Thing or place you've worked on or in as an Electrician, with the vast wealth of knowledge and experience on here there should be some good ones. I will kick it off by saying about 6 -7 years ago I did some work on a 16th century coach house , it was supposed to be haunted but I never saw anything strange. The bedrooms were well sloping though, if you put a marble on the floor it would roll straight to the other side, it all leaned to the back of the building and was a bugger to sleep in. Also one of my regular customers who owns a little engineering company and that dates back to 18th century, well part of it at least.
It can also be a peice of equipment, doesn't have to be a place.
It can also be a peice of equipment, doesn't have to be a place.