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I thought I had a borrowed neutral because i disconnected the ground floor lgts neutral and gf floor lgts when still on. But when i took the neutral out of the upstairs, the gf lgts stopped working. So the next day I traced the cct, belled it out and 'meggered' gf neutral with ff neutral...

ive put the gf lgts into a rcbo they have not tripped so i think neutrals are seperate !!

Just changed a db at my house, I am unsure if i have a borrowed neutral between the 1st floor and gf lgts. Am I right in saying if I Insulation test between the neutrals and lives of the two ccts (neutral to neutral, live to live ), this will prove it either way. I have done the trick...

thanks 333rocky333

ok, why did they do that in the 70's?, because of the copper shortage?

Can I see some aluminium conductors in one of those pics?

howdens have good offers

call 2 cant be much of a sparky if he checks sockets when the lights have gone upstairs!!!!