SJI Electrical installs and upgrades consumer units for homes in Elderslie, Renfrewshire — based in Paisley, midway along the road between us and Johnstone.
The consumer unit is the central control point of your property’s electrical system. If yours is outdated or undersized, we’ll explain exactly why an upgrade matters before any work is agreed.
Most installations are completed within one day, depending on the property.
Three quick questions, then it goes straight to SJI on WhatsApp.
The consumer unit — the fuse board — is the central control point of a property’s electrical system. It’s where the incoming supply is split into circuits and where the protection for each of those circuits lives, so it’s usually the first thing worth looking at when something isn’t right.
Elderslie is a commuter village of around 5,480 people between Paisley and Johnstone. We won’t pretend to know what board is on your wall until we’ve seen it — but these are the situations that normally prompt the call:
Every upgrade follows the same careful sequence, whatever the property:

Safe isolation of the supply, followed by a proper inspection of the existing circuits before anything is removed.

The existing fuse board is removed and a modern consumer unit installed in its place, with clearer circuit identification.

Full testing of the installation before we call the job finished. If testing shows a wider wiring problem, we tell you.
House rewires in Elderslie →
Certification is issued on completion — useful if you’re preparing an Elderslie property to let or re-let.
EICR certificates in Elderslie →A modern consumer unit brings a property’s electrical protection up to current standards. That matters whether you’re staying put, adding circuits for an extension, or getting a property ready to let.
Because most installations are done inside a day and we’re only a short drive away in Paisley, an upgrade in Elderslie is usually a single agreed date rather than a drawn-out job.
We explain every stage before any work begins.
Get in touch with details of your Elderslie property and what’s prompting the upgrade.
We inspect the existing installation and explain the findings clearly.
A written quotation is provided before anything is agreed.
An agreed installation date — most jobs are completed within a single day.
The new consumer unit is fully tested and certification is issued on completion.
Based in Paisley and upgrading consumer units across Elderslie and the rest of Renfrewshire:
Common signs include an older-style board still fitted, faults or frequent tripping, renovation work underway, a property being prepared for rental, or a need for additional circuits. If you’re unsure, we can inspect and advise.
Most installations are completed within one day, depending on the property.
The supply is safely isolated while the old board is removed and the new one installed. We’ll talk you through the timing when we quote so you can plan around it.
Yes. Every upgrade includes full system testing, and certification is issued on completion.
Yes. Consumer unit upgrades are a common request from landlords, particularly ahead of a new tenancy or alongside an EICR inspection.
Yes. If a full or partial rewire is already planned, a new consumer unit is normally fitted as part of that project rather than as a separate visit — we’ll advise on the sensible order of work.
If your consumer unit is outdated, tripping or simply not big enough for what the house now runs, contact SJI Electrical to arrange an inspection in Elderslie, Renfrewshire.