- Reaction score
- 3,010
Got an odd one.
Supply is TPN TN-CS and all looks reasonably tidy but the circuit schedules bear little resemblance to the DB contents.
I have a piece of fixed equipment that is generating intermittent faults and tripping the C16 RCBO. The circuit tests fine at 999MOhms at 500V on IR. So it's looking like the fixed equipment or it's associated wiring.
The curious thing is that they are claiming that when it trips it takes down the adjacent B32 RCBO.
I have ramp and RCD tested the C16 20 times and not got the B32 to trip.
The wiring in the board is untidy but all is secure and correctly wired.
My theory is that when restting the faulty C16 they are hitting the test button of the B32.
But thought I'd ask if there were any exotic scenarios where one circuit fault can cause another to trip?
Supply is TPN TN-CS and all looks reasonably tidy but the circuit schedules bear little resemblance to the DB contents.
I have a piece of fixed equipment that is generating intermittent faults and tripping the C16 RCBO. The circuit tests fine at 999MOhms at 500V on IR. So it's looking like the fixed equipment or it's associated wiring.
The curious thing is that they are claiming that when it trips it takes down the adjacent B32 RCBO.
I have ramp and RCD tested the C16 20 times and not got the B32 to trip.
The wiring in the board is untidy but all is secure and correctly wired.
My theory is that when restting the faulty C16 they are hitting the test button of the B32.
But thought I'd ask if there were any exotic scenarios where one circuit fault can cause another to trip?