Recently I was told there is even 10mm2 solid!
Bending that must be a real pain!
Thanks heaven the main fuse panel I was working on back then was pretty much empty (it had space for I think up to 4 3ph connections but only had two single phase circuits). Still... the old Diazed fuse blocks have terminals like US sockets where you gave to wrap the wires around the screws. That was something to do with 6mm2 solid...
I never saw the need of twisting stranded and solid using Austrian materials unless you're trying to do a "russian" connection wrapped with tape and buried in plaster. Light fixtures were also often connected that way back when other countries used porcelaine choc blocks.
