Bought a really old house and it seems like the color of the wiring is all over the place. I've seen a white wire used for hot on a receptacle and I've also have both white wires and copper wires screwed into the grounding bar on my circuit breaker.
I am looking to install a smart switch, so I need a neutral, but I want to confirm without a doubt that a particular grouping of wires is neutral and not ground, and i want to do it without relying on the color of the wire.
I am planning on going out to buy a multimeter from Lowes, and my plan is to see if I can use the continuity setting to somehow figure out if a particular wire is connected to a known neutral in a receptacle. Is there a better and foolproof way to do it?