7 Signs Your Fuse Board Needs Replacing in Glasgow
Your consumer unit (fuse board) is the heart of your home's electrical system. When it starts failing, it can put your whole home at risk. Here are the seven most common warning signs that your fuse board in Glasgow needs replacing — and what to do about each one.
1. Your Fuse Board Still Uses Old-Style Rewirable Fuses
If your board has individual fuse holders with wire inside rather than modern circuit breakers, it is almost certainly decades old. Older rewirable fuse boards do not offer the same level of protection as modern consumer units with RCDs (Residual Current Devices) and MCBs (Miniature Circuit Breakers). RCDs can detect a fault and cut the power in as little as 40 milliseconds — old rewirable fuses cannot do this.
What to do: Book a consumer unit replacement with a certified Glasgow electrician.
2. Circuit Breakers Trip Repeatedly
The occasional tripped breaker is normal, but if one or more circuits trip regularly — even with normal loads — it signals that the circuit is overloaded, there is a fault somewhere on the circuit, or the breaker itself is faulty and no longer rated correctly for the load it protects.
Repeated tripping is not just an inconvenience — it can indicate a developing wiring fault that, if left unaddressed, could cause overheating or a fire.
What to do: Call our Glasgow domestic electricians to investigate the cause before it becomes a bigger problem.
3. You Notice a Burning Smell Near the Consumer Unit
A burning smell — even a faint one — coming from your fuse board is a serious warning sign. It can indicate that wires are overheating, insulation is melting or a connection is arcing inside the board. This is a potential fire hazard and should be treated as an emergency.
What to do: If you smell burning from your consumer unit, turn off the main switch immediately (if it is safe to do so) and call our 24/7 emergency electrician service on 07719 557314.
4. Lights Flicker or Dim When You Switch on Appliances
If your lights dim noticeably when you turn on the kettle, washing machine or other high-demand appliances, it suggests the circuits are struggling with the load. This is often caused by an undersized consumer unit or inadequate circuit protection for the demands of a modern home.
What to do: An upgraded consumer unit with correctly rated circuits can resolve this. Ask us for a free assessment.
5. Your Board Has No RCD Protection
RCDs (Residual Current Devices) protect against electric shock by detecting earth leakage faults. Current regulations require RCD protection for all new and replacement consumer units in the UK. If your board has no RCDs — or only partial RCD protection — it does not meet modern safety standards and leaves you and your family at greater risk.
You can test whether your board has RCDs by looking for a button labelled "T" or "Test" on the board. If there are no test buttons, there are no RCDs.
What to do: A new dual-RCD or RCBO consumer unit provides protection on all circuits.
6. Your Board Is Visibly Scorched, Discoloured or Damaged
Scorch marks around the board, discolouration on circuit breakers or melted plastic are signs of overheating that has already occurred. Even if everything appears to be working, the damage to the internal components of the board could cause a future failure or fire.
What to do: This is a safety emergency. Do not ignore visible damage to electrical equipment — call us on 07719 557314.
7. Your EICR Flags the Consumer Unit as C1 or C2
An EICR (Electrical Installation Condition Report) may identify your consumer unit as a C1 (immediate danger) or C2 (potentially dangerous) defect. Common reasons include: lack of RCD protection, undersized or incorrectly rated circuit breakers, overheating evidence or a board that is no longer safe to use.
If your EICR includes a C1 or C2 code relating to the consumer unit, you are legally required to have the remedial work carried out — and landlords have a strict deadline to comply.
What to do: Book a consumer unit replacement and we will issue the required Electrical Installation Certificate on completion.
How Much Does a Consumer Unit Replacement Cost in Glasgow?
Consumer unit replacement in Glasgow typically costs between £400 and £900 including labour and materials, depending on the number of circuits and the type of unit installed. Most standard 3-bedroom homes fall between £450 and £700. We provide clear, fixed quotes before any work begins.
Frequently Asked Questions — Fuse Board Replacement Glasgow
How much does it cost to replace a fuse board in Glasgow?
Consumer unit replacement in Glasgow typically costs between £400 and £900 including labour and materials, depending on the size of the board and the number of circuits. Most domestic properties fall between £450 and £700.
How long does it take to replace a fuse board?
Replacing a consumer unit typically takes 4–8 hours for a standard domestic property. The power will be off for most of this time, so it is best scheduled for a day when you can plan accordingly.
Do I need building regulations approval to replace a fuse board in Scotland?
Yes. Consumer unit replacement is notifiable electrical work in Scotland. Your electrician must be registered with a competent person scheme (such as SELECT or NICEIC) to self-certify the work.
Can I replace a fuse board myself in Scotland?
No. Consumer unit replacement is notifiable work under Scottish Building Regulations and must be carried out by a registered electrician. Doing it yourself is unsafe, illegal and may invalidate your home insurance.
Book a Consumer Unit Replacement in Glasgow
Our certified Glasgow electricians can assess your existing board and carry out a full replacement with a new, regulation-compliant consumer unit — complete with the required certification.