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electricity plugs

GarryJones2
post 26.Nov.2010, 05:43 PM
Post #16
Joined: 2.Sep.2010

> Earthed equipment does not use the earth circuit if functioning properly, so it can have no effect on energy usage.

Do you understand Swedish?

I meant the low energy monitors and the "strålning".

Read this

http://www.nyteknik.se/nyheter/it_telekom/...article6649.ece

If you don't understand Swedish, try Google translate's version.
http://translate.google.com/translate?js=n...article6649.ece
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Johno
post 26.Nov.2010, 06:18 PM
Post #17
Joined: 23.Jul.2008

So after spouting incoherencies about earthed and unearthed appliances, you make the quantum leap to electromagnetic radiation and link this somehow to energy useage, where there is no link. If you had read the article you quoted and commented on fitting earth leakage trips and using double insulated appliances which dont need earthing, it might be of some relevance, even though the article makes a spurious link between their use and radiation emissions. Otherwise you havent made much sense yet. Perhaps you think that laptops are dangerous since their mains links are unearthed, and have something momentous to say.

ps Are you Gary Jones alter ego since he is also on line at the moment of posting ?
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Bender B Rodriquez
post 26.Nov.2010, 08:19 PM
Post #18
Joined: 25.Mar.2006

QUOTE (GarryJones2 @ 26.Nov.2010, 05:43 PM) *
> Earthed equipment does not use the earth circuit if functioning properly, so it can have no effect on energy usage.Do you understand Swedish?I meant the low energy monito ... (show full quote)


Yes, I'm swedish, but this is an 11 year old article about electro magnetic radiation for old CRT monitors; not about energy usage, and certainly not applicable to LCD monitors.
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richardbw
post 26.Nov.2010, 08:37 PM
Post #19
Location: Skåne
Joined: 13.Jun.2009

Oh how I miss the chunky but much safer UK plug/socket system! Extended earth pin (engaging/disengaging the safety covers over the live/neutral ports) and individual fuses for each appliance rated over 3 ohms. One has to wonder how others survive the perils of electricity smile.gif
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Johno
post 26.Nov.2010, 08:59 PM
Post #20
Joined: 23.Jul.2008

Ah, chance for some intelligent debate. I was rather upset when years ago a Finnish visitor said that our plug socket system was clumsy, and I thought then of the merits of the ring main idea, separate fuses, shielded sockets etc. But I have grown to like the Swedish system, even though there are rather more types of plug/socket than seem healthy. The UK plugs are now less clunky now that they are moulded, but on electrical grounds the thickness of the pins are far more than needed to pass the current.

I like the simple 2 pins with part shielded pins, their use justified in that so many appliances now do not need earthing (double insulated, even power tools). And petsäker sockets are in use. But the shapes of some plugs to go in both earthed and unearthed sockets is a bit wierd.

Its good that light fittings have their mini plugs and sockets, so that they can be changed without exposing ceiling terminals. But again wierd having 2 types.

Finally 400 v was a bit of a brain scrambler, but most 400 v appliances are permanently wired, even though the 5 pin plugs exist. You get to understand the idea, and realise that 400 v is still (only) 230 v to earth.
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Bender B Rodriquez
post 26.Nov.2010, 09:37 PM
Post #21
Joined: 25.Mar.2006

QUOTE (Johno @ 26.Nov.2010, 08:59 PM) *
Ah, chance for some intelligent debate. I was rather upset when years ago a Finnish visitor said that our plug socket system was clumsy, and I thought then of the merits of t ... (show full quote)


The UK plugs are very ugly and clumsy. I like the size of US plugs, but they feel very unsafe since the sockets are flat and the pins not isolated. My favourite from both safety and size are the flat non-earthed European/Asian plugs.

Essentially the EU/Asian system only has two types of plug/sockets: the flat plugs (non-earthed) and the round plugs (earthed), with respective sockets. Any other plugs/sockets are old ones, not made anymore.
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Johno
post 26.Nov.2010, 10:27 PM
Post #22
Joined: 23.Jul.2008

QUOTE
Essentially the EU/Asian system only has two types of plug/sockets: the flat plugs (non-earthed) and the round plugs (earthed), with respective sockets. Any other plugs/sockets are old ones, not made anymore

Well, Jula and Clas Ohlson must have a lot of old stock to still be selling a wide range of round unearthed plugs and sockets. Including single line sockets, single and multiple wall sockets, multiplug extension boards and 2 way adaptors.
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Bender B Rodriquez
post 27.Nov.2010, 12:03 AM
Post #23
Joined: 25.Mar.2006

QUOTE (Johno @ 26.Nov.2010, 10:27 PM) *
Well, Jula and Clas Ohlson must have a lot of old stock to still be selling a wide range of round unearthed plugs and sockets. Including single line sockets, single and multi ... (show full quote)


Well, that's true, you have the round non-earthed type too, but that's being phased out since the new building standard only allows for earthed sockets and those plugs don't work there. So in total you have three types of plugs and corresponding sockets. The number of slots on your socket/extension board does not really alter the type.
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Garry Jones
post 27.Nov.2010, 01:14 AM
Post #24
Joined: 20.Feb.2005

> Are you Gary Jones alter ego since he is also on line at the moment of posting ?

Haha, no, I have 2 logins GarryJones and GarryJones2

I set up the second one when I had written something wrong as a comment to a news item on here. Thelocal does not allow 2 consecutive comments from one user. In the forums I have one permanently logged in via firefox and one via msie.

> Perhaps you think that laptops are dangerous since their mains links are unearthed, and have something momentous to say.

I found the following on a Swedish site. It says that if you don't earth a computer and plug in network and hdmi cables that it can overload the hdmi cable and break things. The person writing seems to know what he is talking about.

Comments?
Swedish quote:
------------------------
Och undvik att koppla in datorer i ojordade uttag, eftersom det kan ge otäcka krypspänningar när man kopplar ihop dem med andra prylar, tex via nätverk eller långa ljudkablar. I längden går saker sönder.
Det kan jag skriva under på.
Har sabbat två nya tv-apparater genom att koppla ihop tv med dator, innan jag fick för mig att mäta hdmi-kabeln mot jord och hittade 230. (hdmi jobbar med 5V).
------------------------
Source:
http://www.byggahus.se/forum/el/157757-jor...d-tillatet.html
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Bender B Rodriquez
post 27.Nov.2010, 02:33 AM
Post #25
Joined: 25.Mar.2006

QUOTE (Garry Jones @ 27.Nov.2010, 01:14 AM) *
Comments?Swedish quote:------------------------Och undvik att koppla in datorer i ojordade uttag, eftersom det kan ge otäcka krypspänningar när man kopplar ihop dem med and ... (show full quote)


The only way I can see this happening is if the computer has a surge protector and the power supply gives "unclean" voltage.

The protective earth (PE) and the neutral connector have the same potential and in any earthed equipment the PE must not be connected to the active circuit; it should only be connected to the casing. However, surge protectors often use the PE to divert minor voltage spikes and if it is not connected to earth it will not work.
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GarryJones2
post 27.Nov.2010, 02:50 AM
Post #26
Joined: 2.Sep.2010

Thanks Bender, that made things clearer, so when I get my wide screen tv I should not have any worries connecting the pc to the hdmi socket even though my laptop is not earthed?
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Bender B Rodriquez
post 27.Nov.2010, 03:00 AM
Post #27
Joined: 25.Mar.2006

QUOTE (GarryJones2 @ 27.Nov.2010, 02:50 AM) *
Thanks Bender, that made things clearer, so when I get my wide screen tv I should not have any worries connecting the pc to the hdmi socket even though my laptop is not earthed?


Not a problem. Most TVs are not earthed anyway...
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Hawk
post 12.Jan.2016, 09:26 AM
Post #28
Joined: 12.Jan.2016

I was so happy to find this old post today after getting a blue flash when plugging in my laptop in my apartment yesterday night. It seems I have no earth, apart from in the kitchen and bathroom. A common practice in the 1950's in Sweden.
Most apparatus used in the house is double insulated so doesn't connect to earth anyway - tv's and lamps.
The kitchen and bathrooms always seem to be earthed so I guess that makes them safe for dish washers and washing machines.
The fuse board is also very sensitive but is, I guess, extremely safe as it has 10amp fuses for the sockets.
I must admit I really like the look of the unearthed Swedish electrical plug - slightly different to the european molded plug. A really interesting system which has sort of evolved over time.
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Hallander
post 12.Jan.2016, 09:46 AM
Post #29
Joined: 4.Mar.2009

Ah, to be taken back in time to Gary Jones vapourings about subjects that he did not comprehend.

And I too have noticed a flash when connecting laptop charger leads, not just in Sweden but UK also. I surmise that there is a surge when they are first connected, though they are otherwise pretty low consuming. Its nothing to do with presence or absence of any earthing. Oh, and the flatter 2 pin, nice and compact and becoming universal connector is a Euro plug. Its not just Swedish. http://www.worldstandards.eu/electricity/p...-and-sockets/c/ Its a pity the UK shaver plugs are often slightly bigger (based on the old 5 amp plugs).
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Hawk
post 12.Jan.2016, 10:00 AM
Post #30
Joined: 12.Jan.2016

QUOTE (Hallander @ 12.Jan.2016, 09:46 AM) *
Ah, to be taken back in time to Gary Jones vapourings about subjects that he did not comprehend.And I too have noticed a flash when connecting laptop charger leads, not just i ... (show full quote)


To my knowledge this isnt a 'europlug' but a Swedish unearthed plug.
Just to be sure?
Attached Image
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