a wrote:
OK - I've read the bitter vitriol in here used to describe the use of the
push-in option when wiring electrical outlets, but is there any study
someone can point to that has tested the long term difference between the
screw terminals and the push-in variety? All I hear is anecdotal - kinda
like the resistance a few have for using PEX in plumbing.

Aside from 'personal experience', is there any data?


I think NEC banned 'stab' connections on outlets used with 12ga wire. I
don't know what data they used if any to make that change.
I always use 12ga 20Amp circuits. When I come across any 'stabbed'
outlets or switches I will go ahead and pull the wires out and use the
screws. I can never seem to make the release things to work so I end up
pulling hard while twisting back and forth.
If you do use the 'stab' connectors then I would use pigtails.
I prefer to use the 'back-feed' type where you put the wire in the hole
and tighten the screws. I am comfortable using those without pigtails.
The back feed type do cost more though, over $2.00 each.
Kevin