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Electric pylons... are they noisy?
In my days in the military I spent a week at a unit training soldiers for
peace keeping duties. Over the mock town was a pylon run and the sound it made was like heavy rain falling. If they are all like that I wouldn't want to live near by. Cheers Jonathan |
Electric pylons... are they noisy?
In article ,
"Dave" writes: We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? I have often heard the overhead lines near me buzzing in damp weather. I dont know whether it only happens at the pylons or not, but there is a pylon within about 30 metres of where I have heard buzzing. It happens all along the length of the cables, not just at pylons. I used to walk under some on the way to work, and you could clearly hear when you were underneath, even when visibility was such you couldn't see them. Alongside a main road, you can hear them for perhaps 100 yards either side (these were the 275kV ones). In the quiet countryside, I would imagine that would be extended. As Dave said, it's more noticable in damp weather. -- Andrew Gabriel |
Electric pylons... are they noisy?
Some are only (!) 132kv. They are local distribution and tend to be quiet.
Don't climb up with your voltmeter! There is usually a notice with the voltage. Long insulators = higher voltage. http://users.tinyonline.co.uk/bigh/bigh/pylonof.htm -- Regards John j "Stuart" wrote in message ... Anyone confirm this and suggest at what distance the noise should be inaudible? Many thanks, Lionel. We have a pylon near where I work. It's very noisy when it's wet. A colleague of mine opened his umbrella in the car park, and sparks started to fly off of it! Personally, I wouldn't want to live near one - I guess it depends on how close it is. Remember, you may want to sell this house in the future, and other buyers may have the same concerns as you. S. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.497 / Virus Database: 296 - Release Date: 04/07/2003 |
Electric pylons... are they noisy?
"Lionel" wrote:
Hello Lionel L| We're planning to move soon but noticed there are overhead L| electric pylons in some parts of the town... health and L| aesthetic issues aside, we are also concerned about the L| fizzy and/or buzzing noise they are said to make. L| Anyone confirm this and suggest at what distance the noise L| should be inaudible? Not all pylons are equal. The big ones do buzz in misty or damp weather, very audibly. Maybe you can't hear 'em behind double glazing, I don't know. I DO know it plays merry hell with mobile and radio signals. Their buzzing also seems to vary according to time of day (I'm guessing load). Small pylons don't buzz, as a rule. Overhead power lines (2 or 3 wires, 11 or 33kv) don't buzz, neither does overhead LV (240vac, usually strung vertically around here). They do arc quite prettily when the wind pushes 'em together though. -- Simon Avery, Dartmoor, UK uk.d-i-y FAQ: http://www.diyfaq.org.uk/ |
Electric pylons... are they noisy?
"Lionel" wrote in message ...
Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? Many thanks, Lionel. The normally only buzz on misty nights and from my own experiance you have to be fairly close as well. Ian |
Electric pylons... are they noisy?
On Mon, 07 Jul 2003 18:03:31 GMT, Simon Avery wrote:
The big ones do buzz in misty or damp weather, very audibly. Maybe you can't hear 'em behind double glazing, Personally I wouldn't want to be that close to a big power line. I know "they" say that the field is "harmless" but... Overhead power lines (2 or 3 wires, 11 or 33kv) don't buzz, Ours sing, I can't quite make up my mind if it's some curious midfrequency oscilation in the single phase pole transformer or just wind induced wire whistle that is amplified by the pole. -- Cheers Dave. pam is missing e-mail |
Electric pylons... are they noisy?
"Lionel" wrote in message ... Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? The buzzing is only the sound of the air molecules being torn apart by the electric stress on them and is often accompanied by a blue glow in the dark. The phenomena is know as corona. the range of the sound depends on atmospheric conditions to a great extent but I would suggest its a bit like living next to a railway line - you soon get used to the sound |
Electric pylons... are they noisy?
"Terry" wrote in message
... John wrote: "Lionel" wrote in message ... Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? The buzzing is only the sound of the air molecules being torn apart by the electric stress on them and is often accompanied by a blue glow in the dark. The phenomena is know as corona. the range of the sound depends on atmospheric conditions to a great extent but I would suggest its a bit like living next to a railway line - you soon get used to the sound Then there are those unsubstantiated stories about people living near power transmission lines having higher rates of cancer! Nothing proven or factual AFIK? And that discussion has been going on for years! The 'official' line is that nothing has been proved. I worked in the industry for 35 years, and whilst I would think nothing of wandering around a major substation, I wouldn't pick a house near a transmission line. I guess that's personal choice, but I still sometimes get the hairs on the back of my neck rising when I drive under a 275 or 400kv line. Oh, and BTW, they're towers, not pylons!:)) I understand that all high voltage system fizz/buzz especially in damp/foggy weather. A rare occurrence in Britain? If one of those big/long high voltage glass/ceramic insulators developed a fault (Rare, as I understand it, unless someone shoots at them etc.) there can be sparks across them or to an adjacent wire and or the metal or wooden poles. But it's nothing to worry about. I wouldn't park under/near them though! I recollect quite by chance parking many years ago under a 275kv line on a damp and misty morning, waiting for a line crew to turn up - we were escorting an abnormally high load. I hopped out of the car, and got quite a belt from induced voltage. |
Electric pylons... are they noisy?
On Mon, 7 Jul 2003 16:25:11 +0100, "Jonathan@Home"
wrote: In my days in the military I spent a week at a unit training soldiers for peace keeping duties. Over the mock town was a pylon run and the sound it made was like heavy rain falling. If they are all like that I wouldn't want to live near by. The ones passing near the CPTA were 440kV, and indeed sang quite loudly. However it was also a very quiet environment (if you ignored the odd gunshots, explosions and irate SNCO's). -- Peter Parry. http://www.wpp.ltd.uk/ |
Electric pylons... are they noisy?
In article , Peter Parry
writes On Mon, 7 Jul 2003 16:25:11 +0100, "Jonathan@Home" wrote: In my days in the military I spent a week at a unit training soldiers for peace keeping duties. Over the mock town was a pylon run and the sound it made was like heavy rain falling. If they are all like that I wouldn't want to live near by. The ones passing near the CPTA were 440kV, and indeed sang quite loudly. However it was also a very quiet environment (if you ignored the odd gunshots, explosions and irate SNCO's). If you wind 1 mile of cable in your garage (as someone did) you can steal the electricity. -- Zaax http://www.ukgatsos.com |
Electric pylons... are they noisy?
On Tue, 8 Jul 2003 02:20:21 +0100, zaax wrote:
If you wind 1 mile of cable in your garage (as someone did) you can steal the electricity. Doesn't sound like a good deal to me! I have the benefit of high voltage cables running over my home and potentially inflicting harm on my family, with free electricity. Or not have the high voltage cables and have to pay for electricity. I know which I'd vote for. Andrew Do you need a handyman service? Check out our web site at http://www.handymac.co.uk |
Electric pylons... are they noisy?
John wrote:
Some are only (!) 132kv. They are local distribution and tend to be quiet. Don't climb up with your voltmeter! There is usually a notice with the voltage. Long insulators = higher voltage. http://users.tinyonline.co.uk/bigh/bigh/pylonof.htm Even 11KV overheads buzz in damp weather. |
Electric pylons... are they noisy?
Simon Avery wrote:
"Lionel" wrote: Hello Lionel L| We're planning to move soon but noticed there are overhead L| electric pylons in some parts of the town... health and L| aesthetic issues aside, we are also concerned about the L| fizzy and/or buzzing noise they are said to make. L| Anyone confirm this and suggest at what distance the noise L| should be inaudible? Not all pylons are equal. The big ones do buzz in misty or damp weather, very audibly. Maybe you can't hear 'em behind double glazing, I don't know. I DO know it plays merry hell with mobile and radio signals. Their buzzing also seems to vary according to time of day (I'm guessing load). Small pylons don't buzz, as a rule. Overhead power lines (2 or 3 wires, 11 or 33kv) don't buzz, They do. Just not very much. Leastways the ones I used to have over the back garden did. neither does overhead LV (240vac, usually strung vertically around here). They do arc quite prettily when the wind pushes 'em together though. |
Electric pylons... are they noisy?
Andrew McKay wrote:
On Tue, 8 Jul 2003 02:20:21 +0100, zaax wrote: If you wind 1 mile of cable in your garage (as someone did) you can steal the electricity. Doesn't sound like a good deal to me! I have the benefit of high voltage cables running over my home and potentially inflicting harm on my family, with free electricity. Or not have the high voltage cables and have to pay for electricity. 'Potentially' inflicting harm...haha. Nice pun. They are harmless really, but the static is annoying sometimes. Personaly I like peace and quiet, so I wouldn't. But teh inflicting harm bit is almost certainly baloney. I know which I'd vote for. Andrew Do you need a handyman service? Check out our web site at http://www.handymac.co.uk |
Electric pylons... are they noisy?
On Tue, 08 Jul 2003 10:24:06 +0100, The Natural Philosopher
wrote: Personaly I like peace and quiet, so I wouldn't. But teh inflicting harm bit is almost certainly baloney. I'm not sure it is possible to draw a conclusion on that. At one time X-rays were considered safe - people used to do magic shows to demonstrate their use. Perhaps an extreme example, but any external influence on the human body could be harmful. Andrew Do you need a handyman service? Check out our web site at http://www.handymac.co.uk |
Electric pylons... are they noisy?
In article , Andrew McKay
writes On Tue, 08 Jul 2003 10:24:06 +0100, The Natural Philosopher wrote: Personaly I like peace and quiet, so I wouldn't. But teh inflicting harm bit is almost certainly baloney. I'm not sure it is possible to draw a conclusion on that. At one time X-rays were considered safe - people used to do magic shows to demonstrate their use. Perhaps an extreme example, but any external influence on the human body could be harmful. Andrew Do you need a handyman service? Check out our web site at http://www.handymac.co.uk Well there is a cottage a few miles from here that sits right underneath a twin 33 kV line. FWIW over 10 years three occupants there have died from various cancers... -- Tony Sayer |
Electric pylons... are they noisy?
In article , John
writes Some are only (!) 132kv. They are local distribution and tend to be quiet. Don't climb up with your voltmeter! There is usually a notice with the voltage. Long insulators = higher voltage. http://users.tinyonline.co.uk/bigh/bigh/pylonof.htm Ah great!. I wondered where than site had gone. Just like the American one the electric pole shrine..a tribute to the lone electric linesman... -- Tony Sayer |
Electric pylons... are they noisy?
In article , wanderer
writes "Terry" wrote in message ... John wrote: "Lionel" wrote in message ... Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? The buzzing is only the sound of the air molecules being torn apart by the electric stress on them and is often accompanied by a blue glow in the dark. The phenomena is know as corona. the range of the sound depends on atmospheric conditions to a great extent but I would suggest its a bit like living next to a railway line - you soon get used to the sound Then there are those unsubstantiated stories about people living near power transmission lines having higher rates of cancer! Nothing proven or factual AFIK? And that discussion has been going on for years! The 'official' line is that nothing has been proved. I worked in the industry for 35 years, and whilst I would think nothing of wandering around a major substation, I wouldn't pick a house near a transmission line. I guess that's personal choice, but I still sometimes get the hairs on the back of my neck rising when I drive under a 275 or 400kv line. Oh, and BTW, they're towers, not pylons!:)) I understand that all high voltage system fizz/buzz especially in damp/foggy weather. A rare occurrence in Britain? If one of those big/long high voltage glass/ceramic insulators developed a fault (Rare, as I understand it, unless someone shoots at them etc.) there can be sparks across them or to an adjacent wire and or the metal or wooden poles. But it's nothing to worry about. I wouldn't park under/near them though! I recollect quite by chance parking many years ago under a 275kv line on a damp and misty morning, waiting for a line crew to turn up - we were escorting an abnormally high load. I hopped out of the car, and got quite a belt from induced voltage. I used to have an old minivan with a long fibre glass aerial thereon . On damp days there is a 475 kV line near here that U could drive under and have sparks about a couple of inches long jump from the inner of the aerial to the vehicle metalwork... Very low current though!... -- Tony Sayer |
Electric pylons... are they noisy?
Lionel wrote:
Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? Many thanks, Lionel. The big jobbies (450Kv) are great fun in extreme weather. "Our" pylons glow with St Elmo's fire sometimes, during summer thunderstorms. Also, when encased with ice during snowstorms, they produce some excellent fireworks for free. Most fun during thunderstorms though - we have shot several home videos of the closest pylon getting hit. Does make a BIG bang though!! |
Electric pylons... are they noisy?
"Andrew McKay" wrote in message
... On Tue, 08 Jul 2003 10:24:06 +0100, The Natural Philosopher wrote: Personaly I like peace and quiet, so I wouldn't. But teh inflicting harm bit is almost certainly baloney. I'm not sure it is possible to draw a conclusion on that. At one time X-rays were considered safe - people used to do magic shows to demonstrate their use. Perhaps an extreme example, but any external influence on the human body could be harmful. As I said elsewhere, the official line is that nothing has been proved. There are some reports out possibly from the National Radiological Protection Board that don't actually say there's no danger, but that there is no evidence to prove there's any danger from electromagnetic fields, which, of course isn't quite the same thing. There was also I think a Swedish report that came out about 10 or 12 years ago that said there was evidence to prove there was a danger. In the end, I guess you pays your money and takes your choice depending on your view point! |
Electric pylons... are they noisy?
In article ,
"wanderer" wrote: As I said elsewhere, the official line is that nothing has been proved. There are some reports out possibly from the National Radiological Protection Board that don't actually say there's no danger, but that there is no evidence to prove there's any danger from electromagnetic fields, which, of course isn't quite the same thing. There was also I think a Swedish report that came out about 10 or 12 years ago that said there was evidence to prove there was a danger. In the end, I guess you pays your money and takes your choice depending on your view point! Well I can tell you that the effects of magnetic fields on developing embryos are well documented for one biological effect. TMS shows that magnetic fields can affect cognition as well. So we know magnetic fields affect biological systems, the question of course is one of field strength (and direction) allied with long term exposure. My wife administered an epidemiology study which measured levels in homes and sought a correlation with cancers. I can't remember what the conclusions were, but I'll ask. It was of the 'did the electricity meter on the other side of the wall from the bed cause my kid's brain tumour?' type. Personally, I wouldn't live underneath high tension lines, but then I earn enough so I don't have to. Peter -- Peter Ashby School of Life Sciences, University of Dundee, Scotland To assume that I speak for the University of Dundee is to be deluded. Reverse the Spam and remove to email me. |
Electric pylons... are they noisy?
"Peter Ashby" wrote in message
... In article , "wanderer" wrote: As I said elsewhere, the official line is that nothing has been proved. There are some reports out possibly from the National Radiological Protection Board that don't actually say there's no danger, but that there is no evidence to prove there's any danger from electromagnetic fields, which, of course isn't quite the same thing. There was also I think a Swedish report that came out about 10 or 12 years ago that said there was evidence to prove there was a danger. In the end, I guess you pays your money and takes your choice depending on your view point! Well I can tell you that the effects of magnetic fields on developing embryos are well documented for one biological effect. TMS shows that magnetic fields can affect cognition as well. So we know magnetic fields affect biological systems, the question of course is one of field strength (and direction) allied with long term exposure. My wife administered an epidemiology study which measured levels in homes and sought a correlation with cancers. I can't remember what the conclusions were, but I'll ask. It was of the 'did the electricity meter on the other side of the wall from the bed cause my kid's brain tumour?' type. I came across one unusual case quite a few years ago, where a very highly strung woman was claiming to hear very load humming from the meter / the low voltage overheads in the street / an 11kv line a couple of fields away / a (defunct and de-ernergised) 132 kv circuit a couple of miles away. She'd been to Bristol (?) Uni to have her hearing checked, and had fans running in her bedroom all night to mask this alleged hum! In the end we tracked it down to some extractor fans in an abbatoir about 1/4 mile away. Got them to turn off the fans whilst telling her that we were disconnecting her electricity supply - there was a reason to mislead her. When she said the noise had disappeared, we could tell her that her electricity hadn't been turned off, but the fans had. She had become totally convinced that the problem was an electrical hum, and we had to prove that it wasn't by leaving her leccy on unbeknowns to her. |
Electric pylons... are they noisy?
In message , tony sayer
writes In article , John writes Some are only (!) 132kv. They are local distribution and tend to be quiet. Don't climb up with your voltmeter! There is usually a notice with the voltage. Long insulators = higher voltage. http://users.tinyonline.co.uk/bigh/bigh/pylonof.htm Ah great!. I wondered where than site had gone. Just like the American one the electric pole shrine..a tribute to the lone electric linesman... I remember sending him a load of photos of microwave towers I worked on a few years ago - the word "obsessed" springs to mind -- geoff |
Electric pylons... are they noisy?
In message , Peter
Ashby writes Personally, I wouldn't live underneath high tension lines, but then I earn enough so I don't have to. Houses are cheap up in Scotlandshire aren't they -- geoff |
Electric pylons... are they noisy?
"geoff" wrote in message
... In message , Peter Ashby writes Personally, I wouldn't live underneath high tension lines, but then I earn enough so I don't have to. Houses are cheap up in Scotlandshire aren't they Yup, with all that granite around Radon's the problem up there...... |
Electric pylons... are they noisy?
Snip
Well there is a cottage a few miles from here that sits right underneath a twin 33 kV line. FWIW over 10 years three occupants there have died from various cancers... -- Tony Sayer Considering one in three of us will get cancer in our lifetime the chances of this happening somewhere in the country are quite high!!!. Me I've worked in high voltage electronics all my life and believe the risks are "B.........T" as an example near where I used to live there was a campaign to stop a mobile phone mast because of the " danger" several hundred yards away was a major radar station pumping megawatts into the air for the last 50 years Problems ...NIL. The High Voltage pylons will suffer from, arcing over the ceramic isolators in the rain some "mains hum" can be heard occasionally. The wind may make more noise over the cables, and the pylons may interfere with TV /Radio reception. THE Q |
Electric pylons... are they noisy?
In article , Succorso Succorso@
no.spam.here.please.we.are.british.ivy-house.net writes Lionel wrote: Hello, We're planning to move soon but noticed there are overhead electric pylons in some parts of the town... health and aesthetic issues aside, we are also concerned about the fizzy and/or buzzing noise they are said to make. Anyone confirm this and suggest at what distance the noise should be inaudible? Many thanks, Lionel. The big jobbies (450Kv) are great fun in extreme weather. "Our" pylons glow with St Elmo's fire sometimes, during summer thunderstorms. Where are *our* pylons do you mean the UK?.. Also, when encased with ice during snowstorms, they produce some excellent fireworks for free. Most fun during thunderstorms though - we have shot several home videos of the closest pylon getting hit. Does make a BIG bang though!! Any of this on the web?.. -- Tony Sayer |
Electric pylons... are they noisy?
Andrew McKay wrote:
On Tue, 8 Jul 2003 02:20:21 +0100, zaax wrote: If you wind 1 mile of cable in your garage (as someone did) you can steal the electricity. Doesn't sound like a good deal to me! I have the benefit of high voltage cables running over my home and potentially inflicting harm on my family, with free electricity. Or not have the high voltage cables and have to pay for electricity. They only harm your family if they decide to go and climb them (or fly kite into them etc). The only reasonably agreed theory behind power lines causing cancer is that they can cause a static charge in the air around them, this air then attracts potentially carcinogenic particles from vehicle exhausts etc which then "hang around" in the air near the lines rather than falling to the ground, meaning you are more likely to breathe them in. |
Electric pylons... are they noisy?
tony sayer wrote:
In article , Andrew McKay writes On Tue, 08 Jul 2003 10:24:06 +0100, The Natural Philosopher wrote: Personaly I like peace and quiet, so I wouldn't. But teh inflicting harm bit is almost certainly baloney. I'm not sure it is possible to draw a conclusion on that. At one time X-rays were considered safe - people used to do magic shows to demonstrate their use. Perhaps an extreme example, but any external influence on the human body could be harmful. Andrew Do you need a handyman service? Check out our web site at http://www.handymac.co.uk Well there is a cottage a few miles from here that sits right underneath a twin 33 kV line. FWIW over 10 years three occupants there have died from various cancers... Cancer affects 1 in 4 people in their lifetime so it's not that against the odds. Not only that but if you're male then you're 95% certain to get prostate cancer before you reach the age of 100 (assuming you don't meet your maker for other reasons before that age, of course). |
Electric pylons... are they noisy?
"Simon Avery" wrote in message
... "Dave Liquorice" wrote: snip DL| Ours sing, I can't quite make up my mind if it's some DL| curious midfrequency oscilation in the single phase pole DL| transformer or just wind induced wire whistle that is DL| amplified by the pole. I'd guess wind - never noticed any hum (except from 240vac transformers under heavy load), and I spent several years working next to 'em. (Contract tree trimming to maintain the 4m safety zone) Aeolian (sp?) vibration! I knew of a section of 33/11kv dual circuit that was in an exposed location on the edge of Salisbury Plain that had the problem. Even some barbed wire fencing nailed to the 'H' pole sang if the wind was in the right quarter! As a generalisation, however, I've never come across it on lv systems. |
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