What do you do if you or one of your crew messed up and install 12 Ga romex instead of 14 Ga. in part of a 15 amp circuit? (This is in a new house).
It was just a 12/3 traveller cable between switch boxes in a 2-way switch circuit, but I had the guy pull it out and replace with 14/3. It only took a few minutes.
My reason was that, on the outside chance that an inspector notices, I don't want him worrying that maybe we're sloppy, and maybe somewhere else we used 14 Ga as part of a 20 amp circuit.
In this case, I wanted the new helper to understand the importance of "staying tuned" to what he's doing.
I'm going to try a tip I heard a while back, on jobs where I have a helper, to use different color spray paint to mark the 12 and 14 ga coils of wire, before we get out on the jobsite. Red for 12, yellow for 14, a few stripes from the inside to outside of each coil.
What do you think?