I looked on the IAEI site and I can't find them but some years ago I submitted pictures of the horrors you can find under a computer room floor.
They showed up in the magazine twice. The basic problem is with FMC whips to Russell Stoll receptacles. Nobody really makes a suitable connector so the head pulls off, leaving the conductors exposed. These are 60-100a 3p so it can get exciting when one shorts out. I also had some where the FMC came untwisted.
Personally I preferred SO cord but the code made that go away in the 70s. At least there was a suitable connector.
I also had one where they tried to cram 8 #4s in a 1900 box, spliced with red wirenuts. Needless to say it didn't have a cover on it. You couldn't pack those wires in with a sledge hammer.


Greg Fretwell