Consumer Unit Replacement
An illustrative example of assessing an existing fuse board, selecting suitable protection and planning a consumer unit upgrade.
This illustrative example explores the assessment and planning of a domestic consumer unit replacement. It considers a homeowner who wants to understand whether their existing fuse board offers suitable protection and whether an upgrade would be appropriate.
The starting point is an assessment of the existing consumer unit, associated circuits and available electrical records. Known faults, previous EICR observations and planned alterations help establish the installation requirements. Any defects requiring further investigation or remedial work would be explained before proceeding.
The proposed solution would identify a suitable consumer unit and protective arrangement. Options may include a Dual RCD Board, individual RCBO protection or RCBO protection with additional arc-fault detection. The selection would depend on the assessed installation rather than price alone.
The agreed work would cover the replacement equipment, installation requirements and any associated work. Access and interruption to the electrical supply would be discussed in advance. Installation would be followed by the required inspection and testing, appropriate certification and an explanation of the new equipment.
Spark’s indicative options are £699 for a Dual RCD Board, £825 for a Full RCBO Board and from £1,300 for RCBO with AFDD. These are service guide prices, not the cost of a completed project. The final scope, protection specification and price would be confirmed following assessment.
For further information, explore Dual RCD vs RCBO vs AFDD and What Happens During a Consumer Unit Upgrade?.
Planning a Consumer Unit Upgrade?
Tell us about your property and include any existing electrical report. A clear photograph of the current consumer unit, taken safely with its cover in place, can help us review your enquiry.