Short answer
Inspect your consumer unit for signs of overheating, buzzing, or missing RCD protection. Prioritise upgrades if your board shows these risks, as modern units offer enhanced safety features like RCBOs. Ensure compliance with wiring regulations and future-proof your electrical system, especially if your unit is ageing or failed an EICR inspection.
A hot or buzzing consumer unit is an emergency, not a quote-only visit.
Notifiable electrical work in a dwelling must be done by a registered electrician, or notified to building control.
On this page
How to recognise it
- Rewirable fuses indicate an outdated system that may not provide sufficient protection for modern electrical loads.
- A consumer unit with no RCD is vulnerable to electrical faults, posing higher risks of electric shock.
- Warm or hot surfaces on the consumer unit suggest overloading or faulty components that could lead to a fire hazard.
- A failed EICR inspection often reveals inadequacies in protection measures, such as missing earth fault protection.
- Buzzing noises emanating from the fuse box signify loose connections or internal faults needing urgent attention.
Common causes
- Ageing equipment can cause components to deteriorate over time, leading to increased failure risks.
- Undersized tails carry excessive current, causing overheating and potential damage to the consumer unit.
- Missing earth fault protection means faults won't be automatically cut off, raising the risk of electric shock.
- Outdated regulations compliance means the consumer unit lacks modern protective features like RCBOs and SPDs.
What you can do yourself
- 01Do not remove the board cover, as this can expose you to live electrical parts and significant risks.
- 02Keep the EICR accessible if available, for electricians to quickly assess previous inspection findings and recommendations.
- 03Check for obvious signs of wear or damage outside the unit, such as discolouration or physical cracks, to inform future repairs.
What the electrician does
- Replace the consumer unit to integrate updated safety features such as RCDs and RCBOs, improving overall protection.
- Upgrade to RCBO circuits for combined overcurrent and earth fault protection, especially in high-risk areas.
- Include SPD protection to guard electronic devices against voltage surges caused by external events, like lightning.
- Install metal-clad enclosures to enhance fire resistance and durability, ideal for concealing electrical components.
How the job usually runs
- 01Survey the electrical load to ensure the new consumer unit accommodates current and future demands.
- 02Isolate the electrical supply to safely allow the removal and installation of the new consumer unit.
- 03Install and securely fit the new unit to ensure stability and compliance with safety regulations.
- 04Conduct comprehensive testing to verify the unit's functionality and identify any installation defects.
- 05Provide certification to validate that the consumer unit complies with BS7671 standards and safety provisions.
What the price depends on
24 Hour Electrician Near Me does not publish a fixed price. That is agreed with the firm you appoint. Differences usually come from:
- The number of circuits or 'ways' in the board increases complexity and materials, affecting overall replacement costs.
- RCBO adoption means higher upfront costs but greatly improves circuit protection and reduces electrical faults.
- SPD inclusion adds additional protection against surges but also raises installation costs given the extra components.
- The extent of rewiring needed directly impacts labour time and material costs, varying significantly between properties.
How an enquiry works
- 01
Describe the job
Choose consumer unit replacement and say what is happening in Blaxton.
- 02
Local firms see it
Relevant electrician firms nearby can choose to unlock the enquiry.
- 03
You choose
Compare responses and decide who to appoint.
Questions
What should I do if my consumer unit is buzzing?
If your consumer unit is buzzing, it requires immediate professional attention as it could indicate loose connections or internal faults. Turn off the power if it's safe to do so and contact a registered electrician to assess and resolve the issue. Delaying repair can increase the risk of electrical fires or component failure. Never attempt to fix electrical faults yourself due to potential safety hazards.
How can I determine if my consumer unit needs an upgrade?
Determine the need for an upgrade by checking for rewirable fuses, absence of RCD protection, or signs of overheating. If you've experienced a failed EICR inspection, buzzing sounds, or flickering lights, a consumer unit upgrade is likely necessary. These symptoms indicate outdated or inadequate safety measures, making system upgrades crucial to meet current compliance and protection standards.
What types of electrical work are notifiable under UK regulations?
In the UK, notifiable electrical work includes new circuit installations, full consumer unit replacements, and certain work in special locations like bathrooms. These require notification to local building control unless undertaken by a Part P registered electrician. Notifying ensures compliance with building regulations, providing safety validations and official paperwork, which are essential when selling or renting properties.
What should a consumer unit replacement quote cover?
A consumer unit replacement quote should cover the cost of materials, including the consumer unit itself, RCBOs, and any additional protective devices like SPDs. It should also include labour for installation, testing, and certification. Look for Part P registration confirmation, guaranteeing compliance with wiring regulations. This documentation ensures safety and must comply with BS7671 standards, protecting your home and investments.
Consumer unit replacement in Blaxton?
One description, sent to relevant electricians near Blaxton. No obligation either way.

