Just because someone is a registered and licensed electrical worker, it does not mean he or she can do any type of electrical work.
There are 10 classes of registration for electrical workers and each class is limited to a specific type of work:
Work ranges from wiring up domestic houses to maintaining equipment in a large industrial plant.
Work includes servicing commercial refrigeration units and maintaining 3-phase electrical equipment.
Work ranges from repairing household appliances to maintaining gaming machines.
Work ranges from installing high voltage transmission lines to repairing overhead or underground power lines including restoring power after storms.
Work ranges from installing security systems to installing air-conditioning units or renewable energy systems.
Work involves installing and joining high-voltage power lines.
Work ranges from designing the electrical wiring of a building to doing the work of an electrician.
Work ranges from inspecting the work done by electricians to doing the work of an electrician.
Work ranges from installing water heaters to servicing waste disposal units.