I believe this is a ground wire with no wire cover. Is this safe? : r/askanelectrician

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UltraPro Add-On Switch QuickFit and SimpleWire, In-Wall White Rocker Paddle Only, Z-Wave ZigBee Wireless Smart Lighting Controls, NOT A STANDALONE Switch, 39350

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I'm a handyman so I know electrical basics to replace fixtures and such but not the why. What is the point of these grounding screw? If there is a ground wire and

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