When it comes to electrical safety, few components are more important than the consumer unit. Often called the “fuse box” in the past, today’s consumer units are far more advanced, combining safety, convenience, and compliance with the latest regulations.
If you are renovating, upgrading, or building a new property, choosing the right consumer unit is one of the most important decisions you’ll make. At Sparks, we recommend reliable, compliant solutions from Hager and BG Electrical — two of the most trusted brands in the industry.
In this guide, we’ll explore what a consumer unit is, the types available, and how to decide which model best suits your home.
What is a Consumer Unit?
A consumer unit is the central distribution board in your home, housing protective devices that manage and safeguard all electrical circuits. Its job is to:
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Distribute electricity efficiently.
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Protect against overloads, short circuits, and earth faults.
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Allow safe isolation of circuits when required.
Modern consumer units are built to the standards set out in the 18th Edition Wiring Regulations (BS 7671), featuring non-combustible enclosures and advanced protective devices like RCDs and RCBOs.
Older fuse boxes with rewirable fuses are no longer compliant and should be replaced with a modern unit from a trusted brand such as Hager or BG Electrical.
Buy BG Electrical Consumer Units
Types of Consumer Units
There are several main types of consumer units to choose from, depending on your property size and electrical needs:
1. Main Switch Consumer Units
Basic units that provide a main isolator and individual circuit protection. Suitable for small homes or outbuildings.
2. Dual RCD Consumer Units
One of the most common choices. Circuits are split across two RCDs, so if one group trips, the other remains unaffected.
3. High Integrity Consumer Units
These combine RCD-protected circuits with RCBOs for greater flexibility, allowing sensitive or high-load circuits (like kitchens or EV chargers) to be protected individually.
4. Fully Loaded Consumer Units
Pre-assembled with breakers, RCDs, and other devices, saving time and making installation easier.
At Sparks, we supply a wide selection of Hager and BG Electrical consumer units in all of these categories, ensuring compliance and peace of mind.
Factors to Consider When Choosing a Consumer Unit
a. Number of Circuits
Think about the size of your property. Flats may only require 6 circuits, while larger homes can need 10–14 or more. Always choose a unit with some spare capacity for future expansion.
b. Type of Protection
Modern units can incorporate a range of devices:
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RCDs (Residual Current Devices) – protect groups of circuits.
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RCBOs – protect circuits individually, offering a higher level of safety and convenience.
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SPDs (Surge Protection Devices) – defend your home’s appliances against voltage spikes.
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AFDDs (Arc Fault Detection Devices) – provide extra fire safety in line with the latest standards.
c. Enclosure Material
All consumer units must have a non-combustible (metal) enclosure. Both Hager and BG Electrical manufacture robust, regulation-compliant steel units.
d. Brand Choice
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Hager is renowned for reliability, excellent build quality, and user-friendly design. Their units offer generous wiring space, neat layouts, and long-lasting performance.
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BG Electrical combines affordability with compliance, making it an excellent option for homeowners who want dependable protection at a competitive price.
Consumer Unit Placement & Compliance
Consumer units must be installed by a qualified electrician and positioned where they are safe and accessible. They should not be fitted in bathrooms, damp spaces, or locations where they cannot be reached easily.
The recommended installation height is between 1350mm and 1450mm above floor level, ensuring the switches can be reached without difficulty.
Every installation must comply with the 18th Edition Wiring Regulations (BS 7671). Your electrician will test and certify the system once the consumer unit is installed.
When Should You Upgrade?
It may be time to replace your consumer unit if:
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You still have an old fuse box.
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Your home has no RCD protection.
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Circuits are overloaded or tripping frequently.
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You are adding high-demand appliances (such as EV chargers or electric showers).
Upgrading to a modern Hager or BG Electrical consumer unit will bring your property up to standard, reduce risks, and provide a safer environment for your family.
Recommended Hager and BG Consumer Units
At Sparks, we focus on supplying quality products that installers trust. Some popular options include:
Hager 10-Way Dual RCD Consumer Unit
The Hager 10-Way Dual RCD consumer unit is a trusted choice for medium-sized homes, offering excellent circuit separation and reliable protection. Its dual RCD design helps minimise disruption if one circuit trips, while the solid steel enclosure ensures compliance with 18th Edition wiring regulations. Easy to install and built to last, this unit is a favourite among professional electricians.
Hager High Integrity 14-Way Consumer Unit
Designed for larger homes and demanding electrical setups, the Hager 14-Way High Integrity unit provides ultimate flexibility. It combines both RCD-protected circuits and RCBO-ready ways, allowing you to isolate sensitive or high-load appliances individually. With spacious internal wiring and robust construction, this model offers premium quality and future-proof performance, making it an excellent long-term investment for your property.
BG Electrical 10-Way Dual RCD Consumer Unit
Compact yet reliable, the BG Electrical 10-Way Dual RCD consumer unit is ideal for small to medium-sized properties. It ensures essential protection across multiple circuits while remaining cost-effective. Its modern steel design meets all current regulations, and the straightforward layout makes it quick to install. A smart, affordable option for homeowners who want dependable performance without compromising on safety.
BG Electrical 16-Way Consumer Unit with Surge Protection
The BG Electrical 16-Way Consumer Unit offers more than just standard circuit protection — it also includes integrated surge protection to safeguard sensitive electronics from power spikes. Perfect for modern homes with a growing number of appliances and devices, this unit provides robust compliance with the latest wiring regulations. Affordable, practical, and reliable, it’s a top choice for everyday safety and convenience.
Conclusion
Choosing the right consumer unit is essential for safety, compliance, and peace of mind. By considering the number of circuits, type of protection, and quality of brand, you can ensure your installation is both future-proof and reliable.
At Sparks, we recommend Hager for premium quality and BG Electrical for dependable, cost-effective solutions. Both brands deliver excellent performance, ensuring your home remains safe and compliant for years to come.
Always consult a qualified electrician before purchasing or installing a consumer unit. When you’re ready, explore our full range of Hager Consumer Units and BG Electrical Consumer Units at Sparks.
