[G6Tanuki]

I was always taught that tinning stranded wire which was then fitted to a screw-terminal was utterly deprecated - the problem being 'cold flow' in the solder.
If I find any such tinned-strands-to-a-screw-terminal in stuff I'm certifying - it won't even be allowed to taxi, let alone fly.
If you want to neaten up stranded wire before fitting to a screw-terminal, crimp on a "bootlace ferrule".