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#474773 11/25/08 09:28 PM
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gisdude Offline OP
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Hey all. I'm a cable guy from way back and now I switched to power. I'm pretty good at calling out wire sizes by site for cable(rg-6, 11, fiber) and am pretty good at calling out power (2/0, 477kcmil, etc.), but I really don't have a good take on aerial phone. I can pretty much call out 900pr(cuz it's the thickest one I've seen). Is there a good manual/book for identifying cable just by sight.

Any help is appreciated.


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#474774 11/25/08 09:51 PM
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
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All outside plant cables are made to the same specific dimensions and standards. A 900 pair copper cable is the same diameter regardless of manufacturer. OSP cables range in size from 6 to 4,200 pairs. There are even some as large as 5,400 pairs. A 1,200 pair aerial cable that is 26 gauge is nearly identical in diameter to a 600 pair cable that is 24 gauge, especially when viewed from the ground.

I'd guess that the Bell System Blue Book of Construction Standards or GTE's Outside Plant Construction Practices would have set the original standards, but the manufacturers pretty much call the shots nowadays. They all work together to maintain these original construction standards.

Here are some manufacturer's links:

Superior/Essex

General Cable

Of course, there are many manufacturers of OSP cable, but keep in mind that they all maintain the same general dimension and construction standards.


Ed Vaughn, MBSWWYPBX
#474775 11/26/08 09:34 AM
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gisdude Offline OP
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Ev,
Thanks for the reply. I'm doing this research cause sometimes when I do some calcs for guying for a Joint Pole(when Power, Phone, and Cable) are on, you're basically guessing the "pull" tension of their cable. Granted, I'm pretty conservative on my guesses, but it would be nice to figure out the actual tension that their wire has on the pole.
I guess I'll have to keep searching.

Thx for the reply


"A goal is often not always meant
to be reached, often is serves as
something to aim at." - Bruce Lee
#474776 11/26/08 08:58 PM
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Jeeze Ev 5400 pair the last I heard of (22+ years ago) was 2700, times sure change huh?

#474777 11/26/08 09:40 PM
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Jim:

I wasn't implying that pair counts this large are still being placed. 5,400 pair, 28 gauge pulp in order to maintain the maximum 3.25 OD for use in 4" ducts was made to accommodate congested areas in major cities. I seriously doubt that it's still being made or installed. I'd be surprised to see anything new larger than 3,600 pair being placed today since fiber and remote electronics are so much easier and cheaper.


Ed Vaughn, MBSWWYPBX
#474778 11/27/08 09:03 AM
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gisdude,

When placing guys it depends on the messenger strand and wether it is a head guy or a down guy. With head guys fir instance if the messenger is 10M strand then the down guy should be 16M. For corner guys it depends on the angle and whether it is a pull to or a pull away corner. You should go by either Bell(AT&T,or GTE) practices.


Al

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