Open and Closed Case
When we teach electricity to new techs we use a lot of “water” metaphors. We talk about volts like PSI, amps like flow and Watts like GPM. Even the word “flow” gives us a vision of water moving.
And then we talk switches and circuits and we say “open” to mean no path / no flow and “closed” to mean a path or flow.
That’s the opposite of water…
With water we “open” the tap when we want flow and close it to stop flow.
With a switch we “close” when we make a circuit and we “open” when we break a circuit.
It struck me that this may be one reason newbies struggle to grasp relays.
Or maybe I’m just overhinking it.