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/sci/ - Science & Math

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>> No.15157724 [View]
File: 1.78 MB, 3264x2448, pressure switch2.jpg [View same] [iqdb] [saucenao] [google]
15157724

How does electricity work? I posted a bread on /diy/ but asking here too in case /sci/ knows more. I want to understand hot vs neutral wire, and why there are two ground wires to my pressure switch instead of just one. Full details of my question here: >>>/diy/2550788
thanks

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