Earth

[Wattsy]

WTF is wrong with people these days.........?

Calm down mate i'm only talking in theory.

I've put a new rod in alls fine. :Salute

 

[la poste]

for anyone to even consider going from a TT system to a poor excuse of TNCS it would be of my opinion that they should seriously consider doing a lot more research into earthing systems in the UK.

Can you offer any links?

Lets not forget tt is the most widely used earthing system in the world.And theres reasons why

What reasons?

 

[steptoe]

there is some good night time tomes on here about it.

remember also that TNCS as we know it in this country is NOT what most countries would regard as PME even though it is mooted as such,

true PME requires spiked at every joint and immediately prior to entering a building, and at regular intervals along its length.

ask any cableman if this exists in this country.

you are totally reliant on someone else to provide you with your earth, you wouldnt allow an outsider to do something as basic as to control the heating in your house, so why allow them the control over something that may just save your life someday.

 

[steptoe]

Can you offer any links?What reasons?

cost ,

plain and simple,

although Im not so sure about it being the most widely used,

next time you are out and about in town have a look at the ground, you might be surprised as to how many toby boxes(inspection pits) you see.

 

[la poste]

next time you are out and about in town have a look at the ground, you might be surprised as to how many toby boxes(inspection pits) you see.

That's interesting, so what you are saying is there are more earth rod TT systems around than we think.

It is a system quite commonly used so you say.

You're friend says it is the most commonly used system in the world.

I must admit I am really beginning to like it.

But it needs maintenance, we can't rely on customers taking care of their electrical installations.

One argument for TNCS is we can pass the responsibilty on to the DNO.

"Not my problem for the earthing Guv"

But having your own personal earth under your own direct control really is the ultimate.

The question is.

Is it safer?

Cheers.

 

[Andy™]

Is it safer?

i normal use TNCS can have a voltage difference between earth, and the ground you stand on. TT doesnt.

 

[la poste]

[quote name='Andy

 

[steptoe]

That's interesting, so what you are saying is there are more earth rod TT systems around than we think.It is a system quite commonly used so you say.

You're friend says it is the most commonly used system in the world.

I must admit I am really beginning to like it.

But it needs maintenance, we can't rely on customers taking care of their electrical installations.

One argument for TNCS is we can pass the responsibilty on to the DNO.

"Not my problem for the earthing Guv"

But having your own personal earth under your own direct control really is the ultimate.

The question is.

Is it safer?

Cheers.

WRONG

it is your responsibility

as said before,

DNO have NO obligation to provide you with an earth,

that is ultimately why TT is by far the most preferable system IMO.

you install it and maintain it, surely you put a little label on the CU and fill in the box on the cert with the next inspection due date.

if the householder wants to wing it then that is their problem,

you have done the best you can,

I have yet to come across a TT that didnt provide a good earth except where I've been called to one that has been damaged,

oh, and losing the neutral wont cause all your earthed metalwork to go to 230v, unlike TNCS.

 

[steptoe]

But your bonding to gas and water act like an earth spike anyway.We all have an allready existing earth spike in our properties and we are all connected to it right now.

Adding an earth spike will do little to improve your reading for earth fault loop impedance, if you remove the earth from the neutral of the main fuse if you have TNCS then you are now solely relying on your main bonding as a path to earth. Now measure the earth fault loop resistance, it will probably be quite low and acceptable for a TT system allready.

I am not advocating any dangerous practices here, it's just a theoretical argument.

Cheers.

makes you wonder why using your incoming services as an earth has been specifically prohibited....... doesnt it.?

plastic pipework perhaps......................

 

[Andy™]

DNO have NO obligation to provide you with an earth,

ESQCR does state PME should be made available where possible though

 

[steptoe]

where possible.?

leaves it wide open,

they could say it is no longer available due to our incompetence of being unable to maintain it.

 

[Andy™]

where possible.?leaves it wide open,

they could say it is no longer available due to our incompetence of being unable to maintain it.

exactly