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Let it snow let it snow
Good to be careful. Our distribution lines are 14.4KV but 7KV is sure nothing to sneeze at. On the fire crew, we never use water on a fire started by a down-line, and snow would be the same issue. Maybe a power deflector mentioned in another thread would be good.
Boy that blower dust sure does sting the face and my blowing is usually in below 0F temps. I've gotten real artistic with the power chute and changing my patterns to suit the wind. Still haven't gotten a snowmobile helmet but this year I cut some notches in the foam face part of a ski mask so I can wear my glasses on the outside. All they do on the inside is fog as I found out last winter.
Incidental to this thread but maybe a good thing to know for people who are around high voltage lines: If you find you're having a hard time moving your legs then the ground may be electrified. I believe standard safety advice is to put your ankles together and hop backwards the way you came. Don't sit down and falling down likely means death. Before I joined the fire crew I was involved in a fire started by a downed 14.4 K line. It's good to recognize the sound it makes and it's something I never want to hear again. I can only imagine the sound downed 250,000 K line makes--we have those around here too.
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Let it snow let it snow
I've never heard the story and I doubt the voltages on lines close enough to the ground to be contacted would be enough for voltage to jump from the rims to the ground around the tires. If the were, it sure could happen by starting a fire under the tires. Our downed 14K line did start a bunch of fires. Suppose it could happen because if nothing else any CACL in the tires is very conductive.
I've heard stories of voltage both clamping a person on to the source as well as flinging them clear. If she didn't clear the tractor as in Blizzard's comment most anything could happen. Voltage causes strong uncoordinated muscular contractions. The usual cause of death from electrocution is respiratory or cardiac arrest and doesn't require prolonged contact with a source. One of my BIN's friends was killed a few years back in a similar situation.
On the subject it might worth knowing that you can't be sure you're safe around a downed line even if you're OK and aren't moving. Current can travel through moisture on surface material to a good ground at considerable distance. Heat from the current dries out the path and then another path, maybe in an entirely different direction, has the least resistance. That was the case in our downed lined. The bush would flare up; the fire crew would fling shovels of sand from the highway on the fire and then it flare up somewhere else. It took the utility about 1.5 hours to shut down the line. I'd be one of them doing the flinging now.
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02-06-2004, 07:46 
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