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Undersized Main Earth Conductor

Former Community Member
Former Community Member
Hi Folks,

I was carrying out an EICR on a domestic property with a PME supply.

The Main earth conductor is 10mm, the water and gas bonding is also 10mm connected to the earth terminal in the consumer unit.

Would you give this a C3 or C2?


I know there's an equation knocking about for checking main earth conductors however, I'm under the impression that this only works if the bonding conductors are terminated at the MET and not the consumer unit.


Any suggestions will be welcome.


Thanks
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    I know there's an equation knocking about for checking main earth conductors however, I'm under the impression that this only works if the bonding conductors are terminated at the MET and not the consumer unit.


     


    I do not think that that is correct. Most new consumer units have terminals marked for bonding conductors and normally the main earthing terminal supplied at the cut out is not far away, so the consumer unit earthing bar can be considered as the main earthing terminal.


    Z.


Reply
  • 0



    I know there's an equation knocking about for checking main earth conductors however, I'm under the impression that this only works if the bonding conductors are terminated at the MET and not the consumer unit.


     


    I do not think that that is correct. Most new consumer units have terminals marked for bonding conductors and normally the main earthing terminal supplied at the cut out is not far away, so the consumer unit earthing bar can be considered as the main earthing terminal.


    Z.


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