However there may well be situations where there's a live conductor
whose field is shielded by a grounded conductor: I suppose a
hypothetical example would be coax with mains on the centre & ground on
the braid. (I'm sure you'd never find anything like that in the real
world, of course :-)


Err What about MICC? I have seen the aftermath of a burgular alarm installer
who checked with his volt stick, then put in his cable clips, tap tap tap
BANG !