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Re: [TowerTalk] Hauling hardline into a 4 inch cable duct

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Hauling hardline into a 4 inch cable duct
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Wed, 15 Apr 2015 13:51:14 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

I think the rule of thumb is to use a conduit twice the diameter of
the cables.  I remember having one heck of a time pulling two 7/8"
hardlines through a 4" conduit for a C-band satellite installation
at a TV station I was building 30 years ago.

By the time cables twist during the pull, I doubt that you will be
able to add anything to the 6" conduit with your four runs - if you
can even get them in there.  You *may* be lucky if the conduit is
straight with no sweeps on the ends but you're pushing the same
situation I had all those years ago.

I'd go direct burial or at least *two* 6" conduits.

73,

  ... Joe, W4TV


On 2015-04-15 10:34 AM, Keith Dutson wrote:
Excellent question.  I wish I had an answer.  I am planning to run 1 piece
of LFD4-50A and three pieces of LDF5-50A to the shack.  I have heard it can
be buried, but would prefer conduit.  I am now thinking 6 inch for the 30
foot run from the tower, to allow for additional cables in the future.

73, Keith NM5G

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