Earthing systems

[BarnysSocks]

Greetings
TNCS or TNS in a domestic household, which earthing system is preffered?

 

[Click-Sure]

A broken neutral (well, PEN conductor) on a TN-C-S system can quite easily make all of your pipwork / extraeaneous conductive parts become live.

 

[Spark123]

I prefer the concept of TN-S.
Are you really in Vatican City or do you just like the flag?

 

[RF Lighting]

But TN-C-S provides a better earth path.

 

[Spark123]

Not always.

 

[Click-Sure]

And TN-S-C provides a cheaper install for the DNO...

 

[Spark123]

I know - it is also banned from certain locations such as camp sites and marinas (and petrol stations??) owing to the dangers imposed from an open circuit PEN

 

[securespark]

But TN-C-S provides a better earth path.

Not the one I found in ST4..... 1530-something Ohms.....

 

[Spark123]

And my luck was the dno installed a TN-CS a whole 5m away from the transformer pole, my job was to install some sockets for caravans
Don't know how many PMEs they managed to get onto that cable - probably none bar the initial means of earthing. Ended up with a TT system anyway.

 

[Click-Sure]

I've had a TT with a cracking Ze before now, well, the rod was inches from the staked PME pole.

Cheaper than a proper PME conversion any day!

 

[BarnysSocks]

thanks all.
spark, i just like the flag