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Small electrical jobs Lights, switches, sockets and grouped minor fixes. Fault finding Tripping circuits, dead points or unclear symptoms. Electrical repairs Contained repairs once the likely issue is clearer. Sockets and switches Accessory swaps, small upgrades and grouped points. Emergency electrician Unsafe, urgent or call-first electrical problems. EICR Inspection and report questions. Consumer unit replacement Board replacement, testing and compliance questions. Kitchen rewire Kitchen renovation wiring, appliances and first fix.

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Testing and verification during a consumer unit replacement

A new board is not just fitted and switched back on. Relevant checks are part of registered electrical delivery before handover and paperwork.

Written and checked by Willesden Smart Homes. Last reviewed August 2026.

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We serve homes across NW London after checking the postcode and the job. See the Areas page .

This guide explains what testing and verification means during a consumer unit replacement. It covers what is usually checked, why older faults can still change the scope, and how a clear handover depends on more than simply swapping the box.

What is normally being checked

  • The new consumer unit, circuit identification and labelling are checked against the agreed arrangement.
  • Relevant tests are carried out on the circuits being reconnected, so the work is based on measured checks rather than guesswork.
  • Protective devices and any final handover or paperwork are tied into the installation that has actually been completed.

What can change the scope

  • Testing can bring older problems to light, including poor previous alterations, damaged accessories or circuits that do not test as expected.
  • If that happens, the safe next step is to explain the finding clearly and agree what happens before the job moves on.
Official sources and further guidance

Need a quick answer on testing and verification?

Send your postcode, clear board photos with the cover closed, any tripping or overheating symptoms, and any recent report note that has already flagged the board.

Send details See the consumer unit plan