..We were roughing in an addition, and at the top of the staircase was my 2-gang box with 2-3way switch legs, as well as the feeds...well, the studs were open, and nothing prevented anyone from seeing what was stapled on the studs..I'd used "3M stack-its" and was well within my 1-1/4" from stud edges...anyway this yutz comes drilling through with his bell-bit,and goes thru not one, not two, but all 3 of my wires I had painstakingly run upstairs from the switch location down below...I WAS LIVID!!! I then told the HO what happened, and re-ran the lines again,..this time as an EXTRA!!!
