After some advise please- Tn-s earth arrangement

[Jimmer84]

Evening all,

Just after some info on the photo attached. It’s a tn-s system with an Earth going to the cu met from under the floor boards. After lifting the boards I found the earth attached as so... I was expecting to see a clamp around the supply cable, not a choc block with legs of unknown origin attached. Can anyone enlighten me on what’s going on here? Thanks

 

[Pete999]

Yes.
Some staff as well.

Whay Forum Staff or IET staff?

 

[Pete999]

Yes.
Some staff as well.

What Forum Staff or IET staff? if it's the later then surely GNs are, if not written by the IET at least the GNs are sanctioned by the IET, so in effect they might as well have written them in the first place, don't you think?

 

[Deleted member 26818]

Whay Forum Staff or IET staff?

IET staff.
Geoff Croneshaw springs to mind.
He’s The Chief Engineer in the IET, think he wrote GN6 and 7?

 

[Silly Sausage]

What Forum Staff or IET staff? if it's the later then surely GNs are, if not written by the IET at least the GNs are sanctioned by the IET, so in effect they might as well have written them in the first place, don't you think?

They're published by the IET, so you would have thought so.
I've always taken them as Electrical Gospel.

 

[Pete999]

IET staff.
Geoff Croneshaw springs to mind.
He’s The Chief Engineer in the IET, think he wrote GN6 and 7?

So in Effect, written by the IET?

 

[Deleted member 26818]

What Forum Staff or IET staff? if it's the later then surely GNs are, if not written by the IET at least the GNs are sanctioned by the IET, so in effect they might as well have written them in the first place, don't you think?

Nope, just the author’s opinion.
Not actually had any disagreements with Geoff, but have with some other staff members over their interpretations of the Regs.

 

[DefyG]

Its not really clear from the photo if its an attempt to use an incoming iron water pipe as a main earth or an attempt at main bonding.
Whatever it is and arguments over continuous earthing/bonding conductors aside it needs correcting!

 

[Jimmer84]

Its not really clear from the photo if its an attempt to use an incoming iron water pipe as a main earth or an attempt at main bonding.
Whatever it is and arguments over continuous earthing/bonding conductors aside it needs correcting!

Cheers mate, I used a 1200 rod and TTd it. Got a nice reading of 37.8ohms. New 10mm ran to gas for bond, water already in place