OK, I'm in on this one.....
Heads breaking off when torqued properly?
How do you get them off, if the heads break?
I mostly use crimps on anything over 8Awg stranded, no problems with torque and or conductor damage.
George, you as an engineer should already spec out the use of crimp connectors, the use of mechanical lugs should not be used IMO.
No having said that, when using solid conductors in say a resi panel, I doubt there is too much damage to soild conductors as one might expect. But I am sure it happens, when you tighten it like a gorilla.
"Tight is right", loose connections make heat and arcing.
Just my thoughts...
Dnk..........
