A friend of mine just got called by a new homeowner who roughed-in his own place - with 10-2 UF - yes, no kidding - This guy heard that 12 is better than 14 gauge, so he went one better and used 10 - Now comes the problem on trim out - the guy called my contractor friend because he can't get any devices to fit - lol - How would you like to fit a GFI in a single gang with 10 gauge UF - yikes