[TowerTalk] Pulling coax through PVC pipe
patrick_g at windstream.net
Mon Jan 29 11:06:30 EST 2018
Polyester "Mule Tape", never heard of it but glad to get updated!
I never ever pull wires anywhere and fail to leave at least a stout
string in the run to be able to pull a pull rope through in future when,
as is often the case, more conductors are needed. I need to investigate
mule tape. Thanks for the update.
On 1/29/2018 9:04 AM, Dick Blumenstein wrote:
> One slight mod on Patrick's feedback...
> Instead of a rope or stout cable, I would use polyester mule tape
> (maybe about 1/2" to 3/4" wide) attached to the end of your old
> cables, so when your old cables have been pulled through, you can then
> attach the end of that to pull the new cables in, while allowing
> additional mule tape in parallel to the new cables to be pulled in,
> too. I've read the mule tape has less chance of melting any turns in
> the PVC piping. That's what I did when I ran my cables. Also, I left
> about 2 feet of mule tape sticking out each end of the tubing when I
> was done, so that in the future, I could pull additional cables
> through the piping if need be without having to pull out the new
> cables I just installed.
> Dick, K0CAT
> Patrick Greenlee wrote on 1/29/2018 8:40 AM:
>> Yes there are wire pulling lubricants available at your local big box
>> store. Use plenty, be lavish, it won't hurt your wires or conduit
>> and it will make the job easier. You don't have a real tight fit
>> (cables to ID of conduit) but you can cause yourself a problem if you
>> make a bulge where you connect the old to the new if you use the old
>> to pull the new.
>> If it were me I would consider using the existing cable to pull a
>> stout string which in turn would pull a stout rope or wire cable
>> which would be used to pull the new cable. Another consideration is
>> wether to leave the old 14-2 in the conduit or to remove it and put
>> it back with the new coax. I recommend removing the 14-2 when
>> removing the old coax and re-pulling it at the same time as the new
>> coax. Why, you say?
>> Pulling the coax into the conduit with 14-2 already in it has
>> friction between the irregular 14-2 and the new coax that can cause
>> problems pulling the new coax. When re-pulling the 14-2 at same time
>> as coax there is no relative motion between the coax and 14-2, only
>> between the coax plus 14-2 vs the ID of the conduit which is much
>> smoother than the 14-2. Is this last bit of "finesse" required?
>> Maybe. You might be lucky and not need to use the above approach and
>> have everything just go easy and smooth. Doesn't happen often for me,
>> hence the "self defense" strategy.
>> I recommend the Chinese finger grabbers to connect pulling ropes or
>> wire cables to the coax and 14-2.
>> Best of luck to you.
>> Patrick NJ5G
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