Safety Switches

Installing RCD Safety Switches in your meter box or switchboard and testing them regularly is a small investment in money and time. It will provide long term protection for you and your family against serious injury and death.

Every day activities such as screwing shelving into a wall or using an electrical appliance can turn deadly without the protection of a RCD Safety Switch. 15 Australians are killed in preventable home electrical accidents each year and around 20 times that number are hospitalised with serious injuries.

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What is a RCD Safety Switch?

Safety Switches or RCD’s (Residual Current Devices)provide a fast power cut- off in problem situations. Electrical hazards are often hidden and can be difficult to identify, such as a small hole in an extension lead or a power board damaged internally. Electrical accidents occur in an instant and RCDs are the only device that can protect you and your family from these hidden dangers and give you a second chance.

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How does an RCD Safety Switch work?

An RCD Safety Switch protects by constantly monitoring the current flowing in the Active and Neutral wires supplying a circuit or an individual item of equipment. Under normal circumstances, the current flowing in the two wires is equal. When an earth leakage occurs due to a fault in the circuit or an accident with the equipment, an imbalance occurs and this is detected by the RCD, which automatically cuts off the power before injury or damage can result.

RCD Safety Switches are extremely sensitive, disconnecting in under 20 milliseconds of detecting a leakage current. This stops the flow of electricity through someone’s body to earth. Importantly, this response time is much faster than the critical section of the cardiac cycle and therefore significantly reduces the risk of death or serious injury. RCDs also protect against fire caused by faults in appliances, tools and wiring. If these faults go undetected they could cause a fire or personal injury.

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Checking if your house has RCD Safety Switches installed

RCD Safety Switches are required by law to be fitted at the origin of the power and lighting circuits which will be at the main meter box or distribution board for the residence. They can be identified by the test button on the front of the device.

Since 2000 it has been compulsory for all new homes to have a minimum of two RCD Safety Switches fitted to protect the power and lighting circuits as part of the electrical installation. However, homes built before 2000 were not required to have two RCDs fitted and from 1992 to 1999 only one RCD was fitted, which will not ensure complete protection for your family. One RCD is likely to protect only the power circuits and leaves the lighting circuits unprotected.

If you are unsure whether you have RCD Safety Switches installed or you need them installed please contact us on 0411700570

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What is the difference between an RCD Safety Switches and a Circuit Breaker?

An RCD Safety Switches looks similar to a Circuit Breaker but it has an additional test button.  Many homes already have circuit breakers installed, however circuit breakers only protect against overloading and short circuits they do not prevent electrocution.

Testing your RCD Safety Switches

To ensure that the RCD Safety Switches fitted to your home perform correctly, they must be tested at regular intervals. AS/NZS 3760 2010 recommends that each RCD be tested every three months or if using a portable RCD a push button test should be performed before each use by the operator.

To test your RCD Safety Switch press the ‘test’ button on the front of the device and then release it. The button will only test the RCD if an electricity supply is connected.

Pressing the test button will simulate an earth leakage fault and indicates whether the device is operating correctly. When an RCD Safety Switch operates all power is lost to the equipment, power point or circuit protected by the RCD. To restore power simply move the “on/off” switch back to the “on” position. Electrical clocks and timing devices may have to be reset.

If your RCD Safety Switch fails to operate contact us on 0411700570

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