I don't know if the sound of snoring would have the same effect on the mind as a mechanical noise.
Are the plugs 15A? And no fuses in them?
The subway can cause ground currents, it is often found that metal water pipes corrode more quickly near an electric train line, especially if it travels around an area (sort of U shape)
You can of course make the bulb light up by putting the switch in either line, but if you put it in the neutral line, it means the live to the light socket is always live, which is dangerous, and will also make worse the problem you want to cure.
On trains, we lived in an area where the main road dropped 1000ft in 5 miles, obviously the trains could not follow that route, but they still had a fairly steep descent, and we used to get a very distorted sine wave when they were going downhill, they use regeneration as one method or braking. They were also on a mainly separate system, but it had to be tied into the grid at points to get power.
Are the plugs 15A? And no fuses in them?
The subway can cause ground currents, it is often found that metal water pipes corrode more quickly near an electric train line, especially if it travels around an area (sort of U shape)
You can of course make the bulb light up by putting the switch in either line, but if you put it in the neutral line, it means the live to the light socket is always live, which is dangerous, and will also make worse the problem you want to cure.
On trains, we lived in an area where the main road dropped 1000ft in 5 miles, obviously the trains could not follow that route, but they still had a fairly steep descent, and we used to get a very distorted sine wave when they were going downhill, they use regeneration as one method or braking. They were also on a mainly separate system, but it had to be tied into the grid at points to get power.