I'm not sure we ever figured the actual cause out since the one i can think of most recently was buried.. just was able to trace it to a point and no further. This was years ago at this point. I also remember water penetration to be an issue in another case where a conduit filed with water.
I know thhn can be fairly easily damaged when buried since the jacket is relatively easy to puncture. I'm assuming the "correct" wire is a harder, rock-resistant coating. On Mon, Jan 9, 2023, 10:17 AM Josh Luthman <j...@imaginenetworksllc.com> wrote: > That's a good point - the 24 gauge we use is part of the fiber > insulation that has fiberglass strength members. I don't think you would > want to place insulated 24 gauge straight in the hole because it is weak. > > >The question is how to ensure that section is locateable. > Yep ground rod it is. This is what we do every 100-1500 feet in our > handholes for fiber (which is conducted via armor, no idea what that would > be in terms of gauge). > > >thhn direct bury tracer wire fail, or at least not be locatable past a > certain > Fail as in it broke? Bigger cable would break less, but at what point do > you stop? The 14 gauge sounds like a good option if that's what UDOT wants > and it's durable - it's just expensive. If it's cheaper than a repair then > it absolutely makes sense. How often are you digging up 3 foot water lines? > > > > On Mon, Jan 9, 2023 at 12:05 PM Chuck McCown via AF <af@af.afmug.com> > wrote: > >> 14 gauge is rugged and will last. I think the gas company out here uses >> 14 gauge. 20 gauge on up is not terribly strong. UDOT recently changed >> their spec for the tracer molded into MD7 microduct from 20 gauge to 14 >> gauge. >> >> *From:* Josh Luthman >> *Sent:* Monday, January 9, 2023 9:37 AM >> *To:* AnimalFarm Microwave Users Group >> *Subject:* Re: [AFMUG] Direct bury tracer wire >> reccomendations/experience. >> >> Don't you have some random copper laying around? Our fiber tracer wire >> is 24 awg. Just place the conductive wire in the same hole as the >> water/sewer lines. The color is kind of pointless but I guess you could >> spend the money and follow the rules *shrug*. >> >> If the wire ends the locate ends. Why not just extend the wire with the >> new pipe? >> >> 14 gauge seems like way too big if you ask me, that's a lot of money down >> that new sewer line. >> >> On Mon, Jan 9, 2023 at 11:31 AM Forrest Christian (List Account) < >> li...@packetflux.com> wrote: >> >>> I'm working on doing specs for a project (home) which will require >>> burying new water and sewer lines on the property. >>> >>> I'm tired of not being able to locate these after they're buried so I >>> plan on having the contractor bury some tracer wire along with the plumbing. >>> >>> I've learned that the best option for things like this is to either spec >>> or provide exactly what I want buried. Otherwise you'll end up with some >>> inexperienced contractor which installs something which won't work. >>> >>> Apparently the choices for tracer wire are far more varied than I had >>> expected. Insulation, metal type, gauge, color, and so on. >>> >>> It looks like 14AWG copper HMWPE might be what I'm looking for. But >>> there are other options as well. Does any of this work better or is less >>> (or more) likely to be damaged in a way which makes it untraceable? I'm >>> assuming green and blue will be needed for sewer and water. >>> >>> I don't think the following will apply, but there is also the >>> possibility that at least one of the lines won't terminate at one end >>> anywhere that we can poke the wire up above the ground (tapping into >>> existing line) I'm assuming that one can resolve this by laying a ground >>> rod in the trench and terminating to that. >>> >>> Any other things I should watch for here? >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >> ------------------------------ >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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