Replacing your fuse box isn't just a technical upgrade — it’s a legal and safety requirement. As UK electrical regulations evolve, more homeowners are being told that their consumer unit is no longer compliant.
In this guide, we explain what makes a fuse box compliant in 2025, how to avoid common pitfalls, and why working with a qualified electrician is essential.
Electricity is one of the leading causes of domestic fires in the UK. In response, the government has introduced stricter safety regulations over the years to ensure modern fuse boards include:
Look for these visual signs:
Only a certified, Part P-registered electrician can legally upgrade or replace your fuse board.
At Lumiel, we’re:
✅ New metal consumer unit
✅ RCD/RCBO protection
✅ Properly labelled circuits
✅ Earth bonding check
✅ Final inspection and testing
✅ NICEIC certificate + building notification
🔎 We also check:
If you're:
You must ensure your consumer unit can safely support the changes. That often means an upgrade is required before work begins.
Is a plastic fuse board illegal?
Not illegal, but non-compliant with current regulations. If upgrading or doing new work, you’ll need to replace it.
Can I install a consumer unit myself?
No. Only qualified electricians can legally carry out this work, and it must be certified.
What happens if I ignore the advice to upgrade?
Your home may fail future inspections, and insurance claims for electrical fires could be denied.
We take compliance seriously — because it protects you, your family, and your property. Every fuse board upgrade we carry out is:
👉 Book your compliance check or quote today.
