Upgrading your consumer unit is one of the most important steps you can take to protect your home from electrical hazards. The right fuse box improves safety, meets UK regulations, and ensures your electrical system can handle modern demands. This guide explains exactly how to choose the right upgrade and why professional installation is essential.
Why Your Consumer Unit Upgrade Matters
A consumer unit is the heart of your home’s electrical system. If it is outdated or overloaded, you are at higher risk of:
- Electrical fires
- Tripping circuits
- Damaged appliances
- Power outages
- Failure to meet electrical safety standards
Many homes across Berkshire, Buckinghamshire and Oxfordshire still have fuse boxes that do not meet the latest wiring regulations. If your home still uses an old style fuse board with rewireable fuses, you need an upgrade.
If you are unsure, you can always book an Electrical Health Check through First Call Electrical Services to assess the condition of your system.
Signs You Need a Consumer Unit Upgrade
Before choosing a new unit, you should confirm whether an upgrade is necessary. Common signs include:
- Your fuse box has a wooden back, older fuses or no RCD protection
- Frequently tripping circuits
- Flickering lights or overheated sockets
- You are planning renovations, rewiring or an extension
- You are installing high load appliances such as EV chargers or electric showers
- Your home has not had an EICR in more than 5 years
Landlords are legally required to maintain safe electrical installations. If you are renting out property, a modern consumer unit makes compliance easier.
Understanding the Components of a Modern Consumer Unit
Before selecting a replacement, it helps to know what a modern unit should include.
1. Main Switch
Allows you to isolate power to the entire property.
2. RCDs
Residual Current Devices protect against electric shock by cutting off power quickly when a fault is detected.
3. RCBOs
Residual Current Breaker with Overcurrent protection combines RCD and MCB protection in one device. These offer superior protection and reduce the chance of multiple circuits tripping.
4. MCBs
Miniature Circuit Breakers protect against overloading and short circuits.
5. Surge Protection Devices
Protect your appliances from voltage spikes, especially during storms or power surges.
A quality consumer unit includes these features and is compliant with the latest wiring regulations. First Call Electrical Services installs fully compliant units across all serviced areas.
Types of Consumer Unit Upgrades to Consider
The right upgrade depends on your home size, electrical load, and safety requirements. Here are the most common options.
Standard Dual RCD Consumer Unit
A popular choice for many homes. It has two RCDs that protect multiple circuits.
Best for:
- Small to medium homes
- Standard usage needs
- Budget friendly upgrades
Limitations:
If one circuit connected to the RCD fails, everything on that RCD loses power.
High Integrity Consumer Unit
Includes a combination of RCDs and RCBOs which provide more flexibility and reduce nuisance tripping.
Best for:
- Larger homes
- Properties with high load appliances
- Households wanting better separation of circuits
Full RCBO Consumer Unit
Every circuit has its own RCBO. This offers the highest level of protection and fault isolation.
Best for:
- Homes with EV chargers or electric heating
- Families working from home where uptime is important
- Properties where maximum safety is required
Consumer Unit with Surge Protection
Surge protection is now recommended for all homes. It helps avoid damage to TVs, appliances and electronics.
Best for:
- Any modern home
- Areas prone to storms or power spikes
- Homes with expensive appliances
How to Choose the Right Size and Capacity
Choosing the right size consumer unit is essential for long term safety.
Number of Circuits
Your electrician will evaluate how many circuits you currently use and whether future circuits will be needed.
Future Proofing
If you plan to add:
- an extension
- an EV charger
- an electric shower
- outdoor lighting
- a home office
You will need a larger unit with additional slots.
Load Capacity
Modern electrical requirements continue to increase. Your electrician must ensure the system can handle current and future load safely.
Why Professional Installation is Crucial
Upgrading a fuse box is not a DIY task. It is illegal for an unqualified person to replace a consumer unit. Your upgrade must be:
- Installed by a qualified and approved electrician
- Notified to Building Control
- Compliant with BS 7671 Wiring Regulations
- Tested and certified with an Electrical Installation Certificate
First Call Electrical Services provides fully certified installations by approved professionals. After installation, you receive proper documentation that may be required for insurance and property sales.
What to Expect During a Consumer Unit Upgrade
A typical upgrade includes:
- Full inspection of the current installation
- Testing of circuits before replacement
- Installation of the new consumer unit
- Testing all circuits after installation
- Issuing the required certificates
- Updating your home for compliance
The upgrade usually takes half a day to a full day, depending on the property.
How Much Does a Consumer Unit Upgrade Cost?
Costs vary depending on:
- The type of unit
- Number of circuits
- Whether additional rewiring or repairs are needed
- Surge protection or RCBO upgrades
You can request a quote directly through the enquiry form on the First Call Electrical Services website.
Why Choose First Call Electrical Services for Your Upgrade
Customers trust First Call Electrical Services because they offer:
- Qualified and DBS checked professionals
- Fully compliant installations
- Clear pricing and reliable service
- Fast response times
- Coverage across Berkshire, Buckinghamshire, Oxfordshire and surrounding areas
You can also explore their Electrical Health Check service to assess whether your system needs an upgrade.
Book Your Consumer Unit Upgrade Today
A modern consumer unit is one of the most important safety upgrades you can make for your home. If your fuse box is outdated or you are unsure whether it meets current standards, our team can help.
Book your consumer unit upgrade with First Call Electrical Services today. You can also contact the team directly through the enquiry form or by phone for fast and friendly support.