[ Nigel wrote in 110704 MMDigest, "I have tied a warning
 [ notice to the motor casing, for those who come after me.
 [ They can have it re-wound!"

Yes, I just knew that someone would point out the obvious.
The motor, when it was installed in 1926, was not earthed.  The
'fault' could easily have been present from manufacture.  No-one
else is going to get their hands on it but me.  So, that's the
way it is staying.  Wish I'd never mentioned it!

Nigel Perry