On 31/01/2019 21:32, sm_jamieson wrote:
On Tuesday, 29 January 2019 09:59:50 UTC, wrote:
I always thought that putting lots of earth wires into a single screw terminal in a cu was bad practice.

If a screw works loose, you could potentially lose several earth connections in one go.

In the case of the functional earths, that means quite a few rcbos will then trip upon loss of functional earth.

I believe that the functional earth of a RCBO there is so that it will
still work if the neutral is lost. I do not believe that the loss of an
earth will cause the RCBO to trip.

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Adam