Brain Teaser (well it is for me!):
Cieling rose; Switched Live To Earth or Neutral = 240V..OK.
1st Neutral Black To Earth = 0V..OK.
Another Black 2nd(Supossed Neutral)Joined to 1st Neutral. When separated from 1st Neutral reads To earth = 240V...?
and to Switched Live (on) 0V.
When joind back to 1st Neutral reads To Switched Live = 240V. and to earth 0V.
Howcome This supposed Neutral carries 240V when separated from other Neutral?
Don't shout at me this for my neighbour!!