Electrical Regulatory Framework
The Australian electrical regulatory system is layered, and exam questions test whether you know which layer does what. At the top, the National Electricity Law and the Australian Energy Market Commission set market rules; Safe Work Australia and WHS law govern worker safety; but the technical rulebook for installations is AS/NZS 3000 (the Wiring Rules), given legal force by state and territory legislation (e.g. electricity safety acts and regulations) and administered by the local regulator (Energy Safe Victoria, SafeWork NSW, Building and Energy WA, and so on).
Know the difference between a standard (technical consensus document) and regulation (legally enforceable). AS/NZS 3000 is not law in itself; it becomes mandatory because regulations call it up, often with variations. Service and installation rules published by network operators add another layer covering connection, metering and point of supply.
Traps to watch: questions that attribute enforcement to Standards Australia (it writes, it does not enforce); assuming rules are uniform nationally (state variations and editions matter); confusing the point of supply with the point of attachment or the main switchboard; and mixing up the roles of the regulator, the network distributor and the electrical contractor.
Worked example: A candidate is asked who can legally require rectification of non-compliant consumer mains. The answer is the state regulator under its electricity safety legislation, using AS/NZS 3000 as the technical benchmark - not Standards Australia and not the distributor, though the distributor may refuse connection until compliance is demonstrated.