Very high Zs reading

[telectrix]

wouldn't like to see the state of a 1.5mm cpc after 24KA been up it , even for a fraction of a second.

 

[Deleted member 26818]

Try doing the adiabatic with that figure.

 

[telectrix]

Try doing the adiabatic with that figure.

66mm2??

 

[Edd]

I had a Fluke 1652 giving me readings like that once, sent it off to be calibrated all came back ok, but it still gave random readings, its now in the stores! Test at a socket then at the mcb for that circuit (not at main switch as the RCD needs to be taken into account). then at the main switch. Tell us what readings you get

 

[Guitarist]

I don't think some of my posts are being sent. I have tried my three probes at my socket terminals and am getting 0.01ohms with a PEFC of 24Ka. So I think the problem is solved.
Just one more thing; I had a RCD main swith ch trip on me whilst carrying out Zs test the other day. I need to go back and sort it ( It's an empty house) What could be causing the RCD main switch to trip? I was using my plug adapter again>
Many thanks.

I would say that the problem here is far from solved. Firstly, I don't believe that figure for a second, so something wrong with either testing or meter. Secondly, do you know what a standard switch/MCB is rated at? Certainly not 24KA!!!

 

[SKY]

24KA - jesus - I never really see more than 2KA around my next of the woods.
Seen 5.9KA in London which if I recall is the highest I have seen.
Are you local to Essex? if so you can borrow my spare calibrated meter if you like.