Kitz Forum
Chat => Chit Chat => Topic started by: Weaver on March 13, 2019, 05:54:17 AM
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When Openreach engineers remake a bad joint, say it’s high-resistance or corroded or whatever, what exactly do they do to remedy things? I can think of lots of obvious possibilities of course. Cutting a short distance off the ends or the conductors or filing corrosion off - is that right? And then what after that, how is the joint re-made? Are gel-crimps used now by OR?
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A typical joint closure will contain "tails" (i.e. the cable innards with the outer sheath removed) possibly twice the length of the physical body. There will be more than enough length to remake a defective joint.
Basically the existing gel-crimps would be cut off, the tails inspected and then new gel-crimps fitted. There are numerous types of joint closures . . . the current types are designed to be re-enterable and all are waterproof.
Here's a data sheet (https://www.millsltd.com/media/datasheets/Data%20Sheet%20MJC.pdf) for one type of joint closure . . . the first that I could find.
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Do the tails need to be filed before insertion into the gel crimps?
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No preparation is required other than ensuring the wires are clean, dry and corrosion free. The insulation does not need to be removed as gel-crimps are just IDCs within a deformable casing filled with petroleum jelly (essentially "Vaseline").