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Advice for Problem Solving RCD controlled Circuits 

Light Bulb Picture

If the RCD Keeps Tripping:

RCD with Circuit Breakers Downstream




The method above will generally work, but if in doubt, please consult your licensed electrician.


RCD Tips:

  • RCDs are a safety device, these will only trip if a leakage is detected, they are NOT a guarantee of protection from electric shock.  ALL normal safety precautions should still be done, ie do not use damaged cords, keep away from moisture etc.
  • RCDs are not failsafe, like any electronic device, a RCD can fail.
  • Test regularly, especially the portable RCD should be tested using the test button each time before use.
  • A RCD will not provide a good level of safety if the wiring is incorrect eg a missing earth, incorrect polarity etc.