Power quality harmonics are one of the most under-discussed failure modes in industrial electrical systems. When non-linear loads — VFDs, rectifiers, switch-mode power supplies — pull current in distorted, non-sinusoidal waveforms, they inject harmonic currents back upstream. These harmonics don't just cause inefficiency; they overheat neutral conductors, saturate transformer cores, trip protection relays at "impossible" fault levels, and silently degrade capacitor banks until something catastrophically fails.

This podcast episode takes a case-study approach to a real factory incident where harmonic distortion was the hidden root cause. The format is worth highlighting: instead of generic theory, it walks through how the problem manifested, what the symptoms looked like to maintenance staff, and how the diagnosis was eventually pinned to harmonic content rather than a "normal" electrical fault. That diagnostic narrative is the most valuable part — recognizing that your relays tripping on phantom faults or your neutral running hotter than your phases is a harmonics signature, not a wiring problem.

Honest caveat: this is the strongest pick from a weak batch. Most other candidates here are Shorts, hashtag spam, or generic "engineering failure" clickbait. A long-form podcast on a real power quality phenomenon at least teaches a concept you can act on — and harmonics are exactly the kind of topic that small specialist channels cover better than mainstream content.