26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. Safety of Personnel: By safely channeling fault currents into the ground, proper grounding helps to reduce the risk of electric shock to personnel. This helps to reduce the potential difference that exists between conductive parts and the earth. Think of it this way: That distribution box in your facility? It's not just a metal container – it's the quarterback coordinating all electrical flows. As for your title question: yes, it's sufficient to ground an outlet only to its box -- if, and only if, the box itself is properly grounded. It establishes a dedicated, low-resistance return path for stray electrical current, preventing dangerous voltage from building up on conductive surfaces. Preparation: First, you need to prepare some necessary tools, including grounding wire, grounding rod, voltmeter, insulating gloves and insulating tools.
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