The standard created by Standards Australia is AS/NZS 3760 which outlines a testing method and frequency for electrical appliances. It was created to minimize electrical hazards in the workplace. Appliances are inspected for damage, and various measurements are made to the appliances' earth continuity, insulation, polarity, and physical condition. After testing has determined a pass, a tag is attached to the appliance lead indicating when it was tested, when the next test is due, and a tracking code. Retesting intervals of equipment can vary from 3 months to 5 years depending of the environment where the equipment is located.
This standard is used in both Australia and New Zealand. Colloquially, the standard is often referred to as Test and Tag. Testing is allowed to be done by anyone deemed competent by training or experience and does not require to be a Registered Electrician.