Continuity between neutral and earth
David wrote:
This looks to be another advantage of RCBOs
Isolating both live and neutral can have advantages when you want to keep
most of the house powered up when you work on one circuit.
Except most RCBOs only break the live pole, the neutral passes through
them, but only for sensing, there are double pole RCBOs but you'd have
to go hunting for them
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