J
jed,da,sparx
hi guys new to the site
got a problem with a circuit at a property im working on
description
council kitchen circuits rewire
db- 10way main switch rcbos previously installed
problem - 1 x lighting circuit on mcb due to it tripping the rcbo ( last electricians left the rcbo in ccu cupboard, as they couldn't work out issue and left it on mcb )
at first i thought the issue was a borrowed neutral from the other lighting circuit ( because when i removed the neutral from the neutral bar the lights were still on ( i know working live, slap my wrists )
then i turn the power off and checked continuity across the circuits neutral and other neutrals in db -
no continuity
this has led me to believe that the circuit is using the cpc for path back for live
i checked earth to neutral continuity on that circuit and it belled out
i then check it across all earths in d.b ( disconnected ) am im getting continuity between them all even when disconnected from met (e.g new cooker circuit cpc and main earth both not connected in met + even belling out on gas pipe)
im was think someone has screwed through a cable and its touching it all together , but this would be the most unlucky fixing ever made or luckiest as it hasn't hit the lives
anyway hope i have given enough detail on this and maybe someone else has come across an issue like this , coz i am completly stumpped
got a problem with a circuit at a property im working on
description
council kitchen circuits rewire
db- 10way main switch rcbos previously installed
problem - 1 x lighting circuit on mcb due to it tripping the rcbo ( last electricians left the rcbo in ccu cupboard, as they couldn't work out issue and left it on mcb )
at first i thought the issue was a borrowed neutral from the other lighting circuit ( because when i removed the neutral from the neutral bar the lights were still on ( i know working live, slap my wrists )
then i turn the power off and checked continuity across the circuits neutral and other neutrals in db -
no continuity
this has led me to believe that the circuit is using the cpc for path back for live
i checked earth to neutral continuity on that circuit and it belled out
i then check it across all earths in d.b ( disconnected ) am im getting continuity between them all even when disconnected from met (e.g new cooker circuit cpc and main earth both not connected in met + even belling out on gas pipe)
im was think someone has screwed through a cable and its touching it all together , but this would be the most unlucky fixing ever made or luckiest as it hasn't hit the lives
anyway hope i have given enough detail on this and maybe someone else has come across an issue like this , coz i am completly stumpped