I live in a rental and just replaced the single pole light switch in my bathroom next to the shower and sink. The neutral had never been hooked up. How dangerous was that?
A switch just switches a hot leg, not a neutral. If the neutral is the return from whatever was switched, it shouldn't have worked in the first place. Hard to say without more details.
it was one of these, where the 2 wires go in and then there is a green screw. The bare copper wire was inside the wall, but not hooked up to the switch. It had a loop in it like it used to be at one time...it's a 3 bay with two outlets next to it.