Case 2632 ยท Public preview

Inadequate Insulation and Fractured Supports Can Collapse Electrical Clearances

Multiple circuit breakers showed internal flashover, thermal damage, and fractured plastic housing or support features.

External optical examinationElectrical continuity testingAssembly teardownBackscattered-electron SEMEDS
Preview image for Case 2632

What the evidence preview establishes

The flashovers resulted from exposed portions of a manually formed bus conductor, an uninsulated metal shaft through a circuit-board opening, and weak plastic parts that could shift internal clearances.

Why this case matters

Electrical clearance depends on the structure maintaining it. Insulate formed conductors, isolate metal pass-through hardware, tool the bend geometry, and treat cracked supports as electrical-safety defects.

Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.