Bare ground wire used in Communication Closet

[Eric Fairchild]

I am looking for advice on the use of bare ground wire from a telco termination box, or BET ( building entrance terminal). The OSP telco cable is bonded to a ground buss bar inside the BET and then a bare #6AWG is run to the TMGB on the backboard above the BET. From the TMGB I have another #6AWG that is run through an exterior wall and then bonded to an Earth Electrode. Can anyone tell me what is wrong with using the bare #6 in this situation. It appears that I am in violation of NEC 800.100, (A),(1). If this is a safety issue then I must bring to everyones attention that the BET is all metal and will be energized if a lightning strike hits the OSP cable. Any advice will be greatly apprecieated.

 

[tom baker]

The bonding jumper must be continuous. You use a transformer split bolt at the bus bar and continue on to the GE system
And you must bond the building GE system, not just an isolated electrode.
You want to bond all metal objects together. then in a lighting strike the voltage will all increase and there will be no difference in potential and hence no current.

 

[izak]

sorry, apparently a code making panel knew that you had a bunch of solid wire in your closet, and made this rule up last month...

maybe it has to do with the particular installation..

its funny, its called a grounding conductor in 800... but elsewhere its always :
Equipment grounding conductor
or,
Grounding Electrode Conductor

i wonder why its different...
most electricians deny that 800 even exists

"its LOW VOLTAGE!!! theres NO CODE on LOW VOLTAGE!!!"


Yeah Right

 

[tom baker]

Izak I hadn't noted the difference in terms.
And you are partially righti, there is no low voltage article, as there is a defintion of low voltage in Art 551 RV vechicles
But the two true low voltage articles don't use that term in the title:
Art 411
Art 720

 

[Pierre C Belarge]

Actually I think they are using the term "grounding conductor" properly.
There is a definition of grounding conductor in Art 100. The grounding that is discussed in 800.100 is not equipment grounding, but grounding of equipment, which is what the definition of grounding conductor relates to.