First eicr and low iR readings

[multimick]

in my humble experience, takeaways and rodents go hand in hand.

 

[Highresdis]

I'm sure you know that such a low reading is a definite C2, therefore an unsatisfactory outcome on the EICR. Best way to find it is to split ring into sections, and narrow down the location. I recently had a similar result caused by damp affecting several newish sockets and fcus on one particular wall.

 

[Wilko]

Hi - the heating system (with its pumps and motorised valves) is always suspect to me and easily removed from play with the DP FCU. Try testing at 250V (L+N to E) as there may be surge suppressors somewhere getting lively. If you’ve time and out of interest I’d whip the fronts off all the outlets and see if that changes anything. If this is the place from the other post, I recall from the cutout pic it had heat affected tails, so there might be further carbonised insulation...

 

[Baddegg]

Hi - the heating system (with its pumps and motorised valves) is always suspect to me and easily removed from play with the DP FCU. Try testing at 250V (L+N to E) as there may be surge suppressors somewhere getting lively. If you’ve time and out of interest I’d whip the fronts off all the outlets and see if that changes anything. If this is the place from the other post, I recall from the cutout pic it had heat affected tails, so there might be further carbonised insulation...

Thanks wilko, gave my self plenty of time,all day in fact, and took off every to the best of my knowledge socket front, yes same place as the other thread and the cpcs on the older (pre 2005) wiring are all blackened/carbonised

 

[Lucien Nunes]

the cpcs on the older (pre 2005) wiring are all blackened/carbonised

Blackened?! Any pics? Not familar with that at all. Is the whole place full of oily soot from wok fires or what? That could be a significant factor in low insulation.

 

[Wilko]

and the cpcs on the older (pre 2005) wiring are all blackened/carbonised

Hi - this visual info could explain the low IR and would suggest those cables need to be replaced.

 

[Baddegg]

Blackened?! Any pics? Not familar with that at all. Is the whole place full of oily soot from wok fires or what? That could be a significant factor in low insulation.

Hi - this visual info could explain the low IR and would suggest those cables need to be replaced.

Sorry for the delay chaps.....

You can make out the blackened cpc, it’s the length of what exposed/visible but only on the older cable

 

[westward10]

Looks like it has oxidized. What's it like with the sleeving off.

 

[Baddegg]

Looks like it has oxidized. What's it like with the sleeving off.

Same @westward10, I’m starting to think sections have been removed in the past

 

[westward10]

The terminal screws are the same. This is normally caused by atmospheric conditions. Are the line and neutrals the same.