Calvin Henry-Cotnam wrote:
Andrew Gabriel ) said...

You should not solder stranded wire prior to putting it into
a screw terminal. Solder creeps under pressure, so the contact
pressure will steadily reduce over time until it forms a bad
contact.


The only place I ever use stranded wire with screw terminals is in
a lamp, and I have on occasion tinned the end first.

I find the creep problem very bad and screws and stranded wire are
a bad mix. I have had a few instances where #14 or #12 stranded wire
was pulled through a conduit, so instead of trying to attach it to
a screw terminal, I would pigtail a short piece of solid wire to it
and attach it to the terminal.



The electric service panel in my house has long stranded ground wire
held in two places by bolts. I dont think its tinned though. It is
silver but I suppose it comes from the drop that way.




--
Thank you,



"Then said I, Wisdom [is] better than strength: nevertheless the poor
man's wisdom [is] despised, and his words are not heard." Ecclesiastes 9:16