Original poster: Ed Phillips <evp@xxxxxxxxxxx>
I've heard people assert that solid-core stuff needs
to be used, but a friend of mine just built a large
slide choke using #6 AWG stranded (of the sort found
on the shelves of Home Depot and the like) and we
pushed about 160A through it at 240V."
    #6 is #6 is #6, at least at 60 Hz.  Can't make any difference.
Ed