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Case study / Apartment building

A 20-amp two-pole breaker feeding a crawlspace heater, severely overloaded and failing to trip, with temperatures exceeding 390°F inside the house panel.

Critical
FacilityApartment building
ScaleMultifamily residential
EngagementElectrical infrared inspection
Max temp393.6°F
Delta T329.6°F

The situation

Inspection of the building's house electrical systems, including the common area house panel supplying fire alarm circuits and exterior lighting.

The finding

A 20-amp two-pole breaker feeding a crawlspace heater, severely overloaded and failing to trip, with temperatures exceeding 390°F inside the house panel.

The outcome

Flagged as critical and communicated to the site contact immediately. Repaired within the hour. The panel supplied fire alarm equipment and exterior lighting, and the extreme heat also created a fire concern that was resolved through immediate corrective action.

Related industry: Multi-Family and Condos

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