From the "Lessons Learned" Department

Here is wisdom:

While working on equipment racks with devices electrical within, that may or (more likely) may not be properly grounded, it would considered a Good Thing to power off said equipment and unplug or throw breakers for the same.

If you choose not to follow these words, remember that electrical cooking is a slothful process, and a technician may sizzle in his own fat for A Good Long While, before the Big Engineer in the Sky sees fit to end his suffering.

Here endeth the lesson.

TBG, singed and shaking...