this post was submitted on 09 Feb 2024
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Every normal electrical box in every house ive lived in has a white wire, a black wire, and an exposed copper wire. Every switch has always had a green screw that the copper wire goes around. The zigbee adapters all seem to lack a spot for the copper wire, which is meant to help protect electrical equipment and prevent fires during events like power surges and whatnot.
@semperverus
In European countries you only have live wire, never the ground, neutral in newer installations.
The switches don’t need ground as there is no exposed metallic component. Ground is needed where a human could be exposed to live (due to a fault) as it would trigger the breaker.