Thermographic surveys carried out on live, fully loaded installations using FLIR imaging equipment — finding overheating connections, phase imbalance and failing components before they become failures.
Electrical connections do not usually fail without warning. They heat up first — often for weeks or months — as a termination loosens, a breaker degrades or a circuit runs closer to its limit than it should. That heat is invisible to the eye and undetectable on a standard visual inspection, but it shows up immediately on a thermal image.
DTF Electrical carry out thermographic electrical surveys across Liverpool, Kirkby and Merseyside using FLIR thermal imaging equipment, on live installations under normal working load.
Overheating connections are one of the leading causes of electrical fire in commercial buildings. A thermal survey identifies them while they are still a maintenance item rather than an incident.
A failed connection in a distribution board can take out a production line, a refrigeration system or an entire floor of a building. Finding it in advance converts an emergency into a scheduled job.
Insurers increasingly expect thermographic surveys as part of a proper electrical risk management regime. A documented annual survey demonstrates active management of that risk.
Surveys are carried out with the installation live and under normal load — that is the only way heat-related faults reveal themselves. Your business keeps running while we work.
A thermal survey and a fixed wire test answer two different questions. Together they give you a genuinely complete view, and combining them into one visit costs substantially less than booking them separately.
If you manage a building and have never had a thermal survey done, it is one of the few electrical services that routinely pays for itself the first time it finds something.
Common Questions
Annually is the usual recommendation for most commercial and industrial installations. Sites with heavy or variable loading, older switchgear, or critical processes that cannot tolerate downtime often benefit from more frequent surveys.
No — quite the opposite. A thermal survey has to be carried out with the installation live and carrying its normal working load, because that is the only condition under which a loose or failing connection generates the heat that makes it visible.
Insurers commonly ask for thermographic surveys as part of risk management. Our reports include thermal images, temperature readings, severity grading and recommended actions — which is the information insurers typically want to see.
Yes, and we would usually recommend it. Booking them as a single visit is more cost-effective and gives you a far more complete picture of the installation's condition.
Most commonly loose or deteriorating terminations, which heat up long before they fail outright. Also overloaded circuits, imbalanced phases, failing breakers and contactors, and undersized or damaged cabling.
