File talk:World Map of Mains Voltages and Frequencies, Detailed.svg

 

Libya and Japan

Should it be 230 in the west and 127 in the east instead of striped? --JWB (talk) 03:24, 23 January 2010 (UTC)

I think this would be sensible in general. In Japan there is also a clear east/west division and I imagine that in most other striped countries there is a regional division as well. -- 77.184.143.129 10:56, 25 January 2012 (UTC)

Yes - North East Japan looks like 50 Hz according to -->

- Rod57 (留言) 23:48, 12 September 2018 (UTC)

Color

It's intuitively bad to chose a more saturated color for lower Voltage instead of higher. Should get changed if possible. --Itu (talk) 17:28, 4 February 2014 (UTC)

Brazil

Don't you think it is bizarre that Brazil would be the only country in the world with three different voltages? It is indeed, and so bizarre that it could be nothing but one thing: absolutely false!
First, let me say that I am a brazilian electrical engineer, so I know what I am talking about. The brazilian generation and distribution system is three-phase, as probably any other in the world, and completely interconnected. All the domestic distribution circuits operate at 220 volts across phases, and therefore, as stated by physics laws valid throughout our universe, phase to neutral voltage is equal to the phase to phase voltage divided by the square root of 3, or 220 / 1.7321 = 127 volts.
It is true that electrical outlets are wired for 220 V in some regions and for 127 V in others. I don't know which are the historical reasons for that, maybe it's for state safety regulations. However, even where the outlet voltage is 127 V, it is usual to have heavier domestic loads like air conditioners and electric showers connected to 220 V (across phases) to reduce current and wire gauges.
Finally, where does that fanciful 110 volts figure comes from? It seems this value existed 40 or 50 years ago, before the networks were standardized and interconnected, and people tend to consider natural the lower voltage being exactly half of the higher one. — 以上未签名的留言是由该用户加入的： PMWC (留言 • 贡献) 14:15, 1 March 2018 (UTC) --PMWC (留言) 14:19, 1 March 2018 (UTC)

Taiwan

Taiwan seems to be the wrong shade of red. Jidanni (留言) 14:55, 30 July 2020 (UTC)

SVG format error

It looks like the last change (from 9 March 2020 to 20 June 2020) was done with Inkscape and has broken some of the formatting within the file. I've just tried to make a derivative map based on the most recent version and the Brazil shading still shows up even when I comment out all the old country-colour associations. I'm going to attempt to fix this and upload a new version. Hopefully the displayed image itself won't change, but the code in the SVG will return to a more easily editable state. -- Chuq (留言) 01:10, 13 January 2021 (UTC)

Done - it looks like it has worked, but I'm not that experienced in editing SVGs so please ping me if there are any issues. -- Chuq (留言) 01:48, 13 January 2021 (UTC)

Monaco

Monaco seems to be shown with a secondary voltage of 127 volt, this is also shown in the German Wikipedia article of the mains electricity per country, but not on the English one. This would suggest the 127 volt is outdated? Lekkere Kwal (留言) 14:24, 1 December 2021 (UTC)

Colour for USA

@Niknasael, Osunpokeh, Pownerus, Bamboofirdaus, Usuario10489669, and JoKalliauer: This is a widely used file and changes to the colour scheme cause mismatch between captions (and perhaps running text) and the map wherever the colours are mentioned on pages where the file is used. I hope one could reach a consensus here, with consideration for that issue, before doing any changes.

I don't know to what extent Wikipedias & al have adjusted their descriptions according to the November–February changes. Thus I don't know whether the change should be reverted or not for the duration of the discussion, I suppose it should. The previous scheme was used for two years, the Niknasael scheme has been used for two–three months (and I came here because of the mismatch).

If the 110 V outlets dominate in the US, which I assume is the case, I think this should be reflected in the choice of colour. For other countries where two voltages are provided by normal domestic outlets, such as Brazil and Saudi Arabia, this is reflected by having stripes in the two colours. The colour now chosen for USA, violet, is closer to a variant of blue, which seems very wrong. (I didn't find any good information on the US system in Wikipedia, and a Blogspot article, like the one referenced in an edit summary, doesn't seem a reliable source.)

–LPfi (留言) 11:02, 27 February 2024 (UTC)

@LPfi: do not use Wikipedia as a reference for Wikipedia. (If you fully understood the rule, please ignore the rule again Wikipedia:Wikipedia:Ignore_all_rules, but first you need perfect understanding of Wikipedia:Wikipedia:Verifiability#Wikipedia_and_sources_that_mirror_or_use_it)

- The official voltage in the USA is 110-120V, see e.g. https://www.energy.gov/oe/electricity-101

- Far more than 50%a reasonable treshold of USA-households uses a (nomial) Voltage of 110-120

As long as less than 50%a sigificant amount of the households uses an voltage that does not agree with the official one, we should only name the official one.

 — Johannes Kalliauer - Talk | Contributions 14:33, 27 February 2024 (UTC) ; edited at 08:11, 29 February 2024 (UTC)

I tend to use Wikipedia for quick checks on matters I don't have expertise in, here to adjust my wording to the probable case. On the subject matter, I don't think 50% is a sensible threshold, as few countries with more than one system will have 50% or more of both of them. I think that if a third of US homes have non-dedicated outlets of 200+ V in normal rooms, then that is certainly worth a note (different colouring) – especially if they don't have 110–120 V. But I doubt even 5% of homes have such outlets available in normal rooms. –LPfi (留言) 17:12, 27 February 2024 (UTC)

According to en:Split-phase electric power, which seems to be what Niknasael refers to, the 240 V is delivered just to high-demand applications, such as ovens, not to general-use outlets. So if this file is about what is available at the common household outlets, then whether ovens use the US system or the European one is immaterial. The description and the original upload summary talk about "nominal power net voltage and frequency", which doesn't tell whether the file is about nominal power at outlets or in the distribution system, but I think it is obvious that it's the 110–120 V that is the relevant one. I am reverting now. –LPfi (留言) 17:34, 27 February 2024 (UTC)