I went to a house a couple of weeks ago to investigate problems with an extended light & ceiling fan circuit. I found that the previous "electrician" apparently only had one type of wire - a single cable (i.e. for onduiit use) in red.
Apart from single cables draped everywhere across the attic, it was fun trying to work out which reds were hot and which were neutral. He'd even used red for grounds, noth that it mattered much, because he'd carefully linked the fan and accessory boxes together, but not actually connected any of this wiring to a ground!
I only went there for a 20 minute job.....
