Exporting the earth?

[antimatter]

we have different options and this is a forum for posting people opinions on and thats what we are doing.

 

[IQ Electrical]

we have different options and this is a forum for posting people opinions on and thats what we are doing.

The problem is, the IET guidance article and Guidance Notes 8 and 1 are not my opinion, they are IET publications.

Whereas you posted that 'ESQCR forbids exporting PME earth', again, implying that this was a fact, when it was actually you not understanding where a PEN conductor ends in an installation.

I don't think any forum members here would describe my posts as agressive, I just like the facts to be recorded ahead of anyones opinion, including my own.

 

[Deleted member 26818]

There is no prohibition in either BS7671 or ESQCR on exporting the earth in a TN-C-S installation.
The prohibition has always been fron the DNOs.
Their concern primarily is that installation earthing sytems will become the neutral path in the event of a supply neutral fault.

 

[antimatter]

There is no prohibition in either BS7671 or ESQCR on exporting the earth in a TN-C-S installation.
The prohibition has always been fron the DNOs.
Their concern primarily is that installation earthing sytems will become the neutral path in the event of a supply neutral fault.

Thats the way I understand it too.

 

[IQ Electrical]

There is no prohibition in either BS7671 or ESQCR on exporting the earth in a TN-C-S installation.
The prohibition has always been fron the DNOs.
Their concern primarily is that installation earthing sytems will become the neutral path in the event of a supply neutral fault.

Quite correct but is it also not true that the DNO's consider the chances of that type of fault occurring to be so small that they no longer impose terms other than on the obvious special locations?

 

[IQ Electrical]

Thats the way I understand it too.

What?

Your post that 'ESQCR forbids' started this whole thing!

Unbelievable, I must be going mad!!!!

 

[antimatter]

Think you need a chill pill mr iq

 

[IQ Electrical]

I chill knowing this thread will probably be read a few times....

 

[antimatter]

No work today?

 

[telectrix]

the following post is meant to be read in the spirit it is posted.

having been in the trade for a while, when the height of accuracy of resistance measurement was an AVO 7, with a bit of good eyesight you could just about get an accuracy of 1 and a bit ohms, not the zillionth of an ohm we read to now, a caclculator was a slip stickmade by thornton's who now make chocolate, and the only digital equipment was a red led watch, on some boffins drawing board, sketched in pencil, it was usual to TT outbuildings, as most installs were TT anyway . nowadays we have a choice. i only export the earth if the outbuilding has no extraneous metal conductive parts. the dangers inherent having been expained on this thread better than i can. so far nobody has been electrocuted on one of my installs, so i will continue as an old fossil until my legs give way, or goverment increase pensions to a level wherein i can live in the style to which i am accustomed.