Ground protection

ANSI/IEEE C37.101/1993 Guide for generator ground protection ... 

Keep it covered Persistent heavy rain can erode soil and leach out its nutrients. A covering of plants, or in winter, a mulch over bare ground, protects the soil structure. 

Ground protective relay is a relay that functions on failure of the insulation of a... 

Plugging the cord of the fan into an extension cord which is then plugged into the permanent wiring of the building that has grounding protection in the outlet would seem to provide adequate protection, but since that extension cord is considered to be temporary wiring, the fan would need a GFCI per 1910.304(b)(3)(ii). 

Antistatic agents require ambient moisture to function. Consequently their effectiveness is dependent on the relative humidity. They provide a broad range of protection at 50% relative humidity. Much below 20% relative humidity, only materials which provide a conductive path through the bulk of the plastic to ground (such as carbon black) will reduce electrostatic charging. 

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