TN-C-S (PNB) versus TN-C-S (PME).

How good are you at telling the difference?

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  • Two different DNO intakes, both are the only connections to a transformer and both have a DNO earth electrode at the intake with the DNO earth electrode conductor cable tied to the DNO supply cable, but one has an internal earth electrode connection and the other has an external connection.

    From looking at them, how would you tell the difference between these, if there is a difference?

    Also, how would you tell the difference between these and the picture of the TT earth installed by a DNO that I posted a picture of earlier in the discussion?

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