> > Also you schould _not_ connect your 'ground' (which is in fact a phase)
> > at the outlet to Protective Ground ('Short Grounding') but rather use
> > your real PG.
> Why not? In the UK, it's very common (required?) for almost all metalwork
> (water pipes, etc) to be bonded to the mains electrical earth as well.
> You mustn't connect neutral to earth at any point (except as part of a
> PME installation), though.
Jep, same here, but I was refering to his US installation to get 230 V
> > Second is about the 220 between two phases: in the US is, AFAIK, 115V is the
> > standard voltage (with an upper limit of 120) which comes to 200V (208V),
> > and not 220 - and 200 is definitive to low to drive 230V (240V) equippment.
> > Not even the old standard 220V Eq will run properly in all cases.
> No. The US mains is 234V centre-tapped. It's not part of a 3-phase system
> (at least not normally) - the 2 live wires are 180 degrees out of phase.
> So you do get 234V by connecting to the 2 hot wires.
Realy 234V (strange) and 180 degree ? Where do you know ? By definition ?
Just remember, if you tap between 2 phases of a 3~ signal you still get
a perfect sinus and you can't decide if it is a single phase or part of
a 3 phase signal. Ok, I'm always learning new things on this earth :9
The numbers just saemed to fit well.
Gruss
H.
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HRK
Received on Tue Apr 20 1999 - 16:15:14 BST