The four electrical tests that should be carried out on a new ring final circuit before it is energized are

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* a) Continuity of protective conductors, continuity of ring final circuits, insulation, - resistance and polarity
* b) Continuity of ring final circuits, insulation resistance, polarity, and earth fault loop - impedance
* c) Insulation resistance, polarity, earth fault loop impedance and continuity of protective - conductors
* d) Polarity, earth fault loop-impedance, continuity of protective conductors and Continuity of ring final circuits

Answer - a
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