Weird Earth Fault

[westward10]

What disappears. Randomly changing components is only guesswork you need to find the actual problem causing the issue.

 

[ThrownRazor25]

I never randomly changed anything. As i said the 8 ohm disappears when the live and neutral disconnected from rcbo so i suspected a faulty rcbo. I changed it to see if a new one had tbe same result. It did.

 

[westward10]

If you have 8ohm between line and earth you would have 20 + odd amps flowing.

 

[ThrownRazor25]

How can i touch it randomly then?

 

[PEG]

How can i touch it randomly then?

.....it's easily done....i have the restraining order,to prove it...

 

[ThrownRazor25]

dunno what to do with this one.

 

[static zap]

... Strange thing is though i can touch the earth connection with the probes of my meeger and you can see and hear the zap,

If you can get 6mm of spark , that's aprox 10kV of static .

(was it pretty toasty there ? (mid winter also works when ground frozen))
Moving around -from shoes , sliding over a carpet / getting up from seating - will also re-charge you.
(If they are having computer problems - Ionisers /van der graaf !)

 

[Deleted account]

Sounds like it’s a build up of charge in the person rather than the switch screws.

When coming into contact with the well grounded/ earthed screws the charge is released.

 

[DPG]

Just to confirm, do you mean 10 Ohm live to earth, or 10MOhm when you test IR?

 

[ThrownRazor25]

10 ohm live to earth. Been reading a lot about loss of neutral on a tncs system. Could this be the cause?

 

[westward10]

Have you done a line to neutral loop test with the earthing conductor disconnected. Can you not see the effect of a 10 ohm resistance between line and earth.

 

[ThrownRazor25]

It is def 10 ohm between live and earth but then it disappears. Same as the zap once it zaps it disappears i can touch the backbox for as long as i want but walk away come back zap

 

[James]

Might seem daft, but if you get a zap then stand still for 5 min, do you get zapped again when re connected with it?

 

[ThrownRazor25]

Really dont know what to do with it. With main switch off, there is no continuity value just a constamt clicking on tester saying im getting continuity then not then getting then not etc
[automerge]1570226928[/automerge]
Going back on thursday as homeowner is away till wednesday night. She says it has been like that since she moved in 6 years ago. I never tried that james.

 

[westward10]

Because with the main switch off you are isolating the neutral from the external neutral earth connection.