Don't touch switch
A friend of mine had his "shop" setup with one like that. He had gotten a load of flash bulbs with edison (screw( bases, and decided to wire all of them up to the "do not touch" switch. On many occasions we had left the room only to return with the person he had left behind in a somewhat blind and dazed look. He mentioned that it was "priceless".
Yes, I have plugged 120 volt kit (my case it was a tape recorder in the 60's) into 240 volt outlet. In my defense, I didn't know the outlet was 240 volts. I confirmed that it was by looking at the light bulb in a lamp socket. Of course I did "return to shelf" the item and didn't say many words about the incident. Oh, and yes, it was in the USA, and I was in the third form.
Biting the hand that feeds IT
