Continuity of CPC - Test method 1 R1 + R2, Continuity test method 2 - Long wander lead R2, Continuity of ring final circuit - Step 1 measure end to end resistance, Continuity of RFC - Step 2 r1 + rn/4, RFC continuity - Step 3 r1 + r2/4, Insulation resistance - 500V & 1MΩ, Polarity - Correct connection of equipment & accessories, Earth fault loop impedance Ze - Measure impedance of incoming supply, PFC - Check the fault current against the breaking capacity of the protective devices, Earth fault loop impedance Zs - Measure impedance of system, Functional test - Measure disconnection of RCD, Check mechanical operation - Press test button on RCD,

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