silverbullet52 t1_j5exubv wrote
Reply to comment by Inarus06 in Neutral line - Kasa smart switch install by Inarus06
Black is usually hot. Whether it's line or load I can't tell from a picture after things have been removed. Red would typically be going from a switch to an outlet or light. Or whoever did the original wiring ran out of black and used red. It happens.
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