Low earth resistance continuity test

[billy]

I’ve just carried out a continuity test on a rfc. And I’m getting a lower earth resistance Reading than the reading on both the live and neutral wires.
its a circuit in a house converted into two flats and the circuit is wired in 2.5/1.5 twin and earth.

Live and neutral are both 0.46
earth is 0.37, obviously I expect earth to be 1.67x higher not lower.

Ive opened up every socket and all looks fine, I’ve also done continuity with Live and neutral and live and earth connected, and the figures for these are spot on at every socket. (From the terminals)

All the wires are out of the cu, and there’s not a boiler connected to the rfc. It’s all normal twin and earth into metal back boxes there’s no metal conduit etc

The ze for the circuit is fine.

I assume it must be a parallel earth some where but no idea where or how, anyone got any ideas because I’m at a loss and I hate things not being right lol.

I assume as everything else is okay I just need to accept the lower reading.

 

[billy]

Could be a loose connection at one of the sso???

A bad connection would surly give a higher reading not lower. R1 and r2 are exactly the same they both can’t have a equally bad connection to give higher readings!!’

 

[PEG]

Hi,if you had one hidden accessory or JB,which bridges the ring somewhere,and it had a poor connection on the cpc,you could get this....

You could clip a signal generator on the disconnected cpc,and CAT the whole gaff,to see if there are unexpected cable runs....

Now and again,in circumstances like this,i find that not worrying or thinking about it,works wonders

 

[billy]

Hi,if you had one hidden accessory or JB,which bridges the ring somewhere,and it had a poor connection on the cpc,you could get this....

You could clip a signal generator on the disconnected cpc,and CAT the whole gaff,to see if there are unexpected cable runs....

Now and again,in circumstances like this,i find that not worrying or thinking about it,works wonders

To be honest that’s kind of where I’m at now lol. At the end of the day it’s not a safety issue.

 

[Petej999]

Could be a loose connection at one of the sso???

A bad connection would surly give a higher reading not lower. R1 and r2 are exactly the same they both can’t have a equally bad connection to give higher readings!!’

Yes I realised that after I posted sorry my bad