communications ground

[jcole]

Hello Guys and Gals.

One of our departments recently moved to a multifloor building that have other tenants on the upper floors not associated with us. They had their own phone sytem installed by our communications dept. He said he needed wire connected to building ground. I assumed he meant grounding electrode system.

I installed a 10awg stranded wire to nearest building steel with a listed device.

Is there anything wrong with this installation per NEC or anyother code that may govern this? I my opinion, 800.100B(2)2 allows this.

What is meant by intersystem bonding termination per 800.100B(2)

Thanks for replies.

 

[don_resqcapt19]

...
What is meant by intersystem bonding termination per 800.100B(2)

Thanks for replies.

See 250.94

 

[jcole]

Thanks Don.

Duh. I remember talking about intersystem bonding requirements in CE now. I think that became a requirement in 2008 and we are still under the 2005 here. Do you see a problem with my install?

I was expecting him to say it had to be ran back to service and I wanted to be prepared with Code if he did.

 

[dbuckley]

As long as the ground is a safety ground, all will be fine.

If it's a functional ground, then it will be expected to carry currentts, and is part of the communications circuits, and so should be cpnnected to safety ground in such a way as to ensure the comms gear deosn't get fritzed.

Having said that, functional grounds in comms are dissapearing repaidly.,..