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Old 05-26-2007, 07:39 PM
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Would you do this for a job?

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Old 05-26-2007, 07:49 PM
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Thats quite a charge they neutralize between the transmission line and the chopper.
The first guy to do that probabally found out the hard way.!
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Old 05-26-2007, 07:51 PM
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I bet they get paid well.

I actually saw a TV show on those guys a year or two ago on the Discovery Channel
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Old 05-26-2007, 07:52 PM
 
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Al do you think the white suit is conductive...a kind of Faraday cage?

I imagine it is a well paid job.
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Old 05-26-2007, 07:56 PM
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Originally Posted by Geof View Post
Al do you think the white suit is conductive...a kind of Faraday cage?
Yes it is.
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Old 05-26-2007, 08:01 PM
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I'd be more worried about the heights! Thats some day job you have there ynneb!
They mentioned the suit was 75% Nomex Flame retardant, and 25% stainless steel thred. Wonder if its heavy....
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Old 05-26-2007, 09:02 PM
 
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Its heavy only when you hit the ground!!!!!!!!!!!!!
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Old 05-27-2007, 12:27 AM
 
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Have only worked on de-energised transmission lines, there were 2 "feeds" of 3 phase, 132,000 volts, one feed per side of the towers, and one side was turned off at a time to allow us to change the insulators. Tricky thing was that the inductance was enough from the energised side that we had to clamp earths similiar as those guys did to bring the line down to earth potential (we didn't have a chopper, did this the old fasioned way ).

Even though there were guys working on the next towers with earths on the line, there was about a 2inch spark when we put our earths on...

Heard horror stories of these same earths breaking and the linesman grabbing the conductor, well you can imagine the result. Amazingly enough he survived and was the one telling me the story.

Have also heard of guys climbing down the insulators (very large ones), to live conductors, by the time they get there, there is no path for the current to pass through them back via the insulator and off they do their work.

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Old 05-27-2007, 01:04 AM
 
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Russell

I think I saw the same show as Gerry and they said that it takes a certain number of insulator bells to "hold" the line and then 2 extra. The guy was reaching above one of them so he said there was only one bell between him (on the line) and the ground. Doesn't seem like a situation where I would want to be bridging the bells.

Matt
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Old 05-27-2007, 01:10 AM
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Gotta love YouTube.
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Old 05-27-2007, 08:58 AM
 
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Originally Posted by epineh View Post
Have only worked on de-energised transmission lines, there were 2 "feeds" of 3 phase, 132,000 volts,

Even though there were guys working on the next towers with earths on the line, there was about a 2inch spark when we put our earths on...

Russell.
When you think about the spark length in the video they must have been up around the 500 kV.
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Old 05-27-2007, 09:48 AM
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How the heck, do they get past OSHA?

I'll be honest, I don't know much about power lines, how does the current not fry the electronics in the heli?


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