PAT Testing is the testing of any electrical equipment that has detachable plugs or leads. Unsafe appliances contribute to a large percentage of fires. Having them tested regularly will give you peace of mind that your workplace is safe.
Earth resistance test
This test shows the resistance offered by the earthing rods with the connection leads. Various testing instruments are available for earthing resistance tests. The earthing resistance should be less than 1Ω.
Earth continuity test
The equipment shall have a measured resistance of the protective earth circuit, or the earthing conductor of an extension cord or appliance cord set, which does not exceed 1Ω.
Earth continuity test
A leakage current test performed at rated voltage with values not exceeding 5mA for Class I appliances or 1mA for Class II appliances
Leakage test
AS/NZS 3760:2010 section 2.3.3.2 requires a leakage test to be carried out if equipment being tested must be energised to close the circuit or operate a switching device. Leakage testing does require the item being tested to be powered up thus meaning the item will switch on and operate.
Plugs
The order (polarity) of the pins of a three pin flat pin plug, to their connections, shall be Earth (radial pin – green/yellow wire), Neutral (light blue wire) and then Active (brown wire), in a clockwise direction, when viewed from the front of the plug looking at the pins.
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