I’m trying to replace a very old outlet in my kitchen. The garbage disposal and the dishwasher are plugged into this outlet. The top outlet is switched, but the bottom is always hot. Everything I’ve read about this type of outlet has both circuits sharing a single neutral, but this outlet is odd. It has a single neutral from one circuit plugged in on one side, then on the other it has the two hot wires with the broken tab (as you would expect). The weird thing is that there is a second neutral wired to the same terminal as the hot wire for the first circuit. [see below illustration]
My question is what is going on here? At this point I’m not even really concerned about replacing the outlet, I just want to know if it’s even safe to put it back like this?
[ || ]—————-H2 [ ——N1-[ || ]======H1/N2