RCD and Safety Switch Testing

What is a Residual Current Device (RCD)?  
An RCD is an electrical safety device that helps to prevent electrical injuries and fatalities. When using electrical equipment or power tools, hazards such as damaged leads and cords, faulty wiring and dampness can lead to serious electric shocks or electrocution. An RDC monitors the flow of electricity and is designed to immediately switch the electricity off when electricity 'leaking' to earth is detected at a level harmful to a person using electric equipment.
Sydney Thermal Imaging tests RCD's in accordance with the Australian Standards. By having the RCD’s (Safety Switch) trip time / current tests performed on your premises your company will be fulfilling its obligations under Australian Standard AS/NZS 3760.
Does Every RCD need testing?
Who is Responsible 
Penalties:
 Penalties are varied state by state
RCDs are required by law to be fitted to the power and lighting circuits. They are generally located alongside circuit breakers in the main meter box or distribution board . They can be distinguished from the circuit breakers by the test button.

A minimum of two RCD's are required to ensure some light and power remains if one operates. Two RCD's also reduces the possibility of tripping due to some appliances which have low levels of earth leakage.
The majority of residual current devices (RCD's) or a residual current circuit breakers (RCCB) we test trip (isolate power) at an imbalance of <30 mA (milliamps). Disconnection or tripping of these breakers should happen within 300ms (milliseconds).


Sydney ThermalImaging tests and records the time taken to trip at 30mS. if an RCB/RCCB takes to long to trip the results could be fatal. 
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