R-56 standards for a 911 facility

[lhartig]

What is the grounding standard for a 911 facility. I am told a #6 550 strand is that correct?

 

[ron]

The last 911 facility I designed was a while ago, but I think I used NFPA 1221.
I don't recall anything too particular about grounding that I wouldn't do for any data center or call center.
http://www.nfpa.org/catalog/product.asp?title=Code-1221-2007-Public-Fire-Service-Communication-Systems&category%5Fname=Codes+and+Standards&pid=122107&target%5Fpid=122107&src%5Fpid=&link%5Ftype=category&src=catalog

 

[wisp_engineer]

It depends on what part of the facility you are talking about.


Consoles and what not are done with #6-stranded.

There is usually a buss bar in the dispatch center that your consoles will be bonded to. This is bonded back into the CEB room with #2 usually, where it interconnects to the rest of the equipment.


But again, it all depends on where you are talking. Don't you have a copy of R56?

 

[massfd]

R-56 is a Motorola standard for grounding and lightning protection of radio equipment. I have never found it on the web but think it is avaiable from Motorola parts dept.

It's a bit dated (old) but is still in use in the radio industry

 

[wisp_engineer]

R-56 was recently updated to reflect changes in the industry, such as the large-scale deployment of WIFI networks.
Part of R-56 covers dispatch center grounding and bonding,

R-56 is still widely used, by Motorola and their dealers or service centers.