Plenty of London homes still run on a board that was fitted decades ago. Rewireable fuses, a single old trip covering everything, or a plastic board in a hall cupboard that has been added to over the years. A modern consumer unit gives every circuit its own protection, so a fault in one room no longer kills the power to the whole flat. It also picks up earth faults that an old fuse would sit through.
In a converted flat the board is often squeezed into a cupboard or a hallway alcove, so getting a new one in tidily takes some thought. I check the earthing and bonding first, because a new board on an old supply arrangement is not safe on its own. Once it is in I test every circuit, hand over the certificate and notify the work as an NICEIC Approved Contractor. You get one price agreed before I start.
Earthing checked first
A new board is only as safe as the earthing and bonding behind it, so I test and correct those as part of the job rather than as an extra.
Tight spaces handled
Hall cupboards, alcoves and meter cupboards in converted flats are the normal working conditions here, and the finished board is left neat and clearly labelled.
Certified and notified
You get the electrical installation certificate and the work is notified properly, so it is on record when you come to sell or let.
Your questions, answered
How much does a new fuse box cost in London?
Most consumer unit replacements land between £600 and £1,100 for a typical home, depending on the board and the number of circuits. Older installations needing remedial work first sit higher, and I confirm the figure before starting.
How long will the power be off?
Usually most of a working day. I get the new board live again the same day in nearly every case, and I tell you first thing if anything looks likely to change that.
Do I have to upgrade if my old board still works?
There is no law forcing it in your own home. It is worth doing if you have no RCD protection, a rewireable fuse board or nuisance tripping, because those are the setups that leave you exposed.
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