Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). Grounding is a mechanism to protect distribution equipment and people under normal operating conditions, abnormal operational (overcurrent and overvoltage) responses, and hazardous conditions such as shocks. Safety of Personnel: By safely channeling fault currents into the ground, proper grounding helps to reduce the risk of electric shock to personnel. This shift is driven by safety concerns, electromagnetic compatibility, system stability, and the evolving needs of modern power. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used.
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