Talk:Overhead power line

message: This article needs a lot of work. I don't even have enough understanding of what the article is supposed to be saying to correct the problems. Maybe somebody could look at the German version and try to get more accurate translation on some of this. Atomiktoaster 03:24, 17 Jun 2005 (UTC)
thread_title: Needs work

message: In the section that describes how the area near a power line is used, can someone include the fact that those areas are often used for running trails and other recreational uses (ie soccer fields). When there is lightning, does that area have a greater or lesser risk of a lightning strike? (ie is it safer or are you at greater risk when you're underneath one of these lines and you're caught in a thunderstorm?)
68.110.237.188 (talk) 04:36, 15 July 2010 (UTC)
replies: text: It's probably safer to be under one, than not under one. The power line will act as a lightning conductor and you're less likely to be hit. Still, if you're in a thunderstorm, being inside a car is safer, and dryer.- Wolfkeeper 14:11, 15 July 2010 (UTC)
thread_title: Running Trails

message: What does it mean when the term 'helicopters' are used in this context? I can't imagine that aircraft are used in this case?
The pylons (or sections of) are lifted into position by helicopter, particularly useful on difficult terrain or inaccessible locations. --86.43.202.77 (talk) 12:05, 20 October 2013 (UTC)
thread_title: Helicopters

message: I agree with the merge proposal...I'd do it now if I had time.  Text needs work, the history is redundant with the power transmission article and would be well merged there, and there's the usual Wikitis to clear up - the article isn't very authoritative sounding, and needs input from people with relevant experience.  There's a good reason why mechanical translations aren't recommended on Wikipedia. --Wtshymanski 03:54, 20 Jun 2005 (UTC)
replies: text: I'm not so sure (but I'm new here, too). Content is slim right now, but needn't be. Overhead power lines are a big, big subject area if somebody wants to get technical with it; I'd like to add at least a little bit about modelling, etc. Maybe clean up a bit and leave for somebody to expand? John Fisher 03:36, 1 January 2006 (UTC)

text: I oppose the merge. There's a lot of information in this subject that can't be covered in the big electric power transmission article. However, there should be a link in the first sentence or two to the other article. Also, the article needs to be cleaned up. -- Kjkolb 10:23, 16 January 2006 (UTC)
thread_title: Merge

message: Overhead powerline structures may also be used to support cables for telephone, communications, television, and other services. 
An overhead line in telecommunications is a line run on telephone poles, whose wires are not isolated. In order to fasten it to the poles; glass, ceramic or plastic insulators are used. Short-circuits between the wires are avoided by the fact that a minimum distance between them is kept. The telephone network in Germany was re-equipped at high cost to underground cable (and occasionally also overhead cable) since overhead lines are often disrupted by weather; storms damage poles, lines can ice up and collapse due to the weight of ice or snow.
In the United states, a similar system of local and Radio Frequency (on copper wire) carrier circuits were used to provide long distance communication between cities. Open wire was the term given to any wire on an insulator. Local circuits had anywhere from 2 to 20 wires on a pole, with a two wire lead being attached to a pole with wooden brackets, and anything above six wires were typically constructed on a crossarm, with 10 or 20 positions per arm. A typical pole was able to carry up to six crossarms, making for a possibility of up to 30 circuits (for 10 pin) or 60 circuits for a 20 pin configuration. 20 Pin arms were typically found in urban areas. Toll (long distance) lines use a special configuration of crossarm with the space between wires being 8 inches and 18 inches between other circuits. Sometimes the individual pairs were connected with copper pieces between each insulator and the wooden pins to help stabilize capacitance issues. None of the metal pieces were ever grounded, otherwise capacitive coupling would leak energy from the line to earth.
Beginning in the 1950s, however, the open wire began to come down and multi-pair cable became the favoured choice of telephone companies. in the 1960s, microwave and fiber optic technology was put into service, with modern day open wire being nearly extinct today.
(This isn't about a power line so belongs somewhere else, in a more telecomms-oriented article.) --Wtshymanski 17:54, 11 April 2006 (UTC)
thread_title: Telecommunication

message: Could someone comment in more detail on the use of conductor spacers, briefly mentioned here? 132.70.50.117 (talk) 09:41, 23 April 2009 (UTC)
replies: text: Bundle conductors are used because they decrease reactance compared to a single conductor, due to skin effect; having them right next to each other would totally defeat the purpose.— Preceding unsigned comment added by 70.189.170.229 (talk) 21:37, 31 July 2011 (UTC)
thread_title:  conductor spacers 

message: Oops! I almost forgot, because the question was raised in my own talk page rather than here where all concerned editors would see it.  Searching thorough :Commons:Category:Electric insulator a few days ago for a good illustration, I found :commons:File:Endmast_Bernhausen_-_20090909-05.jpeg and chose it for the relatively large size of its disks and their clear outline.  Other pictures from that category or elsewhere have other merits, for example when you click and see the larger version they show color and other details.  I rejected those on grounds that those merits only apply to the larger version, not the small version an ordinary reader sees who doesn't know to click to see the details.  Perhaps I was mistaken and other editors can suggest a picture I didn't see, or can offer better reasons for choosing another.  Jim.henderson (talk) 13:37, 3 January 2011 (UTC)
thread_title:  Insulator photo 

message: Why, what, where, and how does this article need additional citations for verification? Hyacinth (talk) 08:38, 26 June 2011 (UTC)
thread_title: Additional citations

message: We have Compact overhead powerline which is very short, unreferened, and really could be merged here for context and comprehensiveness. --Wtshymanski (talk) 22:17, 30 January 2012 (UTC)
thread_title: Merge 2012

message: I added information about geometric mean radius (GMR) to show more in depth why some of the benefits of having bundling occurs. It could be improved by adding equations of inductance of a line. --Jaebinju 20:56, 27 November 2013 (UTC)
thread_title: Changing Bundle conductors section

message: Is there any reference for following sentence: "Bundled conductor lines will have higher capacitance in comparison with single lines. Thus, they will have higher charging currents, which helps in improving power factor."
My understanding is that: more charging current = more loss; but also capacitance can improve power factor if power lines are predominantly inductive (which I believe they are). I also guess that one cannot reduce reactance by a lot, as LC circuit will become better at oscillating, defeating the purpose. I have tried to find concise explanation of this aspect elsewhere, but to no avail.  — Preceding unsigned comment added by 145.94.217.110 (talk) 13:07, 22 September 2016 (UTC)
thread_title: Comment about capacitance in bundled conductor lines

message: I added a section about representing short length of power line. 
Noticed while citing my source that the Standard Handbook for Electrical Engineers is referenced twice in this article, two different editions but with slightly different formatting. Not sure which one is more proper, so I followed the format of the first one. -Icybears (talk) 22:44, 27 November 2013 (UTC)
thread_title:  Added section, inconsistent citations 

message: Some things that could be added:
* Environmental impact(lots of articles could use an enviromental impact section), effects on birds, migratory animals (wolf predation on caribou)
* Vulnerabilities, icing, wind damage, a place to inline Operation Outward
* Controversy, land owners protest, link to the "boltweevils" and the CU project controversy
* Underground vs overhead, discuss economics, transmission operators, bottlenecks, 
* Right of way, eminent domain, PICON
* Planning process, construction methods, foundations
* Show power conveyed vs. right of way used, limits to power transmission
* Mention HVDC vs AC.
--Wtshymanski (talk) 21:12, 15 April 2014 (UTC)
thread_title: Notes for expansion

message: I didn't see anything on the effects of overhead power on people living close to overhead power. Working in residential construction, I know this is a big deal, as many people will not buy a home near transmission. Typically they state that they are unsafe for some reason. I am inclined to believe it is just hype, however I haven't researched it to know for sure.  — Preceding unsigned comment added by Blaylocks (talk • contribs) 20:10, 15 December 2015 (UTC)
thread_title:  NIBY 

message: Powerline Alaska youtube.com, Wilson Construction Co, 26. April 2016, retrieved 13. Oktober 2017. Video 42:46
Setting the poles solely per heli.(27:40)
Threading the pre-line only per heli-pilot with a double-hooked double-eyed needle underneath the horizontal bar of the towers.(31:00)
My German contribution: https://de.wikipedia.org/w/index.php?title=Hochspannungsleitung&type=revision&diff=169951512&oldid=169918336
--Helium4 (talk) 13:46, 13 October 2017 (UTC)
thread_title:  Building a line based on ship and helicopters 

message: just to answer your question, the sidebar was included with an uncollapsing of the "Visual" pollution section, where this article is linked, to emphasize that overhead power lines are a form of a specific type of pollution. Figured it would help the article with navigational links for readers and such. Ideally, I thought that perhaps an editor or two would author a section on the subject of overhead power lines as visual pollution and then move the sidebar down to that section, which is what is done in other articles of a more general nature like this one. Since nearly all of the links in the sidebar do have it in their articles, it made sense to me to include it here. However, if you cannot make sense of it, that's okay, too. No harm, no foul. P.I. Ellsworth , ed. put'r there 23:04, 14 August 2022 (UTC)
thread_title:  Pollution sidebar