Why are the screws on the outlet plate grounded?


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Old 09-25-13, 08:23 PM
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Why are the screws on the outlet plate grounded?

Hi,

I have been wondering - why are the screws on the outlet plate connected to the grounding? They are exposed and potentially somebody could be touching them, while current go through the grounding (if it happens so). Isn't this dangerous?
 
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Old 09-25-13, 08:43 PM
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why are the screws on the outlet plate connected to the grounding? They are exposed and potentially somebody could be touching them, while current go through the grounding (if it happens so). Isn't this dangerous?
On the contrary, it's a safety feature. If the cover plate is metal, the entire plate is grounded.

It's done for the same reason grounded metal boxes are used for mounting devices. Both are usually specified in commercial work.

The path to ground is an emergency drain for any ungrounded potential ("hot power") that gets somewhere we don't want it. Would you rather have that drain open and at hand or clogged and obscured?
 
 

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