EICR Help required from some of you testing experts.

[Des 56]

I'm old enough we had them at college years ago !

My apology if you thought that was meant for you,it was just old folks banter

Too many problems listed to comment on them all
Next issue is on downstairs sockets, tests r1,rn, fine but r2 relationship 2.5/1.5 ratio is way off ! r1 0.44, rn 0.44, r2 16.8 kOhms !! wtf ?
Thinking nasty connection on cpc somewhere anyone seen similar before ripping apart the circuit.

16,800 ohms will likely be open circuit rather than a nasty connection,that reading should be assessed in conjunction with the insulation resistance test on that circuit,it could be a reading of the cpc s of a open circuit with continuity via any appliances and associated copper pipes

 

[Risteard]

IR was a real pain as the meter did not want to know: @500V L-E max was 1.01 Meg
N-E was 0.36 Meg !
But sure every single thing was unplugged.
Also when tested at 250V the readings all came out approx 25 Meg ! ??

Surge protection?

 

[westward10]

If an IR test at 250v gives a satisfactory result this often indicates a filtering device in circuit, not always but most of the time.

 

[Soulsurfer]

If an IR test at 250v gives a satisfactory result this often indicates a filtering device in circuit, not always but most of the time.

Ah cheers, not brilliant 25 M but better, just need the 500V to comply though. Wonder what items may be hidden somewhere !

 

[Soulsurfer]

Surge protection?

Not a clue but don't think so chief.

 

[Soulsurfer]

My apology if you thought that was meant for you,it was just old folks banter

Too many problems listed to comment on them all
Next issue is on downstairs sockets, tests r1,rn, fine but r2 relationship 2.5/1.5 ratio is way off ! r1 0.44, rn 0.44, r2 16.8 kOhms !! wtf ?
Thinking nasty connection on cpc somewhere anyone seen similar before ripping apart the circuit.

16,800 ohms will likely be open circuit rather than a nasty connection,that reading should be assessed in conjunction with the insulation resistance test on that circuit,it could be a reading of the cpc s of a open circuit with continuity via any appliances and associated copper pipes

No apologies needed, just unfortunately old enough to remember having those put across my ear lobes in my first year when the 16th came out & of course returning the favour a lot !

 

[westward10]

If there is a genuine IR fault it will be indicated with a 250v test so I would be tempted to accept the value under this test. Rcd sockets can give false readings due to their inherent connection to earth but it is rare for a 250v test to eliminate this.

 

[Soulsurfer]

If there is a genuine IR fault it will be indicated with a 250v test so I would be tempted to accept the value under this test. Rcd sockets can give false readings due to their inherent connection to earth but it is rare for a 250v test to eliminate this.

Thanks, I'll maybe just note it on the report. Not there to sort the faults at present so.

 

[westward10]

The only time I may investigate a fault is with an IR reading on a circuit with socket outlets and only if a 250v test does not clear it.

 

[Pete E]

Ah cheers, not brilliant 25 M but better, just need the 500V to comply though. Wonder what items may be hidden somewhere !

Any socket outlets with built in USB charging ports?

 

[Soulsurfer]

Any socket outlets with built in USB charging ports?

Not found any.

 

[Wilko]

Any socket outlets with built in USB charging ports?

And perhaps same with the wifi extenders now available in outlets. I'm guessing none of these respond well to IR testing .

 

[Soulsurfer]

Just in case I just bought a Megger MIT 330 on a great deal on evilbay as a stand alone tester too for every eventuality ! It was Westwards fault making me buy new toys ! Although did a load of testing today and the MFT was faultless on all tests so likely just a really bad install again.