SERVICE 03

Consumer Unit Upgrade

Modern, fully protected consumer units, fitted, tested and certified in a single day.

Consumer Unit Upgrade Photo
SERVICE 03

Consumer Unit Upgrade

If your home still has an older fuse wire or rewireable fuse board, it needs upgrading. Modern consumer units provide RCD and RCBO protection which can save lives by cutting power in milliseconds if a fault is detected.

A consumer unit upgrade is also often required by insurers, or before adding an EV charger or home extension. We'll complete the work in a single day in most cases.

What's Included

New consumer unit with RCD/RCBO protection
All circuits individually labelled
Safe disconnection and reconnection of all circuits
Full test report and certification
Notified to Building Control (Part P)
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MORE DETAIL

Everything You Need To Know About Consumer Unit Upgrades

How the upgrade process works

We isolate the supply with your DNO cut-out, remove the old board, fit the new metal-clad consumer unit, then individually reconnect, test and label every circuit. The whole installation is then tested end-to-end before power is restored.

Typical timescales

A standard upgrade is a one-day job, usually 6 to 8 hours including testing and paperwork. Power is off for most of that time, so plan ahead with anything that needs to stay running.

RCBO vs split-load

We default to a fully RCBO-protected board which gives every circuit its own individual RCD and MCB. This means a fault on one circuit doesn't take out half the house, much more practical than older split-load designs.

What affects the cost

Number of circuits, brand of board, access to the cut-out, and whether circuit cables need extending all factor in. Older installations sometimes need additional remedial work (replacing damaged cable tails or fitting an earth rod) which we'll flag before starting.

When you'll be required to upgrade

Insurers, mortgage providers, EICR inspectors and EV installers will all flag a wooden-backed or fuse-wire board as inadequate. Any major works, extension, loft conversion, rewire, EV charger, will normally require an up-to-date consumer unit.

GOT QUESTIONS

Consumer Unit Upgrade: Common Questions

Yes. A consumer unit replacement is notifiable work under Part P. We self-certify the work and a Building Compliance Certificate is issued within 30 days.

You'll be without mains power for most of the working day. We can usually arrange a temporary supply for a single appliance if needed, let us know in advance.

Yes, but a sensitive new RCBO will reveal hidden faults that an old fuse never spotted. Occasionally an older appliance with a leaky element will trip and need repair or replacement, we'll diagnose it on the day.

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