>  I can not assume that we are on an equivalent
>  of an MENS system and also can not assume that
>  it will be wired correctly ...
>  The books are published in the UK, and I am not sure
>  if the neutral is tied to ground,

Yikes!

Just imagine what the effects  could be if
a *small* amount of AC leakage current were
to occur from the HV power distribution
transformer's primary to the secondary
winding if there were not a 'neutral'
connection ...

(And not to mention the effects that strong,
charged thunderclouds have on non-one-side-
grounded secondary distribution lines ...)

This leakage current could easily cause both
sides of the line (termed "common mode") to
reach voltages of, well, what ever the
secondary was ...

I think experience with (and accidents with) power
distribution systems over the years has lead to
one-side-grounded power distribution practices
all over the world (funny how physics reveals flaws
in man's 'systems' like this sometimes - regardless
of location!) ...

RF Jim

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