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Old Yesterday, 01:59 PM
 
Location: Mt. Pleasant SC
123 posts, read 89,413 times
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Quote:
Originally Posted by turf3 View Post
Come on guys, the OP didn't ask any weird paranoid stuff, just wanted to know what they are.

OP, these are insulators for high voltage power lines. The ridges have to do with avoiding arcs from the line to ground (for example, in the rain, that wooden pole would be electrically connected to the ground). I can't remember the details of why the insulators are ridged, or why there are multiple disks stacked.

These kinds of insulators are generally made of a ceramic material, which in this case appears to be shiny brown.

Someone with better knowledge of power lines may chime in to correct what I've put here.
My apologies....just having fun out of my own electrical ignorance. I have no idea what those things on the pole do.

No insults or ill will intended.

G
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Old Yesterday, 04:29 PM
 
Location: Washington state
5,174 posts, read 2,620,024 times
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Thank you, OP, for asking this. I learned something new today because of it and got a laugh out of some of the answers at the same time.
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Old Yesterday, 06:40 PM
 
Location: Eugene, Oregon
8,577 posts, read 2,754,740 times
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They're decoys to grab the attention of drunken rednecks with shotguns in pickup trucks, so they won't shoot down the actual electric lines and breaker-boxes.
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Old Yesterday, 10:25 PM
 
2,725 posts, read 679,235 times
Reputation: 3094
Quote:
Originally Posted by LauraC View Post
I don't know the right place to ask this question. I took this photo while I was shooting crow photos for the purpose of creating an abstract image out of it. I'm showing you the non-abstract/non edited image in the hope that someone can tell me what these round things are called on a wire attached to a utility pole so I can properly title the abstract version. Found another photo of them on Google Images "utility pole" search but when I went to the website of origin, the photo was no longer there. I apologize in advance if this isn't the right forum to ask the question.

These insulators keep the wire ("conductor") a certain distance from the pole. They're held straight out from the tension pulling against it.

Utility poles with this style of insulator stretched out sideways are often corner poles, whereas poles with these insulators hanging straight down are in-line holding the conductor in a straight path.

The reason for the weird design is not only does it provide distance from the pole, but having this uneven arrangement of ceramic plates offers better protection against an arc than a straight, smooth design.
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Old Today, 12:04 AM
 
27,929 posts, read 39,379,951 times
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Lineman Backgammon.
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Old Today, 02:12 AM
 
Location: Somewhere in northern Alabama
17,497 posts, read 53,231,521 times
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George Foreman Squirrel Grill.
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Old Today, 08:03 AM
 
6,526 posts, read 3,510,841 times
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Side note on insulators is historically they came in lots of shapes and colors, esp the glass ones used on very old telephone and telegraph poles. Some of those can be quite colorful and decorative and have become collectors items. The green glass ones seem to be very popular.
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Old Today, 08:22 AM
 
Location: North Beach, MD on the Chesapeake
33,648 posts, read 41,278,130 times
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Quote:
Originally Posted by tnff View Post
Side note on insulators is historically they came in lots of shapes and colors, esp the glass ones used on very old telephone and telegraph poles. Some of those can be quite colorful and decorative and have become collectors items. The green glass ones seem to be very popular.
I don't know if it's still in the booklet but there used to be a largish paragraph in the PA hunting regulations about shooting at insulators being a big illegal no no. I always laughed because I couldn't imagine someone doing it. I figured it had to be people from Pittsburgh or Ohio who would. Maryland used to have it too. I haven't noticed it for some time.

I have some green and tannish ones.
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Old Today, 10:02 AM
 
Location: Aurora Denveralis
6,149 posts, read 2,186,809 times
Reputation: 9628
Quote:
Originally Posted by tnff View Post
Side note on insulators is historically they came in lots of shapes and colors, esp the glass ones used on very old telephone and telegraph poles. Some of those can be quite colorful and decorative and have become collectors items. The green glass ones seem to be very popular.
That's because they're probably Hemingray 42s, the... Chevy Nova of insulators. They can be found by the zillions, even a variety of colors, but most are almost worthless to collectors.

I had an avid collector in the family, and some of the truly unusual designs and colors are art objects in themselves.
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