Raceway bonding

[Pok3r]

Am having to go back and remove flex conduit for either cable glands or connecting a rigid conduit with a ground lug to bound to the race ways.. there is over 1000 flex conduit that are not properly merging to the race ways.. can any one give me some feed back on where can i find the proper ways and ideals on how to work with this?

 

[roger]

Are there bonding bushings in the equipment enclosures?

Roger

 

[ptonsparky]

View attachment 17673

Will these work for you?

 

[Pok3r]

the whole project is like this, with out a bounding bushing for the equipment, liquid tight flex from the equipment to the cable tray without the proper transition UL listed material.. the main problem is that the flex is not bounded to the cable tray.. at the end of the flex they have the flex with a white bushing for rigid conduit..


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[Strathead]

Are there bonding bushings in the equipment enclosures?

Roger

I think Roger is on the right track here. From what I am seeing I would have to agree with the inspector. Too bad it wasn't noticed before hundreds of installations. That said...

If the means of attachment to the equipment satisfies NEC 250. Obviously this means satisfies your inspector. If it does then a bond wire between the equipment and the cable tray should be sufficient. If it doesn't then a ground bushing in the enclosure with a bond wire from the equipment, through the bushing through the flex and bonded to the tray should satisfy Article 250. If it is a code issue, not a specification issue you are dealing with, I would require a written ruling from the AHJ to tell me why it wouldn't be enough.

 

[Pok3r]

So now we are almost redoing the entered site by disconnecting everything and putting a piece of rigid conduit on the flex with a ground lug bushing


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[Pok3r]

Where or how can i determine whats does need to be change and what doesnt? Is there a code stating any of this


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[augie47]

My 2 cents worth. The LFMC can not be used as an EGC for circuits that size but you have grounded the equipment by use of a separate equipment grounding conductor so all we need to address is bond the flex. To me possibly one of the fittings ptonsparkey showed or they make a "split" bonding busing which you could add to the sealtite and install a bonding jumper to the EGC via a split bolt or to the cable tray if its a listed ground,.
No connections would need to be broken.

http://www.garvinindustries.com/fit...shings/sgb50?gclid=CL_P8KrkndQCFYIjgQodE5YD0w

 

[Strathead]

OP, read what Augie wrote. We are speculating because we don't have all of the information. To answer your last question, yes there is a place to go for the answers. Sorry to be snarky, but it is the NEC. We are assuming that the reason you are "correcting" these issues is that you have an inspector and he is requiring something. If that is the case, then it greatly matters, EXACTLY what he is saying is not code compliant and he is responsible to provide the code section or sections that are applicable. Armed with that information you can proceed with figuring out the most cost effective way to address this, or point out to him or the Authority Having Jurisdiction, how you are in fact, complying with the code.

Until that time, everything that I say can be taken with a grain of salt and I think many of the more elevated minds here would tell you the same thing. We can't make unequivocal statements without all of the information.