question about lake with phone poles in it

2000xlt · Jul 13, 2009

someone told me there is a bridge by these poles,,why did'nt they put the wires on the bridge

http://pictures.topspeed.com/boats/.../crop/200710/2008-sea-doo-rxp-x-9_1280x0w.jpg

jtr1962 · Jul 13, 2009

Those aren't phone lines, they're high-voltage power lines. Putting them on a bridge might be problematic should they blow down in a storm. At least here if anything happens to them only the fishes will get fried. I'll admit it looks bizarre seeing poles right in the middle of the lake.

JimmyM · Jul 13, 2009

Not very high voltage by the look of the insulators. They're pretty short.
4160V maybe? Typical residential distribution voltage.

jtr1962 · Jul 13, 2009

JimmyM said:
Not very high voltage by the look of the insulators. They're pretty short.
4160V maybe?

Probably around that. Not super high voltage obviously but still high enough to cause issues if the line blows down on a bridge.

JimmyM · Jul 13, 2009

Oh yeah. Definitely. And still lots of dead fish too!
When I was doing some work for the TVA, they have a pumped storage facility that has a 500kV switchyard. The insulators/bushings were 22ft long. They wouldn't let us out there when it was foggy out.

jzmtl · Jul 14, 2009

We have the same thing here. The St. lawrence river by Montreal has a strip separated by levee to allow ship through without navigate the current, the power lines poles were built on neither the levee (which is a bike path) nor shore, but in the middle of the canal.

StarHalo · Jul 14, 2009

"Well this is where the plans say to put the pole, I don't make the rules.."

DM51 · Jul 14, 2009

Pole-dancing moose

JimmyM · Jul 14, 2009

StarHalo said:
"Well this is where the plans say to put the pole, I don't make the rules.."

Please tell me that's PhotoShop'd

alpg88 · Jul 14, 2009

lol, i belive that, if you call a power or phone comp to relocate their pole, you'll be waiting years, in this case it'll be a lot faster if a truck "accedentaly" knocks it down,
amount of paperwork and permits to relocate poles is just unbelivable, pbly weights more than pole itself

StarHalo · Jul 14, 2009

Our construction are success

Illum · Jul 14, 2009

StarHalo said:
Our construction are success

heh... remind me not to apply my application to your company if this was your boss's idea of a performance video :ohgeez:

Juggernaut · Jul 14, 2009

:laughing: :crackup:

Do you have the You tube address for that?

JohnR66 · Jul 14, 2009

JimmyM said:
Not very high voltage by the look of the insulators. They're pretty short.
4160V maybe? Typical residential distribution voltage.

4160/2400 is not common for distribution anymore. There could be some small patches of old distribution that have not been upgraded in rural areas, but, typical low distribution voltages are now 12500/7200 or 13800/8000. The latter seems to be becoming the standard.

4160 is common in industrial plants were very large motors are used. We've installed 4160 driven pumps in processing plants.

Monocrom · Jul 16, 2009

Illum said:
heh... remind me not to apply my application to your company if this was your boss's idea of a performance video

Scenes from a basic Safety video. Often shown to security guards and factory workers.

JimmyM · Jul 16, 2009

JohnR66 said:
4160/2400 is not common for distribution anymore. There could be some small patches of old distribution that have not been upgraded in rural areas, but, typical low distribution voltages are now 12500/7200 or 13800/8000. The latter seems to be becoming the standard.

4160 is common in industrial plants were very large motors are used. We've installed 4160 driven pumps in processing plants.

Maybe not common in new installations, but have a look at the insulator lengths on poles. a 13kV insulator is easily as long as your forearm. a 2400/4160 insulator is a short stubby little thing. I live in New England. There's a LOT of old infrastructure here, thus LOTS of 4160.
The motor/generators at that pumped storage facility ar 23kV. I was walking past the Air Blast circuit breakers when they opened one day. Startled me so badly I dropped my briefcase. :crackup:

JohnR66 · Jul 16, 2009

JimmyM said:
Maybe not common in new installations, but have a look at the insulator lengths on poles. a 13kV insulator is easily as long as your forearm. a 2400/4160 insulator is a short stubby little thing. I live in New England. There's a LOT of old infrastructure here, thus LOTS of 4160.
The motor/generators at that pumped storage facility ar 23kV. I was walking past the Air Blast circuit breakers when they opened one day. Startled me so badly I dropped my briefcase.

You can't judge voltage by insulators! I've seen 69Kv sub trans. stuff that transits from large pole multi saucer to smaller poles with short cap and pin insulators. Our 12.6/13.8Kv stuff is on poles that look like this:

Those expulsion fuses protect underground feeders and sound like a cannon when they pop.

2000xlt · Jul 17, 2009

thanks, i appreciate all the replys about the electrical "aspect" of my post. though when i said "phone pole" i merely ment "poles" I came across the picture while i was looking at jetskis. Lots of info here

thanks

Diesel_Bomber · Jul 17, 2009

Maybe the poles were there first. Easy to run wires on a bridge. Hard to run traffic over wires.

:buddies:

StarHalo · Jul 19, 2009

Our people are very wealthy in electricity..

question about lake with phone poles in it

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