Grounding for static discharge protection

[Mporter4]

I have been asked to install several grounding bus bars inside some clean rooms at a phamasuticle plant in a class 1 div. 2 area so that they can attach grounding clips to totes etc for static discharge . My question is what size wire do i run back to the ground loop?



edited to reduce font size

 

[dana1028]

My question is what size wire do i run back to the ground loop?

No such "wire to the ground loop" is required. See 250.54 [By 'ground loop' I am assuming you are referring to the GES]

 

[don_resqcapt19]

The bonding between the points of product transfer is more important than a grounding connection in the prevention of static problems. The NPFA 77, Recommended practice on static electricity requires 10 ohms or less between the bonding points. However both NFPA 77 and the IEEE Green Book say that a resistance of 1,000,000 ohms or less will prevent the buildup of static. So guess any size wire that provides adequate physical strength would do the job.
Don