Electrical panels can look normal from outside while internal joints, lugs, busbars, and breakers heat under load. Thermal imaging gives maintenance teams a non-contact way to identify these risks.
What thermography detects
- Loose terminations and high-resistance joints.
- Overloaded circuits and phase imbalance.
- Hot breakers, contactors, and cable glands.
- Early signs of insulation stress.
When to scan
Thermography is most useful when panels are under representative load. Scanning during low load may miss the actual thermal stress.
A thermal image is only useful when paired with load data, severity grading, and corrective action tracking.
Follow-up
Repairs should be rechecked after tightening, replacement, load balancing, or panel redesign.