[TowerTalk] Hauling hardline into a 4 inch cable duct

[Joe Subich, W4TV]

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
>