"mick"
Phil Allison wrote:

FYI:

Supply earth goes direct to one side of the amp's AC tranny, then comes
the iso-tranny's 240V winding and back to the amp's chassis. The amp
will not run - but the chassis is 240AC live relative to earth.

You're looking at an equipment plug being plugged into a fixed ISO tranny
that's plugged into a correctly wired mains socket? Ah... I was looking
at the tranny primary-side plug being wrongly connected, sorry. Yep,
the chassis is connected to mains earth via the isolated supply and the
amp's supply tranny in series.

** Correct - the result is 100% lethal.

Yet *another* good reason NOT to use an iso tranny on a repair work bench
as the regular AC supply.



..... Phil