Periodic inspection and testing for commercial premises — from single units to multi-board three-phase sites. Tested in phases around your operation, with out-of-hours working available and remedial work handled in-house.
Every fixed electrical installation degrades over time. Connections work loose under thermal cycling, insulation breaks down, circuits get extended and modified over the years, and equipment gets added that the original design never anticipated. Fixed wire testing is how you find those problems before they cause a fire, a failure or an injury.
DTF Electrical Contractors carry out fixed wire testing and commercial EICRs across Liverpool, Kirkby and the wider Merseyside area, on everything from single retail units to multi-board sites running three-phase distribution across several floors.
Plenty of contractors will happily test a small shop. Fewer are properly equipped for a site with multiple distribution boards, three-phase sub-mains and a client who cannot afford to close. That is the work we actively want.
For a shop, an office or a restaurant, downtime during trading hours is the single biggest cost of an electrical inspection. We work evenings, weekends and overnight so that cost disappears — agreeing a schedule in advance and leaving the premises ready to open.
An unsatisfactory report is only a problem if you then have to go and find someone to act on it. We carry out the remedial work ourselves — board changes, circuit repairs, replacing damaged accessories, correcting earthing and bonding — so the issue is closed out by the same team that identified it.
Fixed wire testing tells you the condition of the installation when it is isolated and tested. A thermal imaging survey tells you how it behaves when it is live and fully loaded — which is when overheating connections and phase imbalance actually reveal themselves.
If you would rather not track testing intervals yourself, an electrical maintenance contract puts your fixed wire testing, emergency lighting cycle and PAT schedule on one managed calendar, with priority response if something goes wrong in between.
Common Questions
It depends on the type of premises and how it is used. Offices and shops are commonly tested every five years, industrial units every three, and higher-risk environments more frequently still. We will recommend an interval based on what we actually find on site rather than applying a blanket figure.
They describe the same process. Fixed wire testing is the term used more commonly in commercial and industrial settings, while EICR — Electrical Installation Condition Report — is the name of the document produced at the end of it.
Rarely. On most sites we test in phases, taking one board or one section of the installation out of service at a time while the rest of the premises continues operating. Where a full isolation genuinely is required, we will usually do it out of hours.
An unsatisfactory result means one or more observations have been coded C1, C2 or FI, which require action. We explain in plain terms what each item means, how urgent it is and what it will cost to put right. Because we carry out remedial work ourselves, you are not left trying to find a second contractor.
Yes. We regularly carry out testing during evenings, weekends and overnight for retail units, offices and other premises where daytime disruption is not an option.
Yes, and it is a large part of what we do. We work regularly on three-phase distribution, sub-mains, and sites running multiple distribution boards across several floors or buildings.
