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Old 05-26-2009, 05:55 PM   #1
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Black X on Yellow Card on Power Line


Any of you all know what it means when there's a small (4 inch maybe) card mounted at the top of a power pole, with a black X on a yellow background on it?

I've seen these around here since I was a kid and always wondered what they meant. Only some poles (maybe one out of 20 or 30) have it.

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Old 05-27-2009, 05:37 AM   #2
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Black X on Yellow Card on Power Line


I've seen that too, except the ones I've noticed have had X,Y, & Z tags. My guess is that they are identification tags to the POCO for the X, Y, Z legs of the high voltage transmission lines.

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Old 05-27-2009, 07:52 AM   #3
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Black X on Yellow Card on Power Line


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I've seen that too, except the ones I've noticed have had X,Y, & Z tags. My guess is that they are identification tags to the POCO for the X, Y, Z legs of the high voltage transmission lines.

I always thought they were phases A, B, and C

This is kind of interesting

http://www.jea.com/about/pub/downloa...ansformers.pdf
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Old 05-27-2009, 08:09 AM   #4
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Black X on Yellow Card on Power Line


The phases can be labeled anything. A, B, C... X, Y, Z.... 1, 2, 3... Dog, Cat, Pigeon. Doesn't matter as long as they have a set standard.
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Old 05-27-2009, 08:25 AM   #5
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Black X on Yellow Card on Power Line


Hydro here lables them blue, white and red. If you look on the poles you will see the blue, white and red dots indicating which order they are on that pole. White is always the middle one.
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Old 05-27-2009, 10:39 AM   #6
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Black X on Yellow Card on Power Line


I'm not sure this is that since I've only ever seen the X... I will take a picture of it on my phone and post it here soon.
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Old 05-27-2009, 12:08 PM   #7
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Black X on Yellow Card on Power Line


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I'm not sure this is that since I've only ever seen the X... I will take a picture of it on my phone and post it here soon.
Gigs I've wondered that since I was a kid. I've only seen the X too... I've only seen it on older poles used for subtransmission so from 34.5 up to around 115 kv power lines. I don't think it is for phasing either.

For the others that never seen it before it looks kind of like this: (courtesy of paint
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Black X on Yellow Card on Power Line-po-lines.jpg  
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Old 05-28-2009, 06:22 PM   #8
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Black X on Yellow Card on Power Line


Here is a picture.

Sometimes the X faces away from the road, which is even stranger.


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Old 05-28-2009, 06:31 PM   #9
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Black X on Yellow Card on Power Line


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Here is a picture.

Sometimes the X faces away from the road, which is even stranger.


Oh, that! That's just means you have one strike on the Family Feud...
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Old 05-28-2009, 06:34 PM   #10
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Black X on Yellow Card on Power Line


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Oh, that! That's just means you have one strike on the Family Feud...
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Old 05-28-2009, 08:17 PM   #11
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Black X on Yellow Card on Power Line


Way out in the country, that would be a target.
I used to see the porcelain insulators shot up all over the place.
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Old 05-28-2009, 09:30 PM   #12
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Black X on Yellow Card on Power Line


I've always wanted to know why some poles have a metal galvanized 1/2 pipe on them, go up about 6' then have an angled cap.

I'll see if I can get a photo of it.
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Old 05-28-2009, 09:34 PM   #13
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Black X on Yellow Card on Power Line


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I've always wanted to know why some poles have a metal galvanized 1/2 pipe on them, go up about 6' then have an angled cap.

I'll see if I can get a photo of it.
That's providing physical protection for wires running down the pole, usually phone lines.
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Old 05-29-2009, 01:50 AM   #14
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Black X on Yellow Card on Power Line


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Here is a picture.

Sometimes the X faces away from the road, which is even stranger.


I think it's something to do with the aliens. Next time I am abducted I'll ask them.
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Old 05-29-2009, 03:47 AM   #15
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Black X on Yellow Card on Power Line


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That's providing physical protection for wires running down the pole, usually phone lines.
Except that, it only goes about 6' up the pole from the bottom. and there are no wires going in or out of the pipe.

It is not the same as the protective rubbery/plastic cover that I see used for underground service.

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