Best way to fix steel channels to concrete wall (no-fines concrete)

[sparkwright]

Drawing a cable out of metal conduits of all ages might be done successfully and ditto installing a new one, I said "might" . On the very odd occasion I have done so i have only replaced with a sloppy fit blunt ended insulated AND sheathed cable and extremely carefully too, too risky really so best avoided except perhaps with very short straight runs and great care.

I had an idiot helping me do this, but it could have been done successfully.

 

[ebee]

Agreed, but even with care it can snag, the few i done were ok but ive witnessed plenty not even by skilled people