no earth

[Stroppy]

Bog-all hope of the ground drying out these days!

 

[GLENNSPARK]

Bog-all hope of the ground drying out these days!

you dont take the risk though strops.....
a properly sited, well installed TT system would not be unduely affected either way....
we always take the worst case scenareo strops when dealing with electrical installations.....

 

[Stroppy]

I know we should aim for the lowest possible Ra, but how far would you go before being satisfied with a reasonable result? 4 rods, 8? Dig up the entire garden and bury tape and mesh? My 44 is considerably better than the BGB's max of <200. Is there a 'law of diminishing returns' where you could drive stakes to the centre of the earth and still not get much better? Depends on the ground, I suppose - if you hit a spring you might get better.

Bearing in mind with my service bonding connected I am getting 0.45 I'm satisfied I have a good EFL path.

 

[SteveEmartin]

You are permitted to have a Ze for a TT supply up to 200 ohms - Above 200 ohms it may become unstable..

 

[GLENNSPARK]

You are permitted to have a Ze for a TT supply up to 200 ohms - Above 200 ohms it may become unstable..

but you wouldn`t though....would you...lol

 

[Engineer54]

but you wouldn`t though....would you...lol

Oh yes he would, cause the BGB told him so!! lol!!

 

[Engineer54]

you dont take the risk though strops.....
a properly sited, well installed TT system would not be unduely affected either way....
we always take the worst case scenareo strops when dealing with electrical installations.....

Don't waste any more breath on the matter, he obviously knows far more than us!! ..lol!!

 

[Stroppy]

You are permitted to have a Ze for a TT supply up to 200 ohms - Above 200 ohms it may become unstable..
but you wouldn`t though....would you...lol
Oh yes he would, cause the BGB told him so!! lol!!

So considering my Ra was 125 in the first place I should have left it then, but I didn't!
Anyway I'm not bothering to waste any any more time discussing the subject (I see no-one could be bothered to answer my questions), as it is descending into taking the ---- and ignoring genuine discussion, as usual.

 

[Engineer54]

Bearing in mind with my service bonding connected I am getting 0.45 I'm satisfied I have a good EFL path.

Have i missed something along the way??? Why are you installing a TT system if you have a Ze at the service cut-out of 0.45??

And no-ones taking the ----, you asked for advise got it, and then you start pulling it apart to suit yourself!!

 

[Stroppy]

Yes you have missed something. It is an existing TT system of which I was upgrading the rod as it was giving 125 ohms, which technically satisfies the BGB, but it reality is a bit rubbish. The 0.45 is the resistance of my bonded pipework (underground gas and water pipes) when tested without the earth stake (new or old) connected, not the service head. As I know we shouldn't rely on bonding for our earth path I set about replacing the rod, which got it down to 44.

I was joking about peeling back the plastic off my incoming cable and wrapping the earth wire around the armour.