Why does the earthing port of a wire is thicker than live and neutral

Question

Accepted Answer

The earthing port of a wire is thicker than live and neutral to ensure safety and provide a low-resistance path for fault currents.

Earthing is essential to protect against electric shock and to prevent damage to electrical equipment.
Thicker earthing wire reduces resistance and allows fault currents to flow easily, facilitating the operation of protective devices like circuit breakers.
The larger cross-sectional area of the earthing wire helps dissipate heat generated during fault conditions.
Earthing wire thickness also depends on the maximum fault current that the system can experience.
Example: In a residential electrical system, the live and neutral wires may be 2.5 mm², while the earthing wire could be 4 mm².

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