Earth continuity

[nicsin02]

Hi there this is been happening in a few houses now I've been testing and im
a little confused, when testing my ring continuity my earth hasn't been the standard 1.67x bigger than live and neutral when using twin and earth 2.5 cable, what causes this? There is no chrome fittings or that so that wouldn't effect any earth readings just standard white plastic, today my neural and lives were 0.8ohms but my earth was only 0.6ohms which is well short, any ideas guys and can someone point me in the direction for the forum app as I can't find it anymore, thanks

 

[Pete999]

Hi there this is been happening in a few houses now I've been testing and im
a little confused, when testing my ring continuity my earth hasn't been the standard 1.67x bigger than live and neutral when using twin and earth 2.5 cable, what causes this? There is no chrome fittings or that so that wouldn't effect any earth readings just standard white plastic, today my neural and lives were 0.8ohms but my earth was only 0.6ohms which is well short, any ideas guys and can someone point me in the direction for the forum app as I can't find it anymore, thanks

Any parallel earth paths that are still connected?

 

[Farmelectrics]

still good readings don't worry the tester never lies lol

 

[Deleted member 26818]

Do any of these houses have metal conduit?

 

[nicsin02]

No metal conduit, just standard twin and earth clipped, it's happened a few times now and was wondering if anyone had any ideas? Could it be down to if the earths are twisted quite a lot at each socket ?

 

[davesparks]

Do N and L match?

 

[nicsin02]

Do N and L match?

Yeah live and neutral were both 0.8

 

[Deleted member 26818]

The fact that the earth conductor has a lower resistance than the line and neutral in T&E, suggests that there are high resistance joints on the line and neutral conductors.

 

[davesparks]

The fact that the earth conductor has a lower resistance than the line and neutral in T&E, suggests that there are high resistance joints on the line and neutral conductors.

Or parallel paths affecting the earth

 

[nicsin02]

The fact that the earth conductor has a lower resistance than the line and neutral in T&E, suggests that there are high resistance joints on the line and neutral conductors.

Thats what I was thinking but for both live and neutral to be slack the exact same amount to give the same reading I thought was unlikely ?

 

[Hellmooth]

Parallel paths seems the most likely.

 

[Guest77]

Agree with Spinlondon actually, that was my first initial thought

 

[TJ Anderson]

Agree with Spinlondon actually, that was my first initial thought

Really. 2 conductors of the same size having matching poor terminations to give identical readings...... so say both incorrect, based purely on the fact that cpc end to end is lower than expected value. Lottery odds that one. Obviously parallel earth paths.

 

[davesparks]

Agree with Spinlondon actually, that was my first initial thought

Thats why is asked about L and N being simillar, which as they are suggests that it is unlikely for that to be the issue

 

[davesparks]

Really. 2 conductors of the same size having matching poor terminations to give identical readings...... so say both incorrect, based purely on the fact that cpc end to end is lower than expected value. Lottery odds that one. Obviously parallel earth paths.

Not quite as clear cut as that, I think 'more likely to be' would be a better description.