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Old 01-24-2015, 07:01 AM   #21
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Originally Posted by Dash Dingo View Post
I think what the op is trying to say that if he grounds only one switch out of four and if someone puts a metal plate on, then the plate and all the switches will be grounded then.
I see his point.

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However if it is a plastic plate then the screws from the other switches could get energized.

The problem is you cannot expect the metal plate to be there at all times. The nec cannot make rules for every situation so it is easier to give an all out rule. In some cases it may not be necessary but it would be necessary in other cases
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Old 01-24-2015, 07:44 AM   #22
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When the emphasis on speed takes precedence over compliance and safety, you're already too deep down the rabbit hole.
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Old 01-24-2015, 09:21 PM   #23
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Originally Posted by RIVETER View Post
Are we on the same page? He new that "all metallic components of an electrical system" must be bonded at ground potential but in the first sentence of the post...pissed it off.
Did you read only the first sentence?
Try looking at the whole post, at least the 2nd sentence.

Until someone decides to put a stainless plate on there, that is.
You've really got to start reading other words besides just "grounded/bonded"!
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Old 01-27-2015, 06:42 PM   #24
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Originally Posted by eds View Post
In a non metallic box why do I have to take equipment grounding conductor to each switch in the box. Why not just hit one switch with a conductor based on the largest wire in the box
in the 90s i would only hit one switch in a multigang box and let the metal plate ground the others.
Clean this mess up before we all end up in jail, the test tubes and the scale. Just get it all out of here. Is there gas in the car?
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Old 01-28-2015, 09:55 PM   #25
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Here's why you got to ground each switch. Besides the NEC says we have to. Which should be enough

Those switches are held together by plastic molding and a little metal frame. That little metal frame has the potential to become energized if the switch begins to fail. To avoid getting 120V or 277v to the little frame, which can put voltage to the cover screw, some genius put a little ground screw to keep people from getting buzzed or worse.
If it gets any better, I won't be able to stand it!
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