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Everything You Should Know About RCD Testing

If you’ve been wondering about the importance of RCD testing, then you’ve come to the right place. This article will discuss how often your RCDs need to be tested, how to carry out maintenance on your electrical equipment, and who should perform the tests. If you have questions about RCD testing, don’t hesitate to get in touch with us. We’d be happy to help!


When it comes to RCD Testing, you’ll find several factors you should know. Usually, tests are performed on the load side of an RCD, which means that the load should be disconnected. An RCD testing instrument uses a few milliamps to operate, but the phase and neutral circuits under Test should be connected to the earth. However, you must remember that the instrument’s supply current can increase the test current, resulting in an incorrect operating time.

What is an RCD? An RCD is a safety device that monitors the current flowing through a circuit. It switches off the entire circuit if it detects an errant current. This prevents an electric shock and saves lives. There are two basic types of RCDs: residual current devices and arc-fault-protective devices. RCDs are used in all applications, including electrical appliances, buildings, and homes.


Electrical safety should be your top priority if you’re about to build a new home. Undiagnosed power failures can have catastrophic consequences, and the right residual current devices (RCDs) can ensure your electrical safety. In this article, we’ll take a closer look at these life-saving devices and how to maintain them. Here’s what you need to know about RCD testing and maintenance. This article was written with you in mind.

A Residual Current Device (RCD) is a safety device that can prevent electrocution and fire caused by an earth fault. A live wire can be exposed by mowing the lawn, and a faulty appliance can cause electricity to flow to the earth. During this time, a Residual Current Device will interrupt the flow of electricity within ten to thirty milliseconds, preventing both harm and fire.

Maintenance frequency

For safety in the workplace, the frequency of RCD/RCBO testing must be met. These devices must be tested by push button or timed Tests at specified intervals in many situations. All tests must be documented and records maintained. RCDs, also called safety switches, protect against electrical shock and fire caused by an earth fault. When an RCD senses a fault, it will interrupt the flow of electricity within ten to thirty milliseconds.

In dry hire situations, testing must be conducted on equipment once every twelve months or every time it is used. To ensure safety, it is necessary to check the polarity of the conductors and pass 40 to 50 percent of the rated tripping current over five seconds. The RCD should trip within the prescribed timeframe. Performing an RCD test in an open area is risky unless a spotter is present.

A qualified electrician carries out tests.

A qualified electrician will conduct RCD testing for you and all electrical equipment in your building. Performing these tests is mandatory, as they ensure that the RCDs work correctly and are not damaged by a fault condition. Testing will be carried out according to the Work Cover Code of Practice. In some cases, this may reduce the need for Test & Tag of portable electrical equipment.

A test is performed when the RCD fails to detect the fault, usually an electrical fault. A fault may result in an electric current flowing through a live wire, causing fire and electrocution. To prevent such an accident, an RCD will cut off the flow of electricity within ten to thirty milliseconds. An RCD must also be tested for its rated residual operating current, less than 30 mA.

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