Talk:Earthing system

message: Should this:  "the equation IL1+IL3+IL3+IN = 0 holds"   be L1 L2 L3?  --Jmeden2000 23:00, 29 November 2005 (UTC)
replies: text: Yes. Now fixed. Markus Kuhn 23:14, 29 November 2005 (UTC)
thread_title:  Grounding current equation 

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

message: 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_%28electricity%29;
ground_%28electrical%29;
ground_%28power%29;
ground_and_neutral.
Then there is "earthling".
hopiakuta ; [[    { %c2%a1 %c2%bf  %7e%7e%7e%7e  } ;]] 22:25, 24 October 2006 (UTC)
replies: text: 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)

text: I also think that the IEC 60364 terminology used in the article is used at least in the whole EU (for example terms like TN-S, TNC-S are used in harmonised EU terminology in most european languages). I am afraid that the "extreme dependence on region" is just in Your head, mixing earthing system and earthling is demagogical. --85.207.59.18 (talk) 15:06, 23 August 2010 (UTC)

text: Because these are two different things. The earthing system is about how the electrical network is realized having in mind the protection against electrical shock. The electrical ground is present even if there is no network and even if we know nothing about electricity at all, it is reality, part of environment here on Earth. We had lightning rods before electrical networks.  By the way, there is some chaos around "earth" and "ground" even in languages that use the same word for both (like Czech). For example, you should make sure whether you mean "common" or "ground". There is a nice article about it ... ; in case the link is invalid try to search for Can we find common ground about "common" and "ground"?. --85.207.59.18 (talk) 15:06, 23 August 2010 (UTC)
thread_title:  Region? 

message: The IT Network diagram is missing the neutral conductor.
142.59.176.154 19:56, 13 September 2007 (UTC)
replies: text: 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)
replies: text: The NEC clearly defines the neutral wire even if it is not grounded. First, it defines the “neutral point”, as the common point of a split-phase (single-phase three-wire) connection or a polyphase wye/star connection. Then, it defines the “neutral conductor” as the wire connected to the neutral point and that is intended to carry current under normal load conditions. So, there is a distinction between a live/hot/active/phase wire and a neutral wire even in ungrounded systems. Also, in perfectly balanced conditions, the current through the main neutral wire in single-phase three-wire and three-phase four-wire connections is zero; this is another way to distinguish the neutral wire from the live wire. Alej27 (talk) 13:52, 13 December 2023 (UTC)
thread_title:  IT diagram missing neutral 

message: "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)
replies: text: It probably could be worded better. Almost all conductors have resistance, when current flows through them, the voltage at one end will be different from the voltage at the other end due to the resistance. If the resistance is the only concern, and inductance can be neglected, the difference can be found by multiplying the current through the conductor, I, with the resistance of the conductor, R, or stated algebraically, IR. Jc3s5h (talk) 12:07, 26 July 2011 (UTC)
thread_title:  Questions 

message: Is this system still relevant? It is a variation of TN system, having kind of LPEN conductor. --87.100.136.59 (talk) 22:04, 25 February 2013 (UTC)
thread_title:  What about corner grounded delta? 

message: Early in the article the MEN is described as similar to a TN-C-S. Agreed. But then in the comparison table, the Risk of broken neutral is listed as High for TN-C-S and No for MEN. This doesn't sound right at all. As suggested earlier in the article, the multiple earthing points in a MEN system does provide a backup path for return current in the case of a broken PEN conductor (on the supply side not the neutral on the consumer side!), a risk certainly still exists. Any suggestions for a clarification? LightYear (talk) 23:46, 23 February 2012 (UTC)
replies: text: After some consideration, decided to remove MEN column entirely from the comparison table. Since MEN is a combination of TN-C, TN-S and TN-C-S, the summary is different depending on which part of the network you consider. It's just too complicated to summarise unambiguously. Also makes the table suit the article - MEN is only mentioned in a couple of dot points, so to have it take up a big section of the table doesn't make sense. Column was originally added in this edit and unfortunately the editor is anonymous so can't be consulted. I don't think this will be too controversial - if the info from the column is to be retained, it should be worked into the article itself instead. LightYear (talk) 23:18, 17 April 2012 (UTC)
thread_title: MEN vs TN-C-S

message: The table shows no earth electrode at site required for TN-C-S
Australian wiring rules AS3000 Clause 5.1.3 
Under the (TN-C-S) MEN system the neutral conductor is earthed,
at source,  at regular intervals, and at each electrical installation? 
Cotsabaca (talk) 10:09, 29 August 2013 (UTC)
thread_title:  Comparison of Earthing systems 

message: "Sky Voltage" - please include a reference as this seems very dubious.
5/Nov/2015
:The article sky voltage was deleted back in February as original research. I cleaned up the red links. No such user (talk) 08:11, 5 November 2015 (UTC)
thread_title:  Sky Voltage 

message: In safety terms, the TT is the best. So the following report says (page 19)
ect173
--82.21.82.111 (talk) 15:29, 3 March 2016 (UTC)
thread_title:  Safety 

message: Please read High voltage#definition: use of terms "medium voltage" and "high voltage" depends on context. As that article says, one definition comes from system engineering:  Further, IEEE Std. 100 (Standard dictionary of Electrical and Electronics terms, as well as ANSI C84.1, defines medium voltage as "any nominal voltage greater than 1 kV and less than 100 kV." Our article also acknowledges a different definition which comes from safety point of view:  
Now, since this article covers both safety and engineering aspects, either approach can be used, but please don't just go ahead and do as you please, leaving odd phrases like "high voltage systems (1 to 72.5 kV)" which are simply misleading and inaccurate. I fixed the article for now, using "your way". No such user (talk) 07:38, 13 May 2016 (UTC)
replies: text: Avoid using ref tags on talk pages. — LlywelynII 02:11, 8 November 2022 (UTC)
thread_title:  Terminology 

message: I know Wikipedia is not a reliable source but it would still be helpful ifsomewhere on or linkable from this pagewe had a country-by-country list of the grounding regulations. The US seems to require an 8 foot deep spike while France seems to be fine with one 1 or 1.5 m deep. — LlywelynII 02:11, 8 November 2022 (UTC)
thread_title: Grounding Rod Regulations

message: The best electrical earthing work depends on the depth of water level, if the water level of depth is 3 to 4 meters deep then the value of earthing can be up to 1 OHM 92.97.10.226 (talk) 06:08, 2 March 2023 (UTC)
thread_title:  Electrical Earthing Hole Work