Talk:Industrial and multiphase power plugs and sockets

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[edit] american stuff

i need an amercan to check the american stuff (i cleaned up the incomprehensible mess as best i could with info from the web but i may have made some stupid mistakes) Plugwash 02:38, 26 Sep 2004 (UTC)

[edit] pages needing attention

chameleon has added the pages needing attention banner. yet i can't find it on the page of pages needing attention. whats going on here? Plugwash 02:38, 26 Sep 2004 (UTC)

[edit] bs 546

theese plugs are neither industrial nor multiphase and so do not belong here Plugwash 02:38, 26 Sep 2004 (UTC)

[edit] NEMA 5-20, 5-30, 5-50, 6-15, 6-20, 6-30, and 6-50

theese are not multiphase and by the sounds of things are not industrial do they belong here (im british so i don't feel its my call to make) Plugwash 02:38, 26 Sep 2004 (UTC)

[edit] Explanation the neons on the triplex outlets.

Possibly add how/why this is used/done. Seeing as the human eye can't really see 60hz flicker. --Sponge! 00:43, 8 Jan 2005 (UTC)

Also, neon? Neon? In the article about power strips, where it talks about surge protection, it mentions indicator lights on power strips and calls them "neon." What's up with that? All my power strips have LEDs, and I can't believe without further explanation that any small indicator-type light would rely on neon... they require stepping up the voltage to significantly higher than 120 or 240 V from what I understand. Sharprs 22:22, 2 November 2005 (UTC)
I have never seen a power strip use an LED indicator... possibly 120 V cannot cause a neon light to glow but 230 V certainly does. Step-up transformers are only required for long neon signs.
You claim all your power strips use LEDs. What exactly is it about the lights on your power strip that makes you think they are LEDs? Afaict small capsule neons are easy to make run directly on mains, its only the long neon tubes that need the high voltages. To get an LED and series resistor arrangement to work well directly off mains would require a series resistor with power ratings on the order of watts which would be both expensive and wastefull of power! Plugwash 01:06, 3 November 2005 (UTC)
So in summary: Neon lights can run on line-level power, which I was unaware of; I do, in fact, know of the trouble of resistance and voltage with respect to LEDs, just hadn't thought about it; and I had never noticed the flicker on the "Ground" and "Surge" indicator lights before this moment (the ones of the type I assumed were LEDs). Sharprs 06:40, 3 November 2005 (UTC)

A standard neon indicator light requires about 60 volts to light up. These are used in many power strips, night lights, etc., with a series resistor. It's better than an LED because with an LED you get about 2 volts across the LED and the other 118 volts goes to waste in the series resistor, but with the neon indicator, you get only about half going to waste on the series resistor.

As for the use of the indicators, you flick your head around or your eyes, and you see, by the persistence of human vision, the phase sequence on your retina, so you can easily tell whether the neons are going clockwise or counter clockwise. Glogger 22:43, 30 December 2005 (UTC)

[edit] What kind of plug is this?

I live in the United States, and this is the kind of plug my clothes dryer uses:

Image:NA240vPlug.JPG

Since there's no picture on the main page, I was wondering what kind of plug it is. --Evice 01:54, Feb 2, 2005 (UTC)

from http://www.stayonline.com/reference/nema_straight_blade.asp it looks like 7-15 or 7-20 and i STRONGLY suspect it is being misused (ie its not being used to supplly a 275V supplly like the plug type implies) but im not an expert on american plugs and sockets. Plugwash 13:40, 2 Feb 2005 (UTC)
looks more like a 10-30 to me (the diagrams on the page quoted above show receptacles so the top contact is mirror image from the photo) --Ali@gwc.org.uk 19:35, 2 Feb 2005 (UTC)
having looked again i tend to agree with you Ali. I didn't realise that with the split phase plugs the earthed versions varied in more ways than just the added pin. Plugwash 22:18, 2 Feb 2005 (UTC)
Ah, yes. It appears that it is a 10-30 plug. --Evice 04:32, Feb 4, 2005 (UTC)

[edit] dubious changes to NEMA 10-20, 10-30 and 10-50 section by evice

http://en.wikipedia.org/w/index.php?title=Industrial_%26_multiphase_power_plugs_%26_sockets&diff=10016880&oldid=10016815 I belive this to be in error and have reverted it.

http://www.stayonline.com/reference/nema_straight_blade.asp groups the 10- series in the "3 pole 3 wire" section in a row labeled "125/250 Volt".

furthermore there is a seperate section for "250 Volt" under "2-Pole 3-Wire Grounding" (the nema 6- series)

from this i would deduce that the plug is (supposed to be) two hots and a neutral not two hots and an earth.

if you have information you feel is more authoritive stating otherwise then please post links/references.

Seems I am mistaken, it looks like grounding is different from most plugs (such as the ordinary 120v plug) - http://ths.gardenweb.com/forums/load/wiring/msg0109563720469.html
Also, could you please start capitalizing? This is not a chat room. --ɛvɪs 23:47, Feb 8, 2005 (UTC)

I had to turn off javascript to get to that page. but yes it seems to confirm what i thought. IE that the connector is two hots and a neutral. Plugwash 00:34, 9 Feb 2005 (UTC)

[edit] receptacles

What are receptacles, as mentioned in the text? Thanks, --Abdull 15:38, 23 July 2005 (UTC)

Receptacles are the sockets into which plugs are plugged.
Atlant 00:45, 24 July 2005 (UTC)
"receptacle" is a synonym for "socket", right?
I think I will search-and-replace "receptacle" so this article only uses the term "socket".
Any objection? --70.189.77.59 16:13, 21 October 2006 (UTC)
Object - the Canadian and US electrical codes calls them "receptacles". "Socket" is too overloaded with other meanings ( you can have an IP "socket", for heaven's sake!). --Wtshymanski 16:29, 21 October 2006 (UTC)

[edit] 200A IEC 309

someone just added this. i'm not an expert but i've never heared of this before and would like to see a reference (preferablly one availible online) Plugwash 20:08, 30 December 2005 (UTC)

[edit] Bulgin plug

I believe Bulgin is an 8-way connecter used for lighting - perhaps someone that knows about it could add a section for it? cdv 11:25, 7 February 2006 (UTC)

Bulgin is a connector manufacturer. What is reffered to in the disco lighting trade as a bulgin connector is a bulgin P551, an 8 way general purpose mains connector that happens to be used for multi-channel lighting connections. Not sure if this is the right place for it though it is a pretty niche connector. Plugwash 12:44, 7 February 2006 (UTC)

[edit] Japanese Type C Sockets

I don't know abuot this topic very well but I live in Japan and know that the Industry here uses different types of plugs and sockets which are Type A, B, C, D and T (as far as I know). The most commonly used is Type C. If anybody is knowlegeable or is good at looking this kind of stuff up it would be cool if you could add it to the article. Here are some Japanese links of the products if that helps...

Type C (C型) Product page: http://biz.national.jp/Ebox/choko/pdf/sta/124-127.pdf (PDF) Type C Image: http://www.tlt.co.jp/tlt/art/catalogue/connectors/image/c20cl.jpg Type D (D型) Image: http://en.wikipedia.org/wiki/Image:Type_D.JPG


Davidkazuhiro 16:19, 20 July 2006 (UTC)

[edit] 13 amps in Switzerland

Does anybody have information please on 13 amp plugs and sockets in Switzerland? Thanks --brough 18:19, 13 February 2007 (UTC)

[edit] IEC 60309 in America

I'm not yet willing to edit it into the article, but I'll note for the record that it's apparently common in America to use the "red" IEC 60309 family for circuits that are 277 V Y, 480 V Δ. This doesn't seem to be in keeping with the exact letter of the IEC 60309 law, but maybe I'm just not seeing it.

Atlant 17:56, 4 May 2007 (UTC)

First things first IEC standards are NOT laws. According to MK there are actually too different types of RED plugs (do you know which one they are using in this case?) but there is no plug covering 480V 3 phase (it sits in a gap between the second red plug and the black ones). Its not that far out of spec though and 3 phase equipment tends not to be too portable anyway so its probablly not a problem in practice. Plugwash 20:08, 15 May 2007 (UTC)

[edit] French multiphase plugs and sockets

France has its own multiphase plugs and sockets system, I didn't find any info on it here on Wikipedia, so here's what I know. First, some photos I took :

Three phases + ground receptacle
Three phases + neutral + ground receptacle, type E socket to scale
Three phases + ground plug
Three phases + neutral + ground plug

(I'll upload these photos on Wikimedia if someone find them useful.)

I believe these are the common plugs for 3 phases/400V here in France. I saw them in factories, in farms, even in some homes where 3 phases/400V was needed. The 3 phases+ground is common, the 3 phases + neutral + ground is less seen. They are rated 400V 20A. I'm not sure if they're still installed in new constructions (they may have been replaced by IEC 60309) but they're still used. In fact, I always saw these plugs for 3 phases/400V and have yet to see an IEC 60309 plug. The plug without neutral can be mated with a 3 phases/neutral/ground receptacle (the plugs are the exact same size, the only difference between the two is the neutral).

Another type of french-specific plug not mentioned on Wikipedia is the monophase 20A plug :

Receptacle
Plug

Rated 250V 20A, this plug was common with kitchen ranges, ovens and washing machines. I believe they are obsoleted, as today most kitchen ranges and ovens are directly wired, and most (if not all) washing machines are sold with a CEE 7/7 plug. Adapters could (and may still) be found to plug an E plug in these plugs : 1 2 3

FF7Sephiroth (talk) 22:42, 5 June 2008 (UTC)