If we’re are experience NCD when preforming an EICR on a property does this need to be noted on the observations, if so what code should this be given. I’m aware that this needs to be reported to the DNO and should be investigated and rectified.
With the installation isolated as we should expect there was no current
The typical situation is to have extraneous-conductive-parts in parallel with the supply CNE conductor ... so while for the most remote installation current is likely to from through the installation's load to N-PE link and then out via main bonding to supply pipework or shared structural steel, that same current will then find its way back to the star point via the bonding and then the supply CNE of another installation - so in many cases you could see significant currents whether or not loads in your own installation loads are connected or not. In some case (e.g. 3-phase distribution) your loads could well be out of phase with the current being "imported" via your pipework, so increasing your loads could appear to reduce the diverted currents!
