In article ,
Gavin Gillespie wrote:
And if the conduit, or hole is badly restricted, solder the twisted
ends, not much chance of that coming undone.

Soldering weakens the copper due to heat. A properly made twisted joint
won't come undone before the cable breaks. I've used 'my' method hundreds
of times - it was taught to me by an old sparks.

--
*A nest isn't empty until all their stuff is out of the attic

Dave Plowman London SW 12
RIP Acorn