help centre‎ > ‎


A Residual Current Device (RCD)

An RCD can help reduce the likelihood of electrical injury but a shock can still cause very serious or fatal injuries, so an RCD should only be used as a secondary means of reducing the risk of people being injured by electricity.

Where is my RCD?
RCD’s are most commonly found built into the main switchboard, however where this is not possible, an electrical socket outlet with an RCD, or a plug in RCD adaptor, may be being used.

Looking after an RCD
RCD’s are very low maintenance but do require testing, by the user, prior to use and periodicaly by operating the ‘Test’ or ‘T’ button. Faulty RCD’s should not be used and either replaced or decommissioned. We recommend testing to every 6 months by a competent person and a Periodic Inspection by an Electrician to ensure the tripping current is no more than 30 milliamps (mA).

What does an RCD do?
An RCD detects faults (not all) in the electrical system and disconnects the supply quickly, reducing the potential for injury caused by a common type of electric shock.