would be missed by a walk-round inspection.
Do you charge to come out and look?
Attendance and testing are quoted before we travel to Cardiff, so there is nothing added afterwards that was not agreed.
How soon can this be booked?
Availability varies week to week. Cardiff is on our regular round, so it is usually a matter of days rather than weeks.
Do you cover Cardiff for fuse box / cu?
Yes — Cardiff and the surrounding CF10–CF24 postcodes are part of our regular working area, including Penarth and Caerphilly, and Cardiff Council notification is handled by us where the work requires it. It affects timing more than cost.
How far in advance should I book?
For non-urgent work, a week or so gives the most choice of slots across CF10–CF24.
Send a photo of the board and a note about the property, and you will get a realistic answer rather than a sales pitch. We cover Cardiff and the CF10–CF24 postcodes, including Caerphilly, for fuse box / cu. We would rather answer a question than sell you a visit you do not need. Ask first. We cover Cardiff and the CF10–CF24 postcodes, including Pontypridd, for fuse box / cu.