12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
Failure Fingerprint

Overloaded electrical circuit

Connected demand exceeds the intended circuit capacity.

Criticalurgency profile
Typical location

Circuit serving high-power appliances or many loads

Timing fingerprint

Under heavy load

Visible or audible pattern

Breaker operation, warmth or voltage drop

Best separating check

Reduce load and have circuit capacity assessed

Evidence that weakens this cause

Buzzing at one device with no load