Hmmm...a licenced electrician once told me, emphatically, that, no
matter whether the ground on the plug was on the top or bottom, it
didn't affect which side the white and black wires were attached to...


FFS don't ever take up working with gas supplies.....

LOL I understand that a few years ago in London that one of these
college educated "electricians" wired up two of the stars of a 3 phase
supply feeding the lift system to the domestic supply in an 18 storey
block of flats!

Smoke could be seen for miles around!