Generic electrical_connection Error Code Infrared Hot Spot - Connection

What does Infrared Hot Spot - Connection mean?

Thermal imaging survey identified a hot spot at an electrical connection, indicating high resistance requiring immediate attention.

Common causes

• Loose or under-torqued bolted connection
• Oxidized or corroded conductor
• Incompatible connector materials (Cu to Al without proper transition)
• Inadequate contact area at lug
• Overloaded conductor

Diagnostic & testing steps

1. 1. Document ΔT (temperature difference from ambient)
2. 2. ΔT 1-10°F: Monitor, schedule maintenance
3. 3. ΔT 11-30°F: Schedule repair within 30 days
4. 4. ΔT 31-50°F: Schedule repair within 7 days
5. 5. ΔT >50°F: IMMEDIATE repair - fire risk
6. 6. After de-energizing with LOTO, tighten to torque spec
7. 7. Apply anti-oxidant compound on aluminum connections

Tools required

• FLIR thermal camera
• Torque wrench (calibrated)
• Anti-oxidant compound

OEM parts & part numbers

Compression Lug, Anti-Oxidant Compound

Safety warning

⚠️ ARC FLASH HAZARD: Thermal imaging must be performed with panel doors open while energized - requires Category 2+ PPE. ΔT >50°F is EMERGENCY - immediate de-energization required.