Weird Earth Continuity on Ring Main

[1john]

That still has no use if it were possible. The steel butied in the ground makes no sense as to why the cpc continuity is lower than the line or neutral either :S

 

[EFLImpudence]

That still has no use if it were possible

No. I was just pointing out that if the meter could do it the result would be the same.

 

[JohnW2]

The steel butied in the ground makes no sense as to why the cpc continuity is lower than the line or neutral either :S

That occurred to me when I first read it, but then I got sidetracked by this IR test nonsense and forgot to discuss it ...

The buried steel could only be an explanation for the low CPC ring resisistance if there were a a second connection (maybe in the name of bonding) from the steel to a different point on the CPC ring, thereby partially bridging that ring. It sounds as if this steel structure represents an extraneous-conductive-part which should have main bonding to the MET. If it does, I wonder whether the op maybe left one end of the CPC ring attached to the earth bar when he did his tests? Alternatively, maybe the steel is bonded directly or indirectly to a point on the CPC ring which is distant from where FCU occurs in the ring.

Kind Regards, John.