web statisticsweb stats Business Phone Systems Tech Talk Forum - VOIP & Cloud Phone Help

Business Phone Systems

Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Jun 2004
Posts: 4,552
Moderator-Comdial, ESI, Voicemail, Cisco
OP Offline
Moderator-Comdial, ESI, Voicemail, Cisco
Joined: Jun 2004
Posts: 4,552
I know this topic has been discussed ad nauseum in other forums, but I can't seem to nail down a specific topic that covers what I need (Search is not my friend today).

I'm looking for documentation showing specific requirements regarding sinking your own ground rod for grounding racks and other telecom/data equipment. My recollection is that the separate rod needs to be bonded to the electrical panel or ufer to prevent potential between the ground rod and the ground that's on the energized equipment mounted in the rack.

Can someone please straighten me out, with reference to code (electric, BICSI, etc.)?

Thanks!

Justin

Atcom VoIP Phones
VoIP Demo

Best VoIP Phones Canada


Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.

Joined: May 2002
Posts: 17,722
Likes: 18
Member
****
Online Content
Member
****
Joined: May 2002
Posts: 17,722
Likes: 18
This topic was posted a long time ago, but I believe it's still relevant.

Common bond was in the Bell System Practices, I'm not sure what all BICSI copied over, I know they did a lot of it, but all that could have changed. I'm not at all familiar with BICSI Standards. I would think common bond is still a followed practice. To me it's just common sense to have no difference in potential in the grounds.

EDIT: To add, I don't recall common bond ever being in the NEC.


Retired phone dude
Joined: May 2007
Posts: 5,058
Likes: 5
Moderator-1A2, Cabling
*****
Offline
Moderator-1A2, Cabling
*****
Joined: May 2007
Posts: 5,058
Likes: 5
Grounding & Bonding is covered extensively in EIA/TIA 607 spec. Unfortunately my copy of the spec is OLD (20th Century).

Google EIA 607 you should find plenty of good info.

Sam


"Where are we going and why are we in this hand basket?"
Joined: May 2002
Posts: 17,722
Likes: 18
Member
****
Online Content
Member
****
Joined: May 2002
Posts: 17,722
Likes: 18
So did BICSI adopt the ANSI Standard in it's entirety? I did know they adopted parts.

Good info Sam.


Retired phone dude
Joined: Jun 2001
Posts: 10,949
Moderator-Avaya
*****
Offline
Moderator-Avaya
*****
Joined: Jun 2001
Posts: 10,949
I was always tought the same as Bill, all grounds should be bonded to building or common ground.


Avaya SMB Authorized Business Partner. ACIS/APSS
ESI Certified Reseller/Installer
www.regal-comm.com
Joined: Jun 2004
Posts: 4,552
Moderator-Comdial, ESI, Voicemail, Cisco
OP Offline
Moderator-Comdial, ESI, Voicemail, Cisco
Joined: Jun 2004
Posts: 4,552
Thanks! The link https://www.psihq.com/iread/strpgrnd.htm provides pretty clear reference. If you're following NEC guidelines only, it would be enough to tell you my understanding is correct. I was challenged by a "fact" that BICSI did not speak to the need for bonding supplemental grounds to the building grounding system, and that BICSI was over and above anything the NEC said. If BICSI doesn't speak to it, it should for this very reason.

Justin

Joined: May 2002
Posts: 17,722
Likes: 18
Member
****
Online Content
Member
****
Joined: May 2002
Posts: 17,722
Likes: 18
So that tells me BICSI didn't adopt all the ANSI standards.



Retired phone dude
Joined: May 2007
Posts: 5,058
Likes: 5
Moderator-1A2, Cabling
*****
Offline
Moderator-1A2, Cabling
*****
Joined: May 2007
Posts: 5,058
Likes: 5
Justin -

The NEC covers Grounding and Bonding from a SAFETY standard.

BICSI, EIA/TIA/ANSI cover Grounding and Bonding from a PERFORMANCE standard.

B I G difference.

Grounding in the era of Steppers, XBar, 1A2 and the like was a lot easier then now. 2 or 3 volt imbalance won't effect a 1970 era phone system. But a "modern" VOIP system? It would hose it.

I worked for a company that was contracted by NBC to provide Telephone service to the Olympics in Russia (1984?). We opted to provide a XBar, because the question was raised whether a "new" electronic system (NEAX 22L) would function with the poor quality Russian infrastructure. Grounding was a major concern. Of course, because of Afghanistan we never got to do the job.


Sam


"Where are we going and why are we in this hand basket?"
Joined: Jun 2004
Posts: 4,552
Moderator-Comdial, ESI, Voicemail, Cisco
OP Offline
Moderator-Comdial, ESI, Voicemail, Cisco
Joined: Jun 2004
Posts: 4,552
Although the wording isn't very clear in EIA 607, it does say the same thing.

Justin

Joined: Nov 2011
Posts: 320
Member
Offline
Member
Joined: Nov 2011
Posts: 320


Here is a video from Mike Holt, this is talking about CNC machines but same would apply to any of our non-electromagnetically/digital equipment.

See the diagram at 15:00 for the quick explanation.


Moderated by  EV607797 

Link Copied to Clipboard
Forum Statistics
Forums84
Topics94,262
Posts638,696
Members49,757
Most Online5,661
May 23rd, 2018
Popular Topics(Views)
211,098 Shoretel
187,707 CTX100 install
186,794 1a2 system
Newest Members
BPopilek, Rich F, LewisR, TDKs79, Buttinset
49,757 Registered Users
Top Posters(30 Days)
dexman 18
Toner 14
TDKs79 8
Who's Online Now
2 members (justbill, Toner), 132 guests, and 243 robots.
Key: Admin, Global Mod, Mod
Contact Us | Sponsored by Atcom: One of the best VoIP Phone Canada Suppliers for your business telephone system!| Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers. Sundance Phone System Forums - VOIP & Cloud Phone Help
©Copyright Sundance Communications 1998-2024
Powered by UBB.threads™ PHP Forum Software 7.7.5