Functional earth on a RCBO, can it be connected to the DNO earth with a TN-C-S supply.

Functional earth on a RCBO, can it be connected to the DNO earth with a TN-C-S supply.

Functional earth on a RCBO, can it be connected to the DNO earth with a TN-C-S supply.

This started on the screwfix forum, I internet hunt found

Schneider Electric Australia said:
What is the purpose of Functional Earth (FE) on Acti9 iC60 RCBO?
If there is a break in the neutral, the product is supplied by redundancy via the FE (Line to FE supply instead of Line to Neutral), allowing it to continue to perform its protection function.
This configuration allows the behavior of Voltage Dependent (VD) RCDs with FE to be compared with that of Voltage Independent (VI) RCDs.
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by ericmark

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