5 Signs Your Fuse Board Needs Replacing (UK Homes 2026)

Your fuse board (also called a consumer unit) is the most safety-critical bit of electrical kit in your home. If it’s old, you’re not getting the protection modern wiring regulations require. Here are the five clear signs it needs upgrading — written by NICEIC accredited electricians.


1. It still has rewirable fuses (the old wire-and-screw type)

If you’ve ever replaced a “fuse” by unscrewing it and threading a thin piece of wire across two terminals, that’s a rewirable fuse. They were standard from the 1930s to the 1970s. They’re dangerous.


2. It’s a split-load board fitted between 1990 and 2010

Split-load boards have one or two RCDs covering several circuits each. They’re now a C3 observation on a modern EICR.


3. Your breakers trip frequently under normal use

Random nighttime trips? Kettle + toaster flips a breaker? That’s either a fault or undersized circuits. Get an EICR.


4. Visible damage, scorch marks, burning smell

Brown / black discolouration around any fuse holder, cracking in the plastic, or an acrid smell = call an electrician today. Live fire risk.


5. It’s plastic, in a hallway, fitted before 2016

Post-2016 consumer units must be non-combustible (metal). Older plastic boards in escape routes are now flagged C3 on an EICR.


What a modern consumer unit looks like

Metal enclosure, all-RCBO design (every circuit individually protected), Surge Protection Device, AFDD on bedroom circuits. £450-£650 fitted in a London flat.


What to do next

If any of these signs apply: get an EICR or go straight to a fuse board replacement quote. We cover Camden, Islington, Hackney, Tower Hamlets, Southwark and surrounding Inner London.

Phone: 07407 627542

WhatsApp: Send us a photo of your fuse board and we’ll tell you straight.

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