I'm in the US, Ohio if that matters.
I have an old house with many circuits still on K&T wiring. I haven't been able to find information on how to identify a neutral wire - most guides just tell you how to identify hot wires, and whatever is left must be neutral.
Some of my K&T wires are disconnected but still in the wall.
Is there a way to identify which ones are neutral vs the ones that are simply disconnected from the electrical box in the basement?