Doctor Drivel wrote:

"Andrew Gabriel" wrote in message
...
In article ews.net,
"Doctor Drivel" writes:
1. If there is an over-current fault on the circuit it will operate the
overcurrent detection part of the device, which will trip the RCBO.

2. If there is an earth fault on the circuit it will operate the earth
fault part of the device. This will also trip the RCBO.

The above two points are mutually exclusive.

They aren't mutually exclusive,

They are. One is not dependent on the other.

Then they cannot be mutually exclusive. Jings but you're dim.