Why would light switch manufacturers write the words on and off on their switches? Is it not obvious if the light is on or off? - Quora

Why are wires in both sides of a light switch hot, no matter if it is on or off? - Quora

Which is on and which is off in the I/O switches? - Quora

Can I convert a 3 way lighting circuit into a 2 way circuit and eliminate one of the switches? - Quora

I flipped my light switch in and it made a crackle noise and the light flickered. What causes this? - Quora

Why do most light switches point up when the light is on and point down when the light is off? - Quora

How to wire a three prong toggle switch with only a white and a black wire - Quora

What is disconnect switch used for? - Quora

Why do US light switches work in the opposite direction to those used in the UK? - Quora

How come some homes have two light switches next to another but only one works? - Quora

What does the “O” and “I” mean on a switch? - Quora

Why do some switches require a neutral wire? - Quora

I have 2 light switches controlling a single light, but they do not operate correctly anymore. Can you give me a way to determine which one needs to be replaced? - Quora