1. General appraisal of the installation by a competent person to assess the physical condition of the installation and its suitability for environment.
2. Continuity of the protective conductors and of the main supplementary equipotential bonding.
3. Continuity of conductors in ring final circuits.
4. Resistance of protective conductor.
5. Insulation resistance of the electrical installation.
6. Polarity.
7. Fault loop impedance test.