I did a job a few years ago at a local college building here in town, and the entire panel located on one floor of the building had green wires on ALL the breakers. Now that was a mess! The first day I had to unwire some walls so they could be taken down boy to my surprise when I found all the grounds in the boxes and they were hot! Must have been a BIG sale on green wire back in the late 1960's here.
