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Real Life EMF Experiences?

ilander asks: "I've been looking to buy my first home recently and found one that seemed perfect. The one downside is that there are power lines directly overhead (in the yard) as well as a high tension power line tower in the empty lot in back, less than 200 feet away from the house. So does anyone have any personal experience working/living near power lines? Aside from the possible health risks, which may or not exist (depending on who you ask), will I run into any problems with my monitors and TVs? What about DSL, cable and my 802.11b network? How about digital satellite reception? Any help is appreciated!"

15 of 163 comments (clear)

  1. Well, on a positive note... by revmoo · · Score: 3, Funny

    The government mind-rays will be scrambled by the high-energy power lines.

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  2. Real-Life EMF Experiences? by kurosawdust · · Score: 3, Funny
    Yeah I have an EMF experience, happened when I was ten - it's pretty much how you'd think it was...Everyone was standing around waiting for them to play 'Unbelievable', then standing around waiting for it to end

    That and buying a Jesus Jones album are my two great regrets from childhood..

    1. Re:Real-Life EMF Experiences? by Pieroxy · · Score: 3, Interesting

      I remember some news in france a while ago, where a little village was suing EDF (French version of PG&E, but belong to the government) because they came up with a statistics that leukemia rates were just 1200% higher than anywhere else in France... Scary. Of course, it might just have been a hoax.

      Ready to bet your life on the fact that it was? I am not. Let's say there is a 10% chance that these guys were right. Would I risk my life and the ones of my family just because the house in question is a little nicer than another one? No thanks.

      I basically think you've got to reorder your priorities. Mine is order this way: Life first. House second. TV/Computer third.

    2. Re:Real-Life EMF Experiences? by dasunt · · Score: 5, Insightful

      Part of the uselessness called 'science' that they teach in schools deals with electrical current and magnetic fields.

      IIRC, the strength of an electrical field is 1/(distance^2). If we have two distances, we can calculate the drop in the magnetic field as follows: (1/(d1^2)) / (1/(d2^2)) or, more simply: d1^2 / d2^2. Therefore, the difference between living directly under the power lines (assuming that the power lines are 50ft up in the air) and the difference between living a few houses away (say 200 ft) would be 2500/40000 or 5/80ths (about 6%). Living a few more houses away (say, 200 more ft) would result in a drop of 2500/160000 or about 1.5%

      The point of all this math and science is that if power lines can cause cancer, it should be rather easy to detect - cancer rates would be high under the power lines, and fall off sharply.

      I have never seen a study with this result, so its probably safe to assume that power lines do not cause cancer.

    3. Re:Real-Life EMF Experiences? by Pieroxy · · Score: 3, Insightful

      I don't care about proving it. I life my life the way I want. If one day they prove to me that there is no risk, I'll gladly go and live under a high-tension power line. Until then, when in doubt between two houses, one of which being a "potential" risk, I'll go with the safe one. Maybe stupid.

      Think about this one: I give you two glasses of water. One looks clean, the other one looks yellowish. But I garantee you that the yellowish one is as safe as the other one. However, you may choose freely either one of them. Are you going to go with the yellowish water? You would be crazy.

      Why taking this risk - as small as it may be - when you have equivalent other alternatives ?

    4. Re:Real-Life EMF Experiences? by ebbe11 · · Score: 3, Funny
      But I garantee you that the yellowish one is as safe as the other one. However, you may choose freely either one of them. Are you going to go with the yellowish water? You would be crazy.

      Maybe not. The yellowish water might be beer.

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      My opinion? See above.
  3. Well... by Zelet · · Score: 3, Funny

    Sure - I'll die a slow and painful death from cancer, but will my TVwork? :)

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  4. At the old house by MImeKillEr · · Score: 4, Interesting

    Our first house was in close proximity to overhead powerlines. They were less than 200 ft away. More like less than 50.

    The three years we lived there, we didn't notice anything strange health-wise.

    I recall seeing some people do the following (not sure if this is indicative of possible health issues):

    1.Take a florescent light bulb - like the overhead lights in most garages and offices. Make sure its dark out.

    2. Stand under the powerline.

    3. Grab the light fixture with both hands - one at either contact point (the metal ring around the outside, not the pins).

    4. See if the light glows.

    The theory (I guess) was that this indicated power/voltage/whatever was 'bleeding' from the powerlines. The folks who did this swore this was proof that the area wasn't safe to live in.

    YMMV.

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    1. Re:At the old house by Trelane · · Score: 4, Informative

      Inductance. An AC (alternating current) electric line will generate a changing magnetic field (magnetic field first goes in one direction, then the other).

      You have a changing magnetic field. You create a circuit (albeit one at several megaohms) when you touch the light like that. Indeed, you make a big loop.

      You can find the equations for inductance in any elementary physics book. Essentially, the faster the change in magnetic field, the larger the loop the circuit forms, the larger the magnetic field change per unit time (e.g. larger oscillating magnetic field), the higher the electromotive force (voltage) induced.

      Note that emv ~ dB/dt * A (B and A are vectors). That is, assuming your circuit is a 2D object (e.g. circle), then you should orient your circuit such that the magnetic field is perpendicular to it. This will give you the maximum effect.

      Again, refer to college physics textbooks for more information on the subject.

      Synopsis: good for scare-mongering (but remember, scare mongering's Good when you agree with the goals of the scare-mongering (e.g. nuclear power dangers) and Bad when you don't (e.g. Bush's terrorism stuff)!) but otherwise fairly pointless, unless the induced voltages and/or B/E-fields are scientifically proven to be dangerous to humans. To my knowledge, it's currently a wash. Note that statistical data for a region is questionable, since many factors enter in! (The prime exampe for correlation-does-not-prove-causation amongst my professors is the study that showed that, the more electric poles per square mile, the higher the murder rate. (Of course, the primary factor is that the denser the electric poles, the more densely populated the region)).

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  5. Yeah.... by cybermace5 · · Score: 3, Funny

    ...I do. And the third hand is indeed as useful as many seem to believe.

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  6. Resell Value by Hungus · · Score: 4, Insightful

    BIggest issue I see is resale value. How long you plan to stay will affect things also. You may well be convinced that there are not problems with the power lines but it will be difficult to convince someone else to take it off your hands in x number of years.

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  7. I have by slothman32 · · Score: 4, Informative

    I lived 15 years or so 200 feet from high voltage lines. And 500 from a substation. My family and my neighbors are fine. Of course I post on Slashdot so I guess that answers you question. I don't think anything happens from being near them. I didn't even care about it when I found out something might happen.

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  8. Real life induced charge by chrisatslashdot · · Score: 5, Interesting

    I worked my way through college installing sprinkler systems for lawns and landscapes. We used a 16' metal trailer with an expanded steel deck, a steel pipe rack, and several metal lockers. On one job we parked the trailer under high voltage powerlines and got a sizeable shock if we touched the trailer with damp boots or sweaty hands.

    I have also head of people filling a 55 gallon drum with coils of copper wire and stealing power from high-tension wires.

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    1. Re:Real life induced charge by bill_mcgonigle · · Score: 4, Interesting

      I have also head of people filling a 55 gallon drum with coils of copper wire and stealing power from high-tension wires.

      Very clever - I'd heard of 'clothes lines' but not drums full of coils. If they were burried with just the ends exposed they'd be pretty hard to track down.

      So, what kind of electricity do you get out of such a drum? Is it clean enough to run through an inverter onto your home grid? Heh, in a reverse-metered state you could sell it back to the electric company (install a solar panel for cover).

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  9. Electric fence? by TheSHAD0W · · Score: 3, Interesting

    It was a particularly cold night in winter and I was walking out to open the gate to the yard; there'd been a sleet and the fence was coated with ice. Except... When I walked up to the lock, I noticed that one length of chain between the gate and post was free of ice. When I touched it, it was noticeably warm.

    I went back to get my meter, unhooked the chain, and measured the voltage between the gate and post; it measured a wonderful 2.7 volts. Silly me, I then switched the meter to measure current. What as I thinking, using a cheap multimeter across enough current to heat up a heavy metal chain? Luckily I only blew its fuse.

    I called the power company and told them about the stray voltage problem; within a few days they'd established a new ground and my fence is now down to 1/2 volt.