Quote Originally Posted by Wade Lippman View Post
While I have had several "1"s fail, I have never had a "3" fail, and have never used a torque wrench. I just can't see why "3" would would be more likely to fail than "2".
Because you have 2 wires instead of 1 trying to torque the screw loose when the receptacle is pushed back in the box. Especially with #12 wire. I've personally seen it happen when installing one way back in the day.