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#1
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![]() "Ed" wrote in message . 192.196... AndyS wrote in news:58eba0a6-8107-40dc-85e9- : Andy suggests: Couple a garden hose to the end you can find and run water into the PVC.... Go to the area surrounding the buried end and look for the sandy ground to be wet...... Andy W4OAH That's an excellent idea.... but I really hate water in my electrical conduits.... I'll use that as a last resort. Thanks. Ed Hi Ed Have you considered the use of a wad of towel pulled thru the conduit to dry it after using water to locate the burried end? Compressed air could be used in place of the water. The air excaping from the burried end shouild be easily detected. Jerry KD6JDJ |
#2
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Jerry wrote:
That's an excellent idea.... but I really hate water in my electrical conduits.... I'll use that as a last resort. Thanks. Ed When in doubt, couple ways the Pros do it: 1) Run a Metalic Snake thru it, and hook to a (Low Power RF , or a Fairly high power A.F. source-- follow the snake (above ground with an inductive sampler ( or rf receiver)) to the end - use a cable marker (Paint) to follow the duct if needed to find an intermediate point , then repeat agan if necessary. 2) for those that have access to a "THUMPER", can do the same Apply high level of sound to the PVC, and use a listening device to follow the noise, in the ground. Works for locating buried cables for utilities- should work for you! Jim NN7K |
#3
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![]() "Jim-NN7K" . wrote in message ... Jerry wrote: That's an excellent idea.... but I really hate water in my electrical conduits.... I'll use that as a last resort. Thanks. Ed When in doubt, couple ways the Pros do it: 1) Run a Metalic Snake thru it, and hook to a (Low Power RF , or a Fairly high power A.F. source-- follow the snake (above ground with an inductive sampler ( or rf receiver)) to the end - use a cable marker (Paint) to follow the duct if needed to find an intermediate point , then repeat agan if necessary. 2) for those that have access to a "THUMPER", can do the same Apply high level of sound to the PVC, and use a listening device to follow the noise, in the ground. Works for locating buried cables for utilities- should work for you! Jim NN7K What an interesting thread! How about one of those 'stage' smoke machines pumped into the open end? VK5JE |
#4
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![]() How about one of those 'stage' smoke machines pumped into the open end? VK5JE That's a good one, too, but in my case, I KNOW that I duct taped the end of the conduit in such a manner that it is truly air tight... even possibly under pressure. Thanks anyway. Ed |
#5
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![]() "Ed" wrote in message . 192.196... How about one of those 'stage' smoke machines pumped into the open end? VK5JE That's a good one, too, but in my case, I KNOW that I duct taped the end of the conduit in such a manner that it is truly air tight... even possibly under pressure. Thanks anyway. Ed Hi Ed Will the taped end will not leak with 80 PSI air in the conduit? Jerry KD6JDJ |
#6
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On Thu, 16 Oct 2008 17:17:05 GMT, "Jerry"
wrote: Will the taped end will not leak with 80 PSI air in the conduit? Jerry KD6JDJ Well, if it does leak, the sand above the duct tape will dribble down into the 3/4" conduit creating a rather awkward clean up exercise. That's why conduit runs usually terminate above the ground, not below. The trick is to find the conduit end without blowing off the seal. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#7
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![]() "Jeff Liebermann" wrote in message ... On Thu, 16 Oct 2008 17:17:05 GMT, "Jerry" wrote: Will the taped end will not leak with 80 PSI air in the conduit? Jerry KD6JDJ Well, if it does leak, the sand above the duct tape will dribble down into the 3/4" conduit creating a rather awkward clean up exercise. That's why conduit runs usually terminate above the ground, not below. The trick is to find the conduit end without blowing off the seal. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 Hi Jeff It may be of little interest to the OP, but the sand might have difficulty leaking back into a conduit with air blowing out of it. In addition, the air might leak from a small rupture below the oipen end of the conduit. The OP may have no access to compressed air anyway. Jerry KD6JDJ |
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