Fuse box replacement in Bristol
A modern consumer unit with RCD protection on every circuit, fitted and certified in a day.
Replacing a fuse box (consumer unit) in Bristol costs £450–£750 excluding VAT and takes most of a day. That covers a new metal consumer unit with RCD or RCBO protection on every circuit, surge protection as the current regulations expect, full testing of every circuit it feeds, and the Part P certification. An old rewireable fuse board still works, but it cannot protect people the way a modern board protects them; this is the single highest-safety-return job in domestic electrics.
This is for you if
- Your board still has rewireable fuses or a wooden backboard
- The electrics trip and you have no idea which circuit or why
- A survey or EICR flagged the consumer unit
- You are adding a big load: an EV charger, an electric shower, a kitchen extension
- There is no RCD protection, so a damaged cable means a shock, not a trip
- The board is a plastic one from the 2000s and you want current-standard protection
What's included
- A survey of every circuit the board feeds before we quote
- A modern metal consumer unit with RCBO protection per circuit
- Surge protection (SPD) fitted as standard, not sold as an extra
- Main bonding to gas and water checked and upgraded where needed
- Dead and live testing of every circuit, with the results recorded
- Part P notification and the Electrical Installation Certificate
The standard we work to
Consumer unit replacement is notifiable under Part P; installed and certified to BS 7671 including surge protection assessment; main bonding to gas and water verified before energising.
| Guide range | £450 – £750 |
| Typical duration | Most of a day |
| Compliance | Consumer unit replacement is notifiable under Part P |
Guide ranges for budgeting, excluding VAT. We confirm a fixed price in writing before any work starts; the price we agree is the price you pay.
Price your fuse boxes
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Fuse boxes: what people ask
How much does it cost to replace a fuse box?
£450 to £750 excluding VAT in Bristol for a straightforward like-for-like position swap, including RCBO protection, surge protection, testing of every circuit and the certificate. The top of the range covers boards with many circuits, awkward locations, or bonding that needs bringing up to standard at the same time. A price much below £400 usually means individual RCBOs have quietly become shared RCDs, which is the protection level of fifteen years ago.
Read the full answerHow long does a consumer unit replacement take?
Most of a day. The swap itself is the morning; the afternoon is testing every circuit the new board protects, because a new consumer unit certifies the whole installation it feeds. Power is off for much of the day, so we agree the date around your working arrangements, and fridges stay closed and cold.
Read the full answerDo I legally have to upgrade an old fuse box?
No. There is no law requiring an upgrade in your own home, and anyone telling you otherwise is selling. The honest position: an old board that passes inspection can stay. What changes the calculation is risk and events, an EICR coding it, an insurance renewal asking about it, adding a big new load, or simply that rewireable fuses protect wiring but do almost nothing to protect people. Landlords are different: an EICR that codes the board C2 makes remedial work legally required.
Read the full answerWhy does my fuse box keep tripping?
A trip is the system working: something downstream is leaking current or overloading. The usual suspects, in order: a failing appliance (kettles, washing machines and outdoor equipment lead the table), moisture in an outdoor socket or light, a damaged cable, or a genuinely overloaded circuit. Repeated tripping is a fault-finding job, not a reason to fit a bigger fuse. We trace it circuit by circuit and fix the cause, not the symptom.
Read the full answerFuse boxes across Bristol
The same prices everywhere; what changes is the housing. Each page covers what fuse boxes runs into locally: the wiring eras, the walls, the consent.
Planning fuse boxes?
Tell us the job and your postcode. We reply within one working day with an honest cost bracket, then a fixed written quote.