Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Comments on Cable loops between utility poles?

Post

Cable loops between utility poles?

+4
−0

Sometimes cables between utility poles make a loop and do a U-turn. What is the purpose of such loops?

The loop I'm asking about is in the lower set of wires towards the left of the picture. These must be communication cables. The 3-phase power is clearly evident at the top of the pole.

Here is the other end of the same span.

Is this just extra cable for some possible future connection or maintenance use? Or is there something else going on?

These pictures were taken 5 Jan 2021 in north-central Massachusetts, but I've seen loops like this for years and in many places in the US.


Update, 9 Jan 2021

I went back today to have a more detailed look. Here is a closeup of one of the loops:

Image

And here is a view of the whole span:

Image

I know its not clear in the pictures, but both loops are in the top of the two communication cables, and have nothing to do with the lower cable. Each loop appears to be simply a cable turning around to head back in the direction it came from. The snowshoe-shaped racks appear to just be mechanical support for the loop, and to guarantee some minimum bend radius.

So is this really just a way to store some slack, or is there some other purpose? It seems like rather a lot of slack, but I'm not sure what all the reasons might be that slack is required.

History
Why does this post require attention from curators or moderators?
You might want to add some details to your flag.
Why should this post be closed?

1 comment thread

General comments (4 comments)
General comments

Skipping 1 deleted comment.

Andy aka‭ wrote almost 4 years ago

Just a guess but in your lower picture (ignoring the detail immediately at the support pole and looking a little to the right), it looks like the lower cable might physically swap places with the upper cable in order to get the same induction from the power cables and thus cancel out differential induced voltages. Just a guess really.

Olin Lathrop‭ wrote almost 4 years ago

@Andy: Maybe, but in the top picture you can clearly see that the loop has no effect on the other cable. It may be just a parallax thing in the second picture. I'll try to get back there and take more detailed pictures from better angles.

Andy aka‭ wrote almost 4 years ago

Don't forget to wear your mask.

Pete W‭ wrote almost 4 years ago

I always wondered too... article ... apparently, the extra length of line is so that fiber splicing can be done on the ground ???