Electrical condition monitoring for commercial and industrial sites
Electrical Thermal Imaging and Condition Monitoring Across Scotland
Baseline and repeat thermographic surveys that help identify abnormal heat patterns, prioritise follow-up work and monitor electrical asset condition over time.
We plan the survey around safe access, representative operating load and the assets that matter most. Findings are reported with visual references, practical priorities and a route to investigation, remedial work and repeat verification.
See condition under operating load
Thermal patterns are most useful when equipment is accessible and carrying a representative load. Survey conditions and limitations are recorded so findings can be interpreted in context.
Baseline and repeat surveys
Build comparable condition history around important assets
Loaded electrical assets
Survey timing planned around meaningful operating conditions
Prioritised reporting
Thermograms, references, context and recommended actions
Established 1989
Long-standing electrical contractor
Contractor assurance and recognised accreditations
Condition checks for important electrical assets
Where Electrical Thermal Imaging Adds Useful Evidence
The survey scope should reflect the site, the equipment that matters to operations and the conditions needed to obtain meaningful images. Common starting points include:
Distribution Boards and Switchgear
Main and sub-distribution equipment, protective devices, connections and terminations where they can be viewed within the agreed safe access arrangement.
MCCs and Control Panels
Motor feeders, contactors, control supplies and accessible connections serving operational plant, assessed around the equipment state and site controls.
Isolators and Plant Supplies
Fixed isolators, cable terminations and electrical supplies to production equipment, building services and other agreed critical assets.
Load Imbalance and Overloaded Components
Comparison of phases, conductors and similar components to highlight unusual heat patterns that need further investigation, load review or planned repair.
Critical Circuits and Continuity Assets
Electrical distribution serving production, refrigeration, IT, communications, charging or essential building services where an avoidable failure would be disruptive.
Pre-shutdown and Post-repair Checks
Use survey findings to prioritise work before a planned outage, then revisit repaired assets under suitable load to confirm the previous abnormal pattern has changed.
From asset scope to useful maintenance action
What Makes an Electrical Thermal Survey Useful?
A camera image is only one part of the work. The survey needs a defined asset scope, suitable operating conditions and findings linked to an actionable maintenance decision.
01
Define the Survey Scope
Identify the boards, panels, fixed supplies and critical assets to be included, together with known faults, previous findings and the purpose of the survey.
02
Scan Under Suitable Conditions
Coordinate access so equipment can be viewed safely while carrying a representative load where practicable. Record visual references and relevant survey conditions.
03
Prioritise and Plan Action
Interpret unusual patterns in context, report the assets needing attention and agree investigation, repair, monitoring or a repeat scan as appropriate.
Clear evidence, with clear limitations
What the Survey Can Record, and What It Cannot Prove
The agreed report turns visible heat patterns into traceable maintenance information. Its value depends on safe access, the equipment state, the recorded conditions and appropriate technical interpretation.
- Thermograms of accessible equipment within the agreed scope
- Visual reference images and asset or location details
- Observed load information where agreed and practicable
- Unusual patterns and temperature differences requiring attention
- Prioritised investigation, monitoring or remedial recommendations
- Comparison with earlier surveys where conditions are sufficiently similar
- Post-repair verification of a previously recorded heat pattern
- A route into planned preventative maintenance, compliance testing and corrective work
Thermal imaging is not a pass or fail certificate. Internal parts hidden behind barriers or covers may not be visible, and reflective surfaces can affect apparent temperature. A normal image does not rule out every electrical defect; an abnormal image does not establish the root cause without suitable investigation.
A repeatable condition-monitoring process
From Survey Brief to Reported Action
A consistent route makes the findings easier to act on now and more useful for comparison during future maintenance visits.
01
Set the asset scope
Confirm the sites, boards, panels and critical fixed supplies to be included.
02
Plan access and load
Agree operating conditions, permits, barriers, covers and safe viewing arrangements.
03
Capture the survey
Record thermal and visual images, asset references and relevant observed conditions.
04
Analyse and prioritise
Review unusual patterns in context and set out appropriate next actions.
05
Remediate and monitor
Investigate or repair agreed findings through suitable electrical equipment servicing or remedial work, then re-scan or schedule repeat monitoring where useful.
Condition information that improves over time
Build Condition History, Not Just a Folder of Images
A baseline survey creates a reference point. Repeat visits can then focus on critical assets, previous anomalies, completed repairs and changes that merit investigation, helping thermal imaging contribute to the wider Electrical Maintenance programme.
- Create a traceable baseline for named boards, panels and fixed supplies
- Repeat surveys under comparable conditions where practicable
- Track previous anomalies, recurring concerns and material changes
- Prioritise investigation and remedial work before planned shutdowns
- Re-scan repaired assets and feed open actions into planned maintenance
Need a standalone thermographic inspection? For a one-off survey focused on an insurance request, audit file or independent testing record, see Thermal Imaging Inspections.
Information That Helps Us Plan the Survey
You do not need a finished asset schedule. Useful starting information includes:
- Site address, on-site contact and survey purpose
- Boards, panels, plant supplies and critical assets to be considered
- Normal operating hours and when representative load is available
- Access, covers, barriers, permits and induction requirements
- Previous thermographic reports, faults, repairs or electrical findings
Condition monitoring shaped by the operating environment
Electrical Thermal Imaging for Working Premises
The assets, timing, access and reporting priorities should reflect how the premises operate and what an avoidable electrical failure would affect.
Offices and Commercial Property
Condition checks for distribution, plant rooms and agreed shared services, coordinated around occupiers, tenants and controlled access.
Warehouses and Logistics
Survey boards and circuits serving lighting, charging, loading and essential operational areas while representative site loads are available.
Manufacturing and Industry
Monitor switchgear, MCCs, control panels and plant supplies in production environments with permits and site-specific access controls.
Healthcare and Public Sector Estates
Structured surveys and prioritised records for operational buildings and estates where access, governance and continuity need careful coordination.
Condition-led investigation within continuing industrial support
Thermal Imaging Support for North British Distillery
WB Electrical has supported North British Distillery since 2016 across its Edinburgh distillery and associated warehousing sites. The published case study includes thermal imaging for condition-led investigation alongside planned work, reactive fault finding, inspection, testing and electrical improvements.
Client since 2016
Distillery and warehousing
Planning a useful electrical thermal survey
Thermal Imaging and Condition Monitoring FAQs
These answers explain what thermal imaging can contribute, the conditions it needs and how it fits into a wider electrical maintenance plan.
What does electrical thermal imaging show?
It records infrared radiation from visible surfaces and presents the resulting temperature pattern as a thermogram. Unusual differences between phases, connections or comparable components can indicate an area that needs investigation, monitoring or remedial work.
How is condition monitoring different from a one-off thermal inspection?
Condition monitoring uses a baseline and planned repeat visits to follow named assets, previous anomalies and completed repairs over time. A standalone thermal imaging inspection may be more suitable when the main requirement is a one-off audit, insurance submission or independent report.
Does the equipment need to remain energised?
Electrical thermal imaging is often most informative while equipment is energised and carrying a representative load. That does not remove the need for safe access. Covers, barriers, permits and approach to live equipment are agreed from the installation, site rules and risk assessment.
What load is needed for a meaningful survey?
There is no single load level that suits every asset. The aim is to scan during a normal or otherwise representative operating condition, then record the available context. Lightly loaded or idle equipment may not reveal a developing heat pattern that appears during heavier use.
Does thermal imaging replace an EICR or electrical testing?
No. Thermal imaging is a complementary condition-monitoring technique. It does not test all safety requirements, reveal every concealed defect or replace an EICR, periodic inspection or other task-specific electrical testing.
What can the survey report include?
The agreed report can include thermograms, visual reference photographs, asset or location details, relevant observed conditions, prioritised findings and recommended next actions. The required format, asset schedule and comparison with previous surveys should be agreed before the visit.
How often should electrical thermal imaging be repeated?
The interval should reflect asset criticality, operating hours, load, environment, previous findings, maintenance history and any client or insurer requirement. A baseline survey helps establish which equipment merits repeat monitoring and at what practical frequency.
What happens if an abnormal heat pattern is found?
The finding is considered against its location, load, comparable components and available history. Depending on the apparent risk, the next step may be prompt isolation, further electrical investigation, a planned repair, closer monitoring or a post-remedial re-scan. WB Electrical can scope suitable follow-up work by agreement, including reactive electrical support where a developing issue becomes an operational fault.
Share the site, assets and purpose of the survey
Plan an Electrical Thermal Imaging Survey
Send the information you already have. WB Electrical will review the site, asset scope, operating conditions, access, survey purpose and reporting requirement before recommending a practical next step.
Helpful Information for Survey Planning
- Company, site contact and person authorised to agree the survey
- Full site address, postcode and arrival instructions
- Purpose of the survey, such as baseline, recurring monitoring or investigation
- Approximate number of boards, panels, isolators and fixed supplies
- Priority assets and the operations they support
- Normal operating hours and representative load windows
- Board labels, asset schedules, diagrams and useful photographs
- Previous thermograms, electrical reports, faults and completed repairs
- Induction, permit, escort, barrier and access requirements
- Whether doors, covers or viewing windows are available
- Any current overheating, tripping or intermittent concerns
- Required reporting format, timescale and purchase-order process
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