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Q2. With reference to testing High Voltage equipment:

(a) Explain why earthing down is considered essential.

(b) Briefly describe the procedures of earthing down

(c) describe how an insulation resistance test is carried out on High Voltage equipment, making reference to personnel safety;

(d) Describe, with the aid of a sketch, a method to detect earth leakage in EACH of the following systems:

(i) Earthed

(ii) Insulated