Answer / Shalini Verma

Calculating the earth mat design for a 132kV substation involves several steps, including soil resistivity testing, ground grid layout design, and calculation of required earth electrode size. You can refer to IEC 60364-5-1 (International Electrotechnical Commission standard) or ANSI/IEEE C270 (American National Standards Institute / Institute of Electrical and Electronics Engineers standard) for detailed procedures.

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