2) This pump is provided with a means for grounding. To reduce the risk of electric shock
from contact with adjacent metal parts, bond supply box to the pump-motor-grounding
means and to all metal parts accessible at the well head, including metal discharge pipes,
metal well casing, and similar parts, by means of:
i) An equipment-grounding conductor at least the size of the well-cable
conductors, or the equivalent, that runs down the well with the well cable and
ii) A clamp, a weld, or both when required, secured to the equipment-grounding
lead, the equipment-grounding terminal, or the grounding conductor on the pump
housing.
The equipment-grounding lead, when one is provided, is the conductor that has an outer
surface of insulation that is green with or without one or more yellow stripes.″
b) For a cord and plug-connected pump, the word ″WARNING″ and the following instructions or
the equivalent: ″Risk of electric shock – This pump is supplied with a grounding conductor and
grounding-type attachment plug. To reduce the risk of electric shock, be certain that it is
connected only to a properly grounded, grounding-type receptacle.″
56.1 revised March 29, 1999
MARCH 29, 1999 MOTOR-OPERATED WATER PUMPS - UL 778 69
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