Metallic Covers / Plastic Boxes

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jim dungar said:
When a term is not defined in the NEC you need to go to a "standard" dictionary or thesaurus.

"Likely to become energized" could be restated as "Probably will become energized" or "To be expected to become energized".

In common usage, "likely" is almost never means "possibly".

Imagine the conversation
Employee: Can I take the afternoon off?
Boss: Likely

What does the employee think is going to happen?
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I don't think a metal switch plate is LIKELY to become energized... but I still ground my switches... :)
 
stickboy1375 said:
I searched all over the net... I almost opened up photoshop...:) but I coulden't find one... :(
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LMAO...you SHOULD have photoshopped one anyway :D


stickboy1375 said:
I don't think a metal switch plate is LIKELY to become energized... but I still ground my switches... :)
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The NEC feels differently: 404.9(B) ;)
 
Stick, you ground your switches because it's required by code. I've never seen where it said you had to ground a blank plate.

When we get into definitions I think we should always look at the real world. How many guys here are bonding the t-bar ceiling grid or the A/C duct work? I mean you have a bunch of 277v light fixtures screwed (bonded) to the t-bar grid and fixtures have been known to short out or as someone said a wire nut could fall off.
 
I do. I get the ceiling grid and the metal duck of the air handler with the equipment grounding conductor installed with the circuit supplying the equipment.

I also get the metal blank cover of a non metallic box with one of these.
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Bonding ductwork brings up an interesting question. Does anyone who is hitting the ductwork also follow the entire duct system and look for any of the flexible non-metallic joints, such as the ones coming up out of a A/C unit such as a Liebert, and install a bonding jumper across these joints?
 
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