Grounding, earthing, and GFCI choices
Metal enclosures should be bonded to earth so a fault trips protection instead of energizing a touchable surface. If local code or location suggests it, pair with a GFCI outlet, especially near kitchens or bathrooms. Keep protective earth conductors short, direct, and clearly marked, and never rely on paint for insulation. When earth isn’t available, double insulation becomes the priority: insulating bushings, sleeves, and separated compartments. Confirm continuity with a simple meter check, record results, and leave a discreet label so any future maintainer understands your protective strategy.