How to ground a high-level three-level distribution box

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Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. 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. The topic of system grounding is extremely important, as it affects the susceptibility of the system to voltage transients, determines the types of loads the system can accommodate, and helps to determine the system protection requirements. Safety of Personnel: By safely channeling fault currents into the ground, proper grounding helps to reduce the risk of electric shock to personnel. The concept is a simple one: provide a path for ground current via a resistance that limits the current magnitude, and.

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