| Author |
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Lucas Tam
Guest
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 Posted:
Sun May 01, 2005 4:20 pm Post subject:
Pulling A Draw String through a long conduit? |
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Hi all,
I have a driveway that is ~150 feet long. At the base the drive way, I wish
to install a CCTV camera.
In a couple of weeks, I'll be gettig the front lawn landscaped and I
thought it'll be a good idea to place a conduit run down to the base of the
driveway.
I read in this group that some of you pull a draw string through a conduit
using a vaccuum, sucking the string through it - what is the realistic
distance for drawing a string through... before the length/weight of string
gets too long for the vaccumm cleaner to pull it through?
Any suggestions on pulling such a long run like this, or should I just
direct bury a CCTV cable + power?
Thanks.
--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/ |
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Ed Nielsen
Guest
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| Posted:
Sun May 01, 2005 4:20 pm Post subject:
Re: Pulling A Draw String through a long conduit? |
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I regularly suck a string through 150-200' of either 2" or 1 1/4" PVC
with no problem. If there are axcessive bends, I will either suck a
string with a vaccuum and then pull a fishtape back with the string and
pull the cable with the fishtape, or suck in 2 strings.
Through the 2" I'm pulling an RG 11 coax and then a CAT5e flooded and a
16-2 twisted pair (2 pulls), and the 1 1/4" gets an RG 6, CAT5e flooded,
and a 16-2 in 1 pull. I did have a 280' pull through 1 1/4" that caused
some grief (even with lube) until I decided to pull in a fishtape with
the string and attach the cables to the fishtape tape with 2 strings.
CIAO!
Ed N.
Lucas Tam wrote:
| Quote: | Hi all,
I have a driveway that is ~150 feet long. At the base the drive way, I wish
to install a CCTV camera.
In a couple of weeks, I'll be gettig the front lawn landscaped and I
thought it'll be a good idea to place a conduit run down to the base of the
driveway.
I read in this group that some of you pull a draw string through a conduit
using a vaccuum, sucking the string through it - what is the realistic
distance for drawing a string through... before the length/weight of string
gets too long for the vaccumm cleaner to pull it through?
Any suggestions on pulling such a long run like this, or should I just
direct bury a CCTV cable + power?
Thanks. |
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Dr. Anton T. Squeegee
Guest
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| Posted:
Sun May 01, 2005 4:20 pm Post subject:
Re: Pulling A Draw String through a long conduit? |
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In article <Xns96496842997B4nntprogerscom@127.0.0.1>,
REMOVEnntp@rogers.com says...
<snippety>
| Quote: | I read in this group that some of you pull a draw string through a conduit
using a vaccuum, sucking the string through it - what is the realistic
distance for drawing a string through... before the length/weight of string
gets too long for the vaccumm cleaner to pull it through?
|
There are kits you can get from Graybar, and other telecomm
suppliers, that are designed to help with this situation. Ask about the
Greenlee 'Portable Blower Fishing System.' You might also google for
'Conduit Pistons.'
It's worth noting that these kits draw their inspiration from the
pneumatic message-capsule delivery systems seen in Sam's Club, Costco,
and other large buildings. Such systems have, if I recall my history
correctly, been around since the latter part of the 19th century.
| Quote: | Any suggestions on pulling such a long run like this, or should I just
direct bury a CCTV cable + power?
|
Direct-burial cable would certainly be an easier route, but you
should check your local electrical codes. It may be that you would need
to run power in a separate conduit (assuming that it's 115VAC). If it's
low-voltage, this may not be an issue.
Happy tweaking.
--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?" |
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David Lesher
Guest
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| Posted:
Sun May 01, 2005 5:42 pm Post subject:
Re: Pulling A Draw String through a long conduit? |
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Lucas Tam <REMOVEnntp@rogers.com> writes:
| Quote: | I read in this group that some of you pull a draw string through a conduit
using a vaccuum, sucking the string through it - what is the realistic
distance for drawing a string through... before the length/weight of string
gets too long for the vaccumm cleaner to pull it through?
|
Don't pull a string. Lay one.
Go buy a "mouse" for your size conduit. This is a hunk of foam,
with a SPOOL of nylon twine attached.
Tie down the end. Insert mouse. Apply air compressor,
or shop vac, or in one case I used a water hose...
(Not the best idea, but it got stuck.....)
--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433 |
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Lucas Tam
Guest
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| Posted:
Mon May 02, 2005 4:20 pm Post subject:
Re: Pulling A Draw String through a long conduit? |
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Ed Nielsen <egnlsn@comcast.net> wrote in news:-q2dnXJrcssKaenfRVn-
vA@comcast.com:
| Quote: | I regularly suck a string through 150-200' of either 2" or 1 1/4" PVC
with no problem. If there are axcessive bends, I will either suck a
string with a vaccuum and then pull a fishtape back with the string and
pull the cable with the fishtape, or suck in 2 strings.
|
Thanks for the reassurance and clarification : )
--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/ |
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Watson A.Name - \"Watt Su
Guest
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| Posted:
Mon May 09, 2005 12:20 am Post subject:
Re: Pulling A Draw String through a long conduit? |
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"Lucas Tam" <REMOVEnntp@rogers.com> wrote in message
news:Xns96496842997B4nntprogerscom@127.0.0.1...
| Quote: | Hi all,
I have a driveway that is ~150 feet long. At the base the drive way, I
wish
to install a CCTV camera.
In a couple of weeks, I'll be gettig the front lawn landscaped and I
thought it'll be a good idea to place a conduit run down to the base
of the
driveway.
I read in this group that some of you pull a draw string through a
conduit
using a vaccuum, sucking the string through it - what is the realistic
distance for drawing a string through... before the length/weight of
string
gets too long for the vaccumm cleaner to pull it through?
Any suggestions on pulling such a long run like this, or should I just
direct bury a CCTV cable + power?
Thanks.
--
|
I've seen the telco guys pull a new 6-pair thru a 2.5" conduit that was
filled with a 200 pair cable. They used a parachute, and on the end
they had a compressor (trailer on the back of their truck) that's used
for a jackhammer. It'll put out over 100 PSI at a lot of cu ft per
minute. It just blows the parachute thru the pipe.
I would use a conduit 'cause it's cheap to use stuff like sp[rinkler
pipe. It'll make it a lot easier to change the cable if it goes bad.
Sometimes roots grow thru an area and squeeze the hell out of anything
in their way. Using conduit gives a bit more protection for the cables. |
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