Extract from AS/NZS 3019:2007
2.3 Verification Requirements
(a) Confirm that the installation is not damaged or has not deteriorated so as to impair electrical safety.
3.2 Inspection Requirements
(a) Cables show no undue evidence of insulation or sheath deterioration and have appropriate mechanical protection for the environment in which they are installed;
(f) Switchboard and Electrical equipment have no conductor insulation deterioration;
(l) (Extract) Entry points into buildings have no evidence of insulation deterioration.