Thermographic Electrical Inspection
Non-contact thermal scanning that detects electrical faults before they cause failures, fires, or costly downtime
5 Highlights on Thermographic Electrical Inspection
- Hot spot detection without shutdown —Thermographic electrical inspection scans energized panels, switchgear, busbars, and circuit breakers while your system stays live, capturing heat signatures that indicate loose connections, overloaded conductors, or failing components before a fault occurs.
- Infrared camera imaging with calibrated emissivity values — Our thermal imagers record precise Delta T readings across terminals, lugs, splices, and joints, giving you documented baseline data for every anomaly found.
- NETA and NFPA 70E compliant reporting — Every thermographic inspection produces a detailed report with isotherm images, temperature differentials, severity classifications, and recommended corrective actions aligned to IEEE and NETA standards.
- Three-phase load balancing assessment — Unbalanced phase loads generate excess heat in conductors and transformers. Thermal scanning identifies resistive and inductive imbalances across distribution boards and switchboards.
- Arc flash and ground fault risk reduction — Identifying defective, corroded, or degraded connections early reduces arc flash exposure and ground fault risk, directly supporting your PPE and safety equipment protocols under NFPA 70E.
Why Choose Our Thermographic Electrical Inspection
Kochs Electric brings qualified, licensed electricians to every thermographic electrical inspection – not just camera operators. That distinction matters. Our technicians bring years of field experience in electrical diagnostics to every job, reading thermal images with a working knowledge of electrical systems so they connect what the infrared camera captures to what’s actually happening inside your panel, transformer, or switchgear.
We use calibrated thermal imagers with verified emissivity settings for each surface type. Reflective conductors, insulated cables, and bare busbars all emit radiation differently. Misread emissivity values produce inaccurate temperature readings. We account for ambient conditions, load levels, and surface characteristics before we record a single image.
Our inspection reports go beyond flagging hot spots. Each report documents the component, its location, the measured Delta T, the severity rating, and the recommended repair or replacement timeline. You get a clear picture of what needs attention now versus what to monitor on the next inspection cycle. Our field evaluations are thorough, documented, and designed to support long-term reliability services for your facility.
Kochs Electric carries full liability insurance and operates under NFPA 70E arc flash safety protocols. Our inspectors wear appropriate PPE and follow energized work procedures on every job. We schedule inspections during peak load conditions when thermal anomalies are most visible and most accurately measured.
Clients across commercial, industrial, and institutional facilities trust Kochs Electric for thermal imaging inspections because we combine electrical expertise with thermal imaging precision. Our thermographic evaluations are part of a broader approach to preventive maintenance that keeps your facility running without unplanned shutdowns.
Signs You Need Thermographic Electrical Inspection
1. Tripping circuit breakers with no clear cause: A circuit breaker that trips repeatedly under normal load may be responding to heat buildup at a loose terminal or a degraded connection upstream. Thermographic inspection scans the full circuit path, from the distribution board to the load, and identifies where resistance is generating abnormal heat before the breaker fails completely.
2. Visible corrosion on panel terminals or lugs: Corroded terminals increase contact resistance. Higher resistance generates more heat. That heat accelerates further corrosion and conductor degradation. Moisture intrusion and hidden damage to insulation are common contributors to elevated resistance at terminal points. Thermal imaging captures the heat signature of corroded connections even when the corrosion itself isn’t visible without removing covers, giving you a clear picture of condition before committing to re-termination or replacement.
3. Unexplained increases in energy costs: Resistive losses from loose splices, faulty contactors, or unbalanced three-phase loads waste energy as heat. If your electrical consumption has climbed without a corresponding increase in operational load, thermographic inspection can locate the components radiating excess heat and costing you money.
4. Aging switchgear or transformers past their service interval: Older switchboards, transformers, and capacitors develop internal faults that don’t trigger alarms until failure is imminent. Thermal scanning detects overheated windings, degraded insulation, and failing capacitors by the heat they emit. It also reveals hidden damage and deteriorating condition in mechanical components such as bus connections and mounting hardware, catching those issues before they escalate to an unplanned outage.
5. Pre-occupancy or post-renovation electrical verification: After new wiring, panel upgrades, or new equipment installation, a field evaluation using thermographic inspection confirms that every connection, terminal, and conductor is properly terminated and carrying load without generating anomalous heat. It catches issues early, before they become failures, and provides a documented baseline for future inspections and a verification that the installation meets applicable performance standards.
Our Thermographic Electrical Inspection Process
Step 1 — Pre-inspection load verification We confirm your electrical system is operating at or above 40% of rated load before scanning begins. Thermal anomalies are most detectable under real operating conditions. Low-load inspections miss faults that only appear when circuits are energized and carrying current. Our field technicians also note visible damage, moisture concerns, and the general condition of accessible mechanical components before the thermal scan begins.
Step 2 — PPE setup and energized work compliance Our inspectors don appropriate PPE per NFPA 70E requirements before approaching any energized panel, switchgear, or distribution board. We review the arc flash hazard analysis for your facility and follow all energized work procedures.
Step 3 — Systematic thermal scanning We scan each panel, busbar, circuit breaker, fuse, transformer, contactor, disconnect, and conductor termination with a calibrated infrared camera. We adjust emissivity values for each surface type and record isotherm images of every component.
Step 4 — Anomaly identification and Delta T measurement We identify hot spots, compare measured temperatures against ambient and baseline values, and classify each anomaly by severity using NETA and IEEE standards. Defective, overloaded, or corroded components get flagged with precise Delta T readings.
Step 5 — Documented report delivery You receive a complete thermographic inspection report with thermal images, component locations, temperature data, severity classifications, and prioritized repair recommendations. We walk you through the findings and answer questions about next steps. If your project requires follow-up work, you can request applicable repair services directly through Kochs Electric.
Brands We Use
Kochs Electric uses professional-grade thermal imaging equipment and electrical testing tools from manufacturers recognized across the industry for accuracy and reliability.
- FLIR
- Fluke
- Seek Thermal
- Testo
- Hioki
- Megger
- Klein Tools
- Ideal Industries
- Greenlee
- Milwaukee Tool
All thermographic electrical inspections at Kochs Electric are performed by qualified electricians wearing NFPA 70E compliant PPE. We never bypass safety protocols to speed up a scan.
Other Services
| Thermographic electrical inspection | Infrared electrical inspection | Hot spot detection in electrical panels |
| Thermal imaging for electrical systems | Infrared thermography electrical | Delta T measurement electrical faults |
| Electrical thermography services | Thermal scan electrical panel | NETA thermographic inspection standards |
| Infrared electrical panel inspection | Thermal imaging switchgear | Energized electrical system scanning |
| Thermographic inspection electrician | Electrical heat signature analysis | NFPA 70E thermal inspection compliance |
FAQs About Thermographic Electrical Inspection
What is thermographic electrical inspection?
Thermographic electrical inspection is a non-contact diagnostic service that uses an infrared camera to detect heat anomalies in energized electrical systems. It identifies loose connections, overloaded conductors, corroded terminals, failing circuit breakers, and other defective components by the abnormal heat they emit during normal operation. These evaluations provide documented evidence of system condition without requiring a shutdown.
When should I schedule a thermographic inspection?
Schedule thermographic electrical inspection annually as part of your preventive maintenance program for commercial and industrial facilities. Inspect after major electrical work, equipment installation, or any event that stresses your system – like a short circuit, ground fault, or overload. Aging switchgear and transformers benefit from more frequent scanning.
Why does the system need to be energized and under load?
Electrical faults generate heat through resistance. That heat only appears when current flows through the circuit. A de-energized system shows no thermal anomalies. For accurate results, your system should be operating at 40% or more of rated load during the inspection.
How does thermographic inspection differ from a standard electrical inspection?
A standard electrical inspection checks wiring, connections, and code compliance visually and with test instruments. Thermographic inspection captures heat signatures across every energized component simultaneously, detecting faults that look fine visually but are already degrading under load.
Can thermographic inspection prevent electrical fires?
Yes. Most electrical fires start at loose connections, corroded terminals, or overloaded conductors that generate heat over time. Thermographic inspection detects those heat sources early, giving you time to repair or replace the faulty component before it reaches ignition temperatures.
Does Kochs Electric provide repair services after the inspection?
Yes. Kochs Electric is a full-service electrical contractor. After your thermographic inspection report, you can request repair or replacement of any defective components identified – loose terminals, damaged conductors, failing circuit breakers, or corroded connections – and our electricians will handle the work, giving you a complete solution from a single qualified team.