On Sat, Feb 23, 2019 at 08:50:08PM +0000, mick crane wrote: > On 2019-02-23 17:03, tomas@tuxteam.de wrote: [...] > I'm not very good at electricity. As I've had it explained the > neutral is driven into the ground at the generating station. > The Earth/ground circuit is supposed to be driven into the ground at > your house, it's purpose to allow enough electrons to flow to trip > the RCB/fuse in case there is a short in the local device/wiring and > also a break in the neutral transmission line between you and the > generating station. More or less: what the RCB (residual-current breaker) does is to sense a difference in current flowing between the phase (aka "hot") and the neutral conductor. If there's a difference, there must be some current flowing to ground (possibly through you, but hopefully through the ground conductor) -- that means there is a path to ground (not necessarily a short, though). Then the RCB trips. But this is becoming somewhat... OT I guess :) Cheers -- t
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