MCB tripped due to minor roof leak causing water to dribble down thru roof felt and onto external aspect of plasterboard in attic conversion. Water came into contact with back of double socket. Isolated system and disconnnected 2.5mm T&E supplying socket. Double socket appears on ring main supplying attic conversion as they were 2 leads. I have connected up 2 loose ends into 30A junction box to make safe, whilst roof leak fixed.
Meantime used simple socket tester to test double sockets around room and opened number of sockets to check wiring. Hollow fast fix type plastic mounts with no flybacks needed are in use. 3 double sockets in one corner appear to have no earth according to socket tester, whilst most do. On the opposite corner there appears to be one double socket with no earth. Most appear to be on the ring with one on an apparent "spur".
I don't have equipment or knowledge to start testing earth loop impedence, etc.. I'm not certain how this could have happened. Could it relate to the roof leak have caused some burning in the wires at the original double socket.
Your advice would be welcome before I call out a spark.
Thanks
Meantime used simple socket tester to test double sockets around room and opened number of sockets to check wiring. Hollow fast fix type plastic mounts with no flybacks needed are in use. 3 double sockets in one corner appear to have no earth according to socket tester, whilst most do. On the opposite corner there appears to be one double socket with no earth. Most appear to be on the ring with one on an apparent "spur".
I don't have equipment or knowledge to start testing earth loop impedence, etc.. I'm not certain how this could have happened. Could it relate to the roof leak have caused some burning in the wires at the original double socket.
Your advice would be welcome before I call out a spark.
Thanks