I'm not sure what you mean. If one puts T+E through a standard stuffing gland, the tighter one does it up, the more it changes from flat to round (externally) - but I have no reason to believe that any of the conductors, or their insulation, has suffered significantly as a result.
... and in most cases drill a drain hole as in the real world water nearly always gets in somehow. Ive found many faults where the water has been sealed in by the overzealous glands and gaskets
Yes, but as I've just written, have you ever seen or heard of a case in which this 'strangling has significantly harmed the conductors and/or their insulation? If you compress T+E sufficiently brutally with a metal tool (or vice, as I once saw demonstrated!) then it is possible to push the conductor through it's insulation, but I don't think you'd ever achieve that, or anything like it, when tightening through a 'rubber bung'.
That was a question for Iggefer, early days here people condemned when they see stuffing glands in Dist board pics, however I beleive its better to bush the hole with a gland than a crap rubber grommet personally
It gave it a little squeeze, but nothing I would be too worried about. No more deformed than when you have to put a right angle (ish) bend in it when clipping.
I also think it's better than a grommet, which does next to nothing in a clean plastic hole anyway
Your right john, I quess its rare for a gland
.
However on a similar vane we do superstores and FP is often shoddily run in across floors and ive found cables, where run over by pump trucks the earth has took off the live or neutral insulation, shorted, tripped RCDS blown up even, yet outer sheath undamaged though squashed.
I assume its made worse as unlike T+E single core earth, FP has stranded earth and I quess acts like a Rasp File literally wearing through the inner insulation
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