3 ms·

Thanks for the insight! I wonder if ability to resist creep[0] has ever been much of a goal when formulating wire insulation. Or is this "plastic flow" a differ

by mohn 7y ago

Thanks for the insight! I wonder if ability to resist creep[0] has ever been much of a goal when formulating wire insulation. Or is this "plastic flow" a different phenomenon than creep? For installations that are intended to be long-term (inside walls, buried under ground or concrete, etc.), it seems like the failure mode you describe would be really annoying to fix. [0] https://en.wikipedia.org/wiki/Creep_(deformation) https://en.wikipedia.org/wiki/Creep_(deformation)

chadcmulligan 7y ago
Most cables had "spare pairs" in case problems occurred. In a hundred pair cable, there'd be 10 unused for example, and if a short / open developed somewhere then you'd use a spare pair. I remember there was a procedure for replacing a cable in a form (the tied set of cables), but not something I ever did, they were in the process of phasing out lacing when I started and I only did it for a few years, there were these new things called "microprocessors" which seemed interesting.