I didn't know that plumbers perforated tape was thick enough to provide the required protection. Learn something new everyday.

Never let plumbers touch wire. Also, never let the guy who did this installation touch wire. Infact,don't let anybody related to him touch wire either. In fact...

Well, when the homeowner wants to hang a shelf and his nails keep getting bent, he's just going to reach for a drill anyhow- this saves him the trouble!

There's more pics... take the 5 off the end and replace with a 1, 2, 3, 4.... Someone doesn't realize that outer sheathing is supposed to enter the box too!

Well as long as the sheetrockers have good aim...

I like this one

http://www.markbeiser.com/HVAC/WOS/electricalhacks/elektrishun2.jpg

So do those wires now have a free air rating?

Well, homeowners need to understand that when their nails don't penetrate and only get bent, that they are in fact hitting protective metal. That there's wiring or pipes behind it that could get damaged. And that they must give up on that spot, and nail elsewhere. And also not to use very long nails that they might happen to have a supply of...

Of course, being perforated tape, Murphy would make sure the nails went thru the hole and into the romex :-)