Can a earth fault on a lighting circuit effect another circuit , this being ring main , only two circuits in flat, After changing a light fitting i came across an earth fault on the lighting circuit , I thought i had sorted earth fault out but the other circuit in the flat started tripping , when the lighting circuit cpc is removed from earth bar , nothing trips both circuits power up. With lighting cpc in earth bar ring main trips, not on rcbos.
Its a 32amp mcb thats tripping and a 40 amp rcbo which is in the main board , I was working on a lighting circuit but this has somehow caused the ring main 32 amp mcb which is in the flats cu to start tripping and also the 40 amp rcbo which is in the main board . Its a flat with its own cu which is fed from a main board .
Hi Thomas Ward, it would be a great help if you could post any pictures?
Its a 32amp mcb thats tripping and a 40 amp rcbo which is in the main board , I was working on a lighting circuit but this has somehow caused the ring main 32 amp mcb which is in the flats cu to start tripping and also the 40 amp rcbo which is in the main board . Its a flat with its own cu which is fed from a main board .
Hi Thomas Ward, it would be a great help if you could post any pictures?
