ELECTRAGUARD.UK

One of the most common questions homeowners ask is: what size cable does a cooker need?
Whether you’re installing a new electric cooker, upgrading your kitchen, or replacing an old appliance, choosing the correct cooker cable size is essential for safety, performance, and compliance with UK wiring regulations.

In this guide, we’ll explain how cooker cable sizes work, what affects the cable choice, and why it’s always best to have a qualified electrician carry out the installation.

Why Cooker Cable Size Matters
Electric cookers draw a high electrical load. If the cable is too small, it can overheat, trip the circuit, or even become a fire risk.
If it’s too large, it may be unnecessary and more expensive than needed.
The correct cable size ensures:
-Safe operation
-Compliance with BS 7671 (IET Wiring Regulations)
-Reliable performance without nuisance tripping

Common Cooker Cable Sizes in the UK
In most UK homes, cooker cables are one of the following sizes:
🔹 6mm² Cooker Cable
-Suitable for smaller electric cookers
-Typically up to around 32 amps
-Often used where the cooker load is lower or diversity applies
🔹 10mm² Cooker Cable
-Common for larger electric cookers and range cookers
-Suitable for higher current loads
-Often used in modern kitchens or where longer cable runs are involved
👉 Most standard electric cookers are wired in 6mm² or 10mm² twin and earth cable, depending on the total electrical load and installation conditions.

What Determines the Correct Cooker Cable Size?
There isn’t a one-size-fits-all answer. An electrician will consider several factors:
1. Cooker Power Rating (kW)
The cooker’s rating plate will show its total power in kilowatts (kW).
Higher-rated cookers require thicker cables.
2. Circuit Length
Longer cable runs increase voltage drop, which may require a larger cable size.
3. Installation Method
Cables run through insulation, walls, or trunking can carry less current than clipped cables.
4. Diversity
UK wiring regulations allow for diversity, meaning not all parts of a cooker are used at full power at the same time. This often allows a smaller cable than the total load suggests.

Do All Electric Cookers Need a Dedicated Circuit?
Yes.
Electric cookers must be supplied by a dedicated cooker circuit, usually protected by a 32A or 40A circuit breaker, and controlled by a local cooker isolation switch.
Plugging a cooker into a standard socket is not safe or compliant unless it is specifically designed as a plug-in appliance.

What Size Cooker Cable Do I Need for My Home?
As a general guide:
-Small to medium electric cookers: 6mm²
-Large or high-powered cookers: 10mm²
However, the only safe way to be sure is to have a professional assessment.

Need a Cooker Installed or Upgraded?
If you’re unsure what size cooker cable you need, or you’re planning a new kitchen installation, we can help.
📞 Contact us today for:
-Cooker and hob installations
-New cooker circuits
-Upgrades to existing wiring
-Electrical safety inspections
We ensure all work is carried out safely, efficiently, and fully compliant with UK regulations.

Our customers choose us because we’re:
-Trusted and recommended
-Local and responsive
-Qualified and insured

Call today for a free, no-obligation estimate and see why so many homeowners and businesses rate us as their go-to electrician.

22/12/2025

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