bonding electrical buss bar

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electricman8something

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I'm installing a 4x12x1/4" buss Bar in 4 different locations for bonding an ESD flooring system. A #2 copper wire is specked to attach back to the electrical panels ground system. Above the ceiling I can support in free air. But landing the $2 at their location 8" off floor I was going to use a 1" conduit to protect wire from getting knocked around. My question is do I need to use OZ Gedney Type GH-G conduit grounding clamp to attach to the buss bar and at 3 of the 4 locations I need to daisey chain 2 #2 can I Run 2 #2 in The 1" conduit or should I have a separate conduit for each. Thewn the final conduit going back to th electrical room I was going to use a conduit grounding clamp.
 
The NEC does not cover this installation. If the ESD is for static control, I see no reason to bond the conductor to the raceway. That is only required where the conductor could be called on to carry high current. That would not be the case for static control. Why did they spec such a large conductor for static control? The IEEE green book says that a path with 1,000,000 ohms of resistance or less will prevent the build up of a static charge.
Don
 
Somewhere along the line, someone got the idea that if a #20 wire is adequate for static control, a #2 is better. Never quite understood that.

Its like plants that decide they have a "bad" ground, so they run a 2/0 cable all the way around and bond it to everything in sight. No real benefit that I can see, but it is a common thing. I have actually seen them do it after the fact, and run a seperate 2/0 or so sized ground wire around the plant all by itself.
 
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