A single-pole switch has only two conductor terminals. To one terminal, you connect the supply (hot) wire, and to the other you connect the load wire. All this switch does is interrupt or not ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.

I was reading up on a project and came across this link. It mentions that if a light fixture is between the switch and the panel it is common to switch the white and black wires to the right of the ...