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Downed power lines

Discussion in 'Electronic Basics' started by Abstract Dissonance, Jul 12, 2006.

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  1. I'm curious as to how one, say if they are forced to, approach downed power
    lines. Is it possible to safely get past them? I was thinking that one could
    "ground" each side of the lines by using a long wire that is grounded and
    this should provide a better path of least resistance then the human body?
    To me this would be a very safe method if one could be sure that the wire
    was grounded properly and properly attached to the power lines but is theres
    something I'm missing?

    Thanks,
    Jon
     
  2. Yep, you are missing your mind if you want to mess with downed power
    lines without the proper training and equipment. Leave them alone,
    period.

    BTW, downed power lines can provide some really nice aluminium wire,
    hang around until the power guys have fixed it and then offer to take
    the "scrap" away for them.

    Dave :)
     
  3. John Fields

    John Fields Guest

     

  4. Not around here. The crew has to turn in every foot they take down,
    or risk losing their jobs.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     

  5. It was a hypothetical... surely you could easily have picked up this if you
    read the very first line?
     
  6. Yes, lets suppose.

    Whatever... I guess they don't teach hypothetics when you went to school? I
    never said this was something that would really happen.

    What gets me is that some of you guys are somewhat intelligent but can't
    understand that I was asking a hypothetical. Its not like I'm going to go
    try test out any responses.
     
  7. Phil Allison

    Phil Allison Guest

    "Abstract Dysentery"

    ** Bollocks !!





    ........ Phil
     
  8. Phil Allison

    Phil Allison Guest

    "Abstract Dysentery "

    ** Shame other reader of this OPEN PUBLIC FORUM are at risk from YOUR
    asinine crapology.


    ** Irrelevant what you did NOT say.



    ** The extraordinary DANGER makes it " X rated " - ab initio.



    ** What a damn shame that is.

    Love to see a criminal scumbag fry.






    ....... Phil
     
  9. John Fields

    John Fields Guest

    ---
    Geez, really???

    Silly me, here I thought maybe a power line had fallen across your
    car and you had to get your pregnant wife to the hospital or
    something...
    ---
     
  10. vic

    vic Guest

    Hum, what makes them dangerous ? Danger comes from current going through
    your body, so presumably from one foot to the other one, due to the
    strong voltage gradient on the ground near the cable, right ? So if you
    jump on one foot, would you be safe ? :)
    vic
     

  11. Nope, What I was after if the general principle was right. Now, any
    electrical engineer who actually learned something in school could easily
    answer the question. He would also not hesitate go through powerlines if he
    knew how to ground them. Just like a chemist is not afraid to mix two
    chemicals because he knows what he is doing even if those chemicals are very
    dangerous(probably more then downed powerlines). If there is a simple
    physical law that exist here such as "electricity takes the path of least
    resistance" then there should be no reason to have any problem with downed
    powerlines if you can make sure you are not the path of least
    resistance(ofcourse theres never a way to be completely sure but an
    electrical engineer would be more confident then a philosophy major).

    The real problem is that you get so easily confused if the context of the
    problem is not to your liking. What you need to do is abstract it and
    realize that it has nothing to do with power lines but its just a general
    electricity question. If I would have said it in a more appropriate context
    for you then the answer would be obvious.
     
  12. Guest

    Guest Guest

    A 11 foot pole (non conductive)

    I was thinking that one could
    You ARE missing something. How do you attach your ground wire without
    contacting a "hot" wire?
    If I felt I absolutely had to deal with a downed power line, I might try a
    *DRY* wooden handled garden tool (rake, hoe) to move the line.
     

  13. You are a very dangerous idiot. You have no idea of the voltage on
    the line, or if it is live. To "ground" it would require a very low
    impedance grounding system, and the metal vaporizing from making the
    connection could cause serious injury, or even kill you.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  14. Jesus christ.. did you not read? IT WAS A FUCKING HYPOTHETICAL!!!

    If you don't know what that word means then look it up in the dictionary.

    The only idiots in here I see are the ones who can't understand what a
    hypothetic is.

    I guess you never watched MacGyver?
     
  15. I have actually read in a safty book to do this if you get in that
    situation.
     
  16. Guest

    Guest Guest

    The downed line is already somewhat grounded just by being down on the
    ground. Don't pick it up and break ground and force a path through your body
    to ground. Just shove it sideways.
    I think I would rather have you (instead of these other weenies) with me if
    I got in trouble. You might try to help instead of running away.
     
  17. It shouldn't matter. Just like a bird can stand on a wire because its more
    resistive then the wire itself.

    If, say, you are holding a wire you found on the ground or got out of the
    garage or whatever(its a hypothetical so you can just assume you have it)
    then you just have to walk up to the power lines and toss the wire on the
    power lines and make sure the other end was grounded first.

    You just have to make sure the wire is closer to the power lines than your
    body so it doesn't arc to you to get to the wire. I suppose there might be
    a conductive path through the ground too so maybe you gotta hop on one foot.




    Yeah, but maybe it could arc and get you? If you had some bold cutters then
    maybe you could use them if you grounded it first?(cause surely the
    electricity would go through the cutters then the wire attached to them then
    to the ground?)
     
  18. Your question is too general, theoretical and incomplete to provide an
    answer. From a practical point of view you may survive... or not.

    petrus bitbyter
     
  19. Guest

    Guest Guest

    I've watched the power company guys and they use multiple levels of
    protection. The cherry pickers are insulated, they put rubber mats over
    adjacent hot wires, use thick rubber gloves and jackets and shoes, use poles
    to handle wires and get well paid and have a GOOD insurance plan. Any time
    you make or break a connection there will be some arcing, I've had some
    sparks fly, but they fly between voltage source and ground and past me.
    Don't let sparks startle you into jumping into more danger than you are
    jumping away from. Panic kills, but you won't panic if you are prepared for
    some fireworks. Even if you could throw a knife switch and shut off the
    power you might see some arcing (sparking) and hear some noise. The grounded
    bolt cutters would work IF THEY WERE GROUNDED WITH A LARGER GAUGE WIRE THAN
    THE POWER WIRE AND SECURELY ATTACHED TO A METAL STAKE DRIVEN 10 FEET INTO
    THE GROUND. Personally, I would prefer to rely on insulation and even more
    importantly DISTANCE!
     
  20. John Fields

    John Fields Guest

    ---
    OK, but especially if it's HIGH VOLTAGE, because even if you wear
    rubber shoes and gloves it can be very dangerous if you go to pick
    it up.

    What many folks don't know is that its possible to have a tiny prick
    in your gloves and HIGH VOLTAGE ELECTRICITY will jump right through
    it into your body and fillibrate your heart.

    A good example is we had three blind guys working at the power
    company here, and one of them got killed because he came in contact
    with HIGH VOLTAGE, so in order to make sure the other guys wouldn't
    get hurt the power company put up a whole bunch of signs everywhere
    there was HIGH VOLTAGE that said: "DO NOT TOUCH" in Braille.

    So, the bottom line, basically, is: "What if there were no
    hypothetical questions?"
     
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