Inspected a new home, (less than 5 years) the other day and ran across this. Power in the entire home was pulled in 12-2 w/ground, all general use circuits set on 20A breakers. Coming from an electrical background, I like that since everyone has so many electronics today. What I didn’t like is that on the lighting circuits that were visable, (unfinished rooms) the electrician pulled 12-2 w/ground for the power and 14-2 w/ground for the switchlegs to the lighting fixtures. Code states (in the year this house was built) that you can not run a 20A circuit on a 14-2 which is what is pulled to every light. When you put recessed cans on a circuit it makes that 14-2 run very long.
How would you write this up on a report? Or would you even mention it? Or am I letting my electrical background get in the way?