Talk:Earthing system

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[edit] Grounding current equation

Should this: "the equation IL1+IL3+IL3+IN = 0 holds" be L1 L2 L3? --Jmeden2000 23:00, 29 November 2005 (UTC)

Yes. Now fixed. Markus Kuhn 23:14, 29 November 2005 (UTC)

[edit] Terre

French : terre, earth (is originally from from the Latin terra)194.83.51.64 11:09, 16 May 2006 (UTC) John

[edit] Region?

There should be more info. about which regions prefer "earthing", "earthing system", as compared to "ground", "grounding", "grounded", "grounding system"?

This does seem extremely dependent on dialect, region, neighborhood.

earth_ground;

ground_(electricity);

ground_(electrical);

ground_(power);

ground_and_neutral.

Then there is "earthling".

hopiakuta ; [[ <nowiki> </nowiki> { [[%c2%a1]] [[%c2%bf]] [[ %7e%7e%7e%7e ]] } ;]] 22:25, 24 October 2006 (UTC)

As the article says, it follows IEC 60364 terminology, on which the wiring regulations of many countries are based, but which differs from the terminology most commonly used in North America. You are welcome to append a section on U.S. terminology. Markus Kuhn 14:00, 16 September 2007 (UTC)

Why doesn't someone merge the two articles earthing system and ground_(electricity) then, and put all variants and redirects in the same article? Doseiai2 (talk) 09:28, 5 December 2007 (UTC)

[edit] IT diagram missing neutral

IT-network diagram
IT-network diagram

The IT Network diagram is missing the neutral conductor. 142.59.176.154 19:56, 13 September 2007 (UTC)

As I understand it, there is no distinction between "live" and "neutral" conductors possible in IT networks, because none of the conductors has a connection to earth. Whether 3-phase IT networks are commonly used, and whether these do include a fourth neutral-like conductor connected to the center-point of the generator-star, I don't know. (I would appreciate references on this; the few IT networks that I have encountered personally were all single-phase.) The figure that I uploaded was inspired by one shown in DIN VDE 0100-300, the German version of IEC 60364-3:1993, which does not show any N connection between generator and consumer. Markus Kuhn 13:53, 16 September 2007 (UTC)

[edit] Questions

"A protective earth (PE) connection ensures that all exposed conductive surfaces are at the same electrical potential as the surface of the Earth,"

The UK uses a PE connection yet lots of exposed conductive surfaces are not connected to it.


"TN networks save the cost of a low-impedance earth connection at the site of each consumer. Such a connection (a buried metal structure) is required to provide protective earth in IT and TT systems."

Portable generator IT systems routinely have no earth and no RCD. Tabby (talk) 00:55, 8 December 2007 (UTC)