Inspecting and testing equipment
Specified electrical equipment and safety switches need to be tested at intervals according to their class of work. For construction work this information is in AS/NZS 3012 Electrical installations - Construction and demolition sites (non-Queensland Government link).
For manufacturing, service, office, amusement and rural industry work, the information is contained in the Electrical Safety Regulation 2002 (PDF, 1 MB).
Electrical equipment and tools testing and tagging
Specified electrical equipment and safety switches need to be tested at intervals according to their class of work.
Testing is live work
Always consider parts are live until you can prove otherwise.