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Residual Current Device testing (RCD testing) also known as safety switches, is the process of "tripping" the RCD safely, to ensure it responds quickly in the event of an electrical incident. It is designed to trip (turn off) when current leakage is detected. These safety switches are installed to protect users from problems such as:

  • Faulty appliances,
  • Water in electrical fittings, and
  • Rodent damage to cables.

Two Types of RCD

RCD switches are required by AS/NZS 3760:2010 to be regularly inspected to ensure rapid response to any issues within a specified time frame. This is of crucial importance as a faulty RCD device can lead to severe electrical shock or fatality. There are two different types of testing for RCD devices and these two types must be carried out.

  • The first can be done by the user/operator of the equipment, providing they are deemed competent, and is called the push-button test.
  • The second test is the trip time test, this testing must be conducted by a licensed electrician using a technical precision testing instrument that will record the time taken for the RCD to activate in milliseconds.

The regularity of these tests will depend upon the nature of your business, the equipment in use and where they are used.  Outlined below is the timing requirements contained within AS/NZS 3760:2010.  

RCD testing

RCD Report

Thermal Scanners will provide help in understanding the requirements of the legislated RCD testing.  As part of the service Thermal Scanners will provide a detailed RCD report which includes:

  • Detailed scope of works,
  • Every RCD’s:
    • Location,
    • Class,
    • Trip time results (with failures identified),
    • Date, and
    • Further comments.
  • Qualification of electrician, and
  • Certificate of Testing and Compliance.

Protect your assets today! If you’re looking for the following:


Fast and effective way to prevent costly electrical repairs


Ensure the safety of your facilities, employees and the general public


Ensure the highest level of performance for all electrical systems


Reduce the risk of breakdowns, critical faults and downtime

Call us at Thermal Scanners today to book your thermal inspection or for a free no-obligation quote - 1300 309 562

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