MDF / IDF Bonding and grounding

[Fly-Guy5]

Hello,
I'm a 10 year aprentice electrician and Bicsi cabling dude.
My question relates to Grounding and bonding in a new MDF I am working on.
The building is a 911 call center and has a large radio tower.
The MDF has a raised floor, 2 cabinet network data racks, 1 open 2 post network rack cor the Motorola tower radio communucation equipment and a second enclosed rack for radio equipment.
I had the electrician bond the raised floor to the a TMGBB.
I installed cable tray along the wall and out onto the top of my network cabinets and the 2 post radio cabinet ( the smaller enclosed radio cabinet is not in place yet) and bonded the tray and cabinets to the TMGBB.
I bolted the tray directly to my network cabinets and to the 2 post radio cabinet.
All according to ANSI/J-STD-607, TIA-942 and IEEE Std. 1100-2005 and the panduit grounding and bonding training.

Now, The Motorola tech wants me to remove the tray from touching any of his equipment (6"away) and wants me to remove it from my racks (6") so no cable tray touches the racks according to his Motorola specs?
The tray is still bonded to the bus-bar.
The racks are all bonded to the Bus-bar.
His radio tower cables enter the room and then go to overcurrent protection modules and bond to a bus bar that has a #4 running accross the room to the TMGBB.
The racks and floor are all bonded to the bus-bar.
What is the reasoning and code that would have me unbond the tray from the racks???
I think he or Motorola is bonkers..

Thanks

 

[don_resqcapt19]

Motorola has a pretty extensive document (about 500 pages), "Standards and Guidelines for Communication Sites (R56)" that they usually reference and insist on being followed. I do not have a copy, but they should be able to provide one for you. Often their proposals state that if that document is not complied with, the warranty is void and they will not provide a service contract.
I don't know what it says about your installation.

 

[ActionDave]

What is the reasoning and code that would have me unbond the tray from the racks???
I think he or Motorola is bonkers..

Thanks

That makes no sense. The motorola standard that don_resqcapt19 referenced requires everything to be bonded to everything times ten. The tech needs to go study his own company manual.

 

[Fly-Guy5]

Going back on site today

Going back on site today

Well, Today I go back on site to remove my cable tray from my own racks to make Motorola happy. Somehow he convinced the client that he is right. So my racks are bonded to the same bus bar as his his racks, the tray, the raised floor and the halo grid along the ceiling. But lifting the tray makes sense???
Thanks