Rachit
Member
- Location
- Los Angeles, LA, USA
Per TIA-607-C Section 5.2.6:
Backbone bonding conductor (BBC) - When there are multiple TBBs (Telecom Bonding Backbones, the grounding conductor routed from a Primary Busbar in the MDF to the Secondary Busbar in the IDF), the BBC is employed to interconnect them through the associated busbars, either on the same floor in a multi-story building or in the same general area of a single story building.
I have highlighted the conductor in the attached PDF which is directly from the standard.
This brings up 2 questions for me:
1. Why?, What is the purpose in doing this?
2. Does this not contradict the NEC by creating a closed grounding loop?
Thanks for your help.
Backbone bonding conductor (BBC) - When there are multiple TBBs (Telecom Bonding Backbones, the grounding conductor routed from a Primary Busbar in the MDF to the Secondary Busbar in the IDF), the BBC is employed to interconnect them through the associated busbars, either on the same floor in a multi-story building or in the same general area of a single story building.
I have highlighted the conductor in the attached PDF which is directly from the standard.
This brings up 2 questions for me:
1. Why?, What is the purpose in doing this?
2. Does this not contradict the NEC by creating a closed grounding loop?
Thanks for your help.