Jerry Friedman <
jerry.fr...@gmail.com> wrote:
> On Tuesday, January 9, 2024 at 2:43:24?PM UTC-7, J. J. Lodder wrote:
> > Paul Carmichael <
wibble...@gmail.com> wrote:
> >
> > > El Tue, 09 Jan 2024 18:27:58 +0100, Athel Cornish-Bowden escribió:
> > >
> > > > When we moved into a university flat in Birmingham we bought quite a few
> > > > items from the previous tenants, including a washing machine. I had
> > > > occasion to check the fuse in the plug, and was utterly appalled to see
> > > > which wire was connected to which terminal. (I can't tell you exactly,
> > > > because I don't remember exactly, after 40 years: I think the earth
> > > > (yellow-green) was connected to the live, the live (brown) to the
> > > > neutral, and the neutral (blue) to the earth)). I was surprised that it
> > > > worked at all, let alone safely.
> > >
> > >
> > > Single phase stuff really is not fussy.
> > >
> > > For one thing, live is exactly the same as neutral. Just opposite sides
> > > of the sine wave. Neutral is normally connected to earth at some point.
> > > For example in my house, the inverter connects neutral to earth so that
> > > the following earth-trips work correctly. I think in the UK and some
> > > other countries the house gets "mains earth" as well. We have to provide
> > > our own.
> >
> > You are wrong about that.
> > (special cases with symmetrical nets excepted, not your case)
> >
> > Just try touching a bare wire,
> > and you will know whether it is neutral or live.
>
> I don't know much about electricity in the sense of what electricians do,
> but I assumed Paul was talking about the situation where current is
> flowing.
I don't know what he is talking about, beyond his being confused.
At the output of a transformer two wires come out,
and they are equivalent, as long as both are free.
Then you ground one of those wires,
and all of a sudden one of them is null,
and the other is phase.
More common: there will be six of them, three will be grounded together,
resulting in one null/neutral and three phases.
> > > I remember hearing some "UK-trained electrician" telling me that some
> > > single phase stuff is "phase dependent" which is absolute bollocks.
> >
> > It is, in the British system.
> > For example, it is the live wire that must be fused,
> > not the neutral one.
> > The live wire in a British socket must be on the right side.
> ...
>
> I wouldn't use "phase-dependent" to mean the difference between the live
> and the neutral wire.
I wouldn't either, but 'phase' is used with many meanings.
In some cases 'phase' 'line' 'live' 'hot'
are all used with the same meaning.
Standard on European plugs is L and N, without attaching a word to it.
(natural interpretations in many European languages fit)
Jan