Older or limited protection
If the existing board has limited protective arrangements, JSR can assess what is present and what an upgrade would change for the installation.
JSR ELECTRICAL · CONSUMER UNITS
Upgrade the protection, not just the box.
A consumer-unit replacement should start with the condition of the installation, the circuits it protects and what the property needs next. JSR assesses the electrical picture before recommending an upgrade.
HomesManaged propertyPlanned upgrades
START WITH THE REASON
A new consumer unit is not the answer to every electrical problem.
It can be part of a sensible upgrade, but the recommendation should follow the installation rather than the other way around.
Planned electrical changes
Renovation, added circuits, EV charging or other planned work may change the demands on the installation. The consumer unit is considered as part of that wider design.
Tripping or unexplained faults
Repeated tripping does not automatically mean the consumer unit needs replacing. The fault should be diagnosed first so the right problem is solved.
Explore fault finding →ASSESS BEFORE REPLACING
Older does not automatically mean unsafe. Condition and suitability matter.
WHAT WE LOOK AT
The board only makes sense in the context of the installation.
Before an upgrade is agreed, the existing electrical installation needs enough information to identify defects, limitations and anything that could affect the replacement.
- Earthing, bonding and the condition relevant to the proposed work.
- Circuit arrangements, protective devices and existing RCD protection.
- Signs of faults, damage or circuit issues that need resolving first.
- Future plans such as renovation, new circuits, EV charging or higher electrical demand.
WHEN AN UPGRADE IS APPROPRIATE
Protection, testing and a clear handover.
The final design depends on the installation. JSR explains what is being changed and why before the work proceeds.
Appropriate circuit protection
Protective devices are selected for the circuits and installation rather than treated as a one-size-fits-all package.
Surge and additional protection
Surge protection and other protective measures are considered where applicable to the installation and the work being designed.
Testing, labelling and records
The completed work is tested and documented as appropriate, with circuits labelled so the property is easier to understand afterwards.
HOW IT MOVES FORWARD
Three stages. No unnecessary replacement.
JSR keeps the recommendation, the electrical work and the evidence connected.
- 01 · ASSESSUnderstand the installation.
Share what is prompting the enquiry and any planned electrical changes. JSR establishes what needs checking before a recommendation is made.
- 02 · AGREEConfirm the right scope.
If replacement is appropriate, the proposed consumer-unit work, any enabling or remedial items and the intended protection are agreed before installation.
- 03 · INSTALL & TESTComplete and hand over.
The agreed work is installed, tested and documented as required, with the next steps explained if anything else has been identified.
CONSUMER UNIT ENQUIRY
Tell us what you have now and what you want the property to do next.
Electrical work is assessed against the requirements applicable to the installation and the work at the time. In England, replacement of a consumer unit is notifiable building work under Part P. The appropriate certification and notification route is confirmed as part of the agreed job. Official Part P guidance ↗ Specific availability, price and scope are confirmed after the enquiry.