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New EICR - "No earth bond to some socket boxes: C2"?

Former Community Member
Former Community Member
I have a new EICR which has the observation "No earth bond to some socket boxes: C2".


I have checked continuity between all faceplate mounting screws and the earth of the socket. They are all connected, i.e. the back box is at least earthed by the screw if not with a tail internally (I have not removed the front plates of any sockets). The earth of each socket is connected to the ring.


While it is best practice, is it a requirement of the regulations that a tail is connected internally?


many thanks



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  • 0
    To put the 1.0 mm CPC in a 2.5 mm twin and earth socket ring circuit into perspective, the 30 amp circuit may be protected by a 0.85 mm fuse wire.


    So worst case scenario is a spur wired into socket ring close to the fuse board with a high PSC. The maximum PSC for a rewirable fuse board is 1 kA.


    If you are doing testing for an EICR and you find a rewirable fuse board, a high PSC and 2.5 mm twin and earth with 1.0 mm all sorts of potential issues should be flagged up, because the earth conductor is only 0.15 mm bigger than the fuse wire.


    Andy Betteridge
Reply
  • 0
    To put the 1.0 mm CPC in a 2.5 mm twin and earth socket ring circuit into perspective, the 30 amp circuit may be protected by a 0.85 mm fuse wire.


    So worst case scenario is a spur wired into socket ring close to the fuse board with a high PSC. The maximum PSC for a rewirable fuse board is 1 kA.


    If you are doing testing for an EICR and you find a rewirable fuse board, a high PSC and 2.5 mm twin and earth with 1.0 mm all sorts of potential issues should be flagged up, because the earth conductor is only 0.15 mm bigger than the fuse wire.


    Andy Betteridge
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