RCD Keeps Tripping Test Sequence

Ask what was running when the trip happened, whether it happens immediately on reset, and whether weather, heating, or one item of equipment seems to trigger it. Those simple questions often cut the fault tree in half before you touch the board.

1. Confirm the symptom and note when the trip occurs.
2. Switch off or disconnect downstream circuits so you can reintroduce them in a controlled order.
3. Reset the RCD with the downstream side cleared to see whether the problem is board-side or circuit-side.
4. Re-energise circuits one at a time and watch for the trip to return.
5. Once the faulted circuit is identified, inspect accessories, loads, and recent alterations before deeper testing.
6. Carry out the dead tests that fit the suspected fault, then live test only where it is justified and safe.
7. Retest after the repair and record the final outcome clearly.

If the issue turns out to be cumulative leakage rather than one clear defect, the next step may be better circuit separation or a move toward individual protection rather than repeated call-backs for the same bank.

The final step is not just restoring power. Record the cause, the repair, the final test result, and any remaining recommendation. If the client needs a wider solution such as a board upgrade, say so clearly instead of pretending the immediate repair solved the whole installation.

Use this alongside the wider RCD causes and fixes page and the digital certificate flow when the fault ties into formal reporting.