Hi all. I've just completed my first re-wire and everything is fine with the testing with one exception. When I measured Ze I got a value of 0.01 ohms. The distributor changed the supply over to PME and the means of earthing is TN-C-S. The problem is a value of Ze of 0.01 ohms equates to a PSSC of 23KA!! PEFC is 2.7KA. Can anyone help me work out what's going on? All the rest of the testing results where normal but this one is confusing me. I doubt I'm going to find breakers that can take 23KA and still work afterwards..