Electrical arcing or overheating

Abnormal current path can create extreme heat and ignition.

Urgency profileStop / critical

Use timing, location and checks to separate competing explanations.

Critical safety interlock

Stop and make the area safe

Do not continue ordinary troubleshooting until the immediate hazard has been addressed.

Leave the affected area and contact the appropriate emergency or licensed professional service.

Abnormal current path can create extreme heat and ignition.

Do not continue ordinary DIY troubleshooting when this hazard is plausible. Move to the relevant emergency, utility or qualified-professional path.

Only record what can be observed without approaching, opening or energizing the hazardous area.

The original building symptom still needs a source investigation and verification plan.

Observe→Distinguish→Control source→Verify

Living dossierPublished knowledge is connected and improved as new cases, images and outcomes are added. Updated 2026-07-20.