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Aaron
Lv 4
Aaron asked in Science & MathematicsEngineering · 1 decade ago

What are the wind limitations on residential power lines?

Meaning...

On average, what does it take in wind speeds to disrupt residential power lines at the poles.

Is there some spec that they have to be rated against?

2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Interesting, I would say that there is such a spec, but I am not aware f it.

    At my home (in NJ), the highest winds we have witnessed was during a hurricane (Gloria) in 1985 when local wind speeds were 82 mph. That, incidentally, was the last time we lost the power due to high winds. We recently had gusts of 64 mph, but no power loss in that neighborhood.

    If I can find an actual spec, I'll come back later and add it here.

  • 1 decade ago

    The wind doesn't directly cause you to lose power, there are other factors that would. In a residential neighborhood there are one, two, or three wires way up high. These carry very high voltages, in the 10k-20k range. If the wind sways these wires so far they hit each other, this causes a short in the distribution system. (There are often bars that run with the wires to keep them apart) Most the time this throws a fuse somewhere and just has to be reset. It could also take out a transformer up line that reduces the power from the generation station to these lines however. In a hurricane, numerous lines get knocked down, transformers topple and the whole system must be shut off, inspected, fix and turned back on section by section.

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