Help me clear up my understanding of the wiring needed for the LZW31-SN dimming switch.
My understanding of a neutral wire is that it’s a return path to the power source. Therefore, many smart switches require a neutral wire because this allows the switch controller to stay on even when the light is off, because the switch controller and the light are on different paths.
My confusion is about the situation in which there is no neutral wire. How does the LZW31-SN work in this case? Does it remain on continuously even when the lights are off? And why does the lack of a neutral wire mean that a bypass should be installed at the light fixture when the draw is less than 25W? What does neutral/non-neutral at the switch have to do with power consumption at the fixture? As long as the bulb can work with 120V, what does it matter how little current it draws?
And one technical question: if there are multiple bulbs, does each one need a separate bypass?
Thanks in advance for your help!