01
Identify the wiring changes you need
Condition concerns, a new floor plan and additional equipment are different reasons for changing an installation. Tell the electrician what prompted the work. An existing inspection report can help define a concern, while drawings and equipment specifications explain the needs of a planned project.
02
Rewiring, consumer units or new circuits?
A rewire replaces a defined extent of fixed wiring. Consumer-unit work changes the equipment that distributes and protects circuits. An additional circuit provides a separately designed supply for a particular area or load. One project can include more than one, but none should be automatically assumed to include the others.
03
Assess the existing wiring before an upgrade
Before choosing the scope, consider existing reports, the circuits that will be retained and the equipment the finished property must support. Access to floors, ceilings and distribution equipment may affect what can be assessed. Ask the electrician to explain the findings behind any proposed additional work.
Guidance: Electrical Safety First: consumer unit replacement
04
Wiring work, access and disruption
Wiring routes can affect finishes throughout a property, not just at the final fitting. Discuss room access, occupancy and the order of other trades. If the work is part of a renovation, decide socket and lighting positions early enough to avoid changing completed wiring after walls are finished.
05
Request wiring upgrade quotes
Give the property type, intended changes and any known concerns. Ask for a scope that identifies what is replaced, what remains and what testing or documentation is included. This is especially useful when comparing a targeted circuit addition with a larger proposal for upgrading the installation.
Electrical service questions
Questions about wiring upgrades
Is replacing a consumer unit the same as rewiring?
No. They concern different parts of the installation. A consumer-unit replacement may require work identified by assessment, but it does not itself mean all wiring is replaced.
Can only part of the wiring be upgraded?
A partial upgrade may be possible where its boundaries and retained wiring can be assessed. Ask what is included and how the new and existing parts will work together.
What records are useful before an assessment?
Previous inspection reports, installation certificates, circuit information and plans for new equipment are useful. Do not remove covers to obtain information you do not already have.
