Why is the yellow wire in the distribution box grounded
The yellow-green wire is a dedicated conductor used for protective earthing (Protective Earth, PE) in electrical systems. Its primary function is: When leakage current or insulation failure occurs in equipment, it safely conducts dangerous current into the ground, preventing. They make it easy to identify immediately which wires are live, neutral, or grounded (avoiding costly mistakes and hazardous accidents). An earthing system, also known as a grounding system or electrical grounding, is a safety mechanism that connects electrical installations directly to the ground to divert possible leakage currents or power surges and prevent harm to people and equipment. 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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