Hello all,
I have used my share of Kellems® grips, which are
marketed by Hubbell. I have been an industrial elec-
trician for 35 years; currently UNEMPLOYED, due
to permanantly being layed off from a factory that is
closing up!
I have never used them to pull in coax or control
cables in any conduit, though. If the correct size of
conduit is used and if one has another person pushing
the cables into the conduit while they are being pulled,
taping the cables securely to the fish tape / rope / pull
wire is usually adequate.
Also, I don't like using wire-pulling compound, such as
Yellow 77®, as it dries to a powder and if the cable(s)
need to be pulled out later, it's much more difficult. If
I did have to use a wire-pulling compound though, I'd
also use Yellow 77® - I have used many brands of
the stuff and that one seems to be the best.
73 de Brad, N9EN @ Radio Free Roscoe (IL)®
----- Original Message -----
From: <towertalk-request@contesting.com>
To: <towertalk@contesting.com>
Sent: Wednesday, April 15, 2009 20:00
Subject: TowerTalk Digest, Vol 76, Issue 59
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> Today's Topics:
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> 1. Kellum Grips (WILLIAM H JACOBS)
> 2. Re: Kellum Grips (Daron Wilson)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 15 Apr 2009 14:05:47 -0400
> From: WILLIAM H JACOBS <k5wta@juno.com>
> Subject: [TowerTalk] Kellum Grips
> To: towertalk@contesting.com
> Message-ID: <20090415.140547.2248.0.k5wta@juno.com>
> Content-Type: text/plain; charset=us-ascii
>
> I must agree this (the kellum grips) are the best way to pull cable in
> coundit. I have pulled four high voltage lines thru a duct at the same
> time using four grips (three phase) . As one person stated, we pulled a
> "12 THHN thru at the same time for later use to pull in a rope to pull in
> another run. At least I no longer do it as am now retired industral
> electrician. For the lub we used a product called "yellow 77".
> -Jake-
> K5WTA
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> ------------------------------
>
> Message: 2
> Date: Wed, 15 Apr 2009 11:35:22 -0700
> From: "Daron Wilson" <daron@wilson.org>
> Subject: Re: [TowerTalk] Kellum Grips
> To: "'WILLIAM H JACOBS'" <k5wta@juno.com>
> Cc: 'Tower Talk' <towertalk@contesting.com>
> Message-ID: <011701c9bdf8$f027f7a0$d077e6e0$@org>
> Content-Type: text/plain; charset="US-ASCII"
>
> Pulling a THNN wire in is common for a pull wire, because of the slickness
> of the jacket and the availability of the product on construction sites.
> The soft copper wire lacks the strength to do too much, and unfortunately
> it
> has a fixed lay or coil to it. Pulled off a small spool, it will have a
> coil to it that will tend to wrap around other cables in the same duct.
> Remember the goal to having a 'pull string' in the conduit with existing
> products is to have a 'path' that doesn't wrap around the existing in
> place
> products. Throwing an extra ungrounded wire in a duct with RF cabling
> isn't
> particularly good. It WILL be resonant at some point, so bond it to the
> ground system. Much like using pieces of wire (ungrounded) to secure your
> cables to the tower, they WILL resonate at some frequency and likely not
> to
> your benefit. There are products designed for this use (UV resistant
> cable
> ties, cable grommets, clamps, etc.) which will provide a better solution.
>
> Yellow 77 was a popular wire lubricant, hopefully you can't find it
> anymore.
> It is a waxed based product, and while greasy when it comes out of the
> container it sets up to a hard wax finish and makes adding cables later
> very
> tough. The newer products are water soluble, and do not harden in the
> conduit.
>
> There are so many variables to be considered. Most of the kellum grip
> solutions require unterminated cables. Often, we have cables to pull with
> fittings already on one end that go through the pipe and come out then get
> hooked up. I've pulled coax with fittings, I've even pulled fiber optics
> with delicate fittings already installed. One just has to take care to
> wrap
> and pad all the stuff on the end before pulling.
>
>
>> I must agree this (the kellum grips) are the best way to pull cable
>> in
>> coundit. I have pulled four high voltage lines thru a duct at the same
>> time using four grips (three phase) . As one person stated, we pulled
>> a
>> "12 THHN thru at the same time for later use to pull in a rope to pull
>> in
>> another run. At least I no longer do it as am now retired industral
>> electrician. For the lub we used a product called "yellow 77".
>> -Jake-
>> K5WTA
>
>
>
>
>
> ------------------------------
>
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> End of TowerTalk Digest, Vol 76, Issue 59
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