I have an older home (1959) that I'm working on replacing the all the 2-prong outlets with GFCI (ungrounded). When I opened this particular 2-prong outlet I found something I don't understand.
The black (presumed hot) is wired on what I'd expect to be the line terminal, whereas the white (presumed neutral) is wired on what I'd expect to be the load terminal. I've attached pictures.
Why would this be done? Is it a mistake by the previous electrician/owner? Does it represent any greater hazard than 2-prong outlets already present?
I noticed that the metal plate under the terminals is a single plate, effectively joining the two terminals (you can see this on the attached picture of the black wire), does this mean there is no concept of line/load on old 2-prong outlets (or at least on this one)?