Turn off and unplug all items and appliances on the affected circuit. Retest the safety switch.
If the safety switch remains on, the cause of the fault is likely an appliance. You can plug in essential appliances such as your refrigerator one at a time if required, this can assist in narrowing down the cause of the fault.
If you cannot narrow down the cause to one appliance, contact MC Electrical & Communications to test potential faulty items.
If the safety switch flicks off again, the fault could be elsewhere in the house or caused by faulty or compromised wiring.
Contact MC Electrical & Communications on 1300 993 566 to have the faulty circuit repaired.