ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 4
Recent Posts
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
Bathroom electrical
by gfretwell. 08/14/17 02:05 AM
"Line level" audio on Cat 5?
by gfretwell. 08/08/17 10:39 PM
Fire alarm phone lines and color coding
by gfretwell. 08/08/17 10:26 PM
New in the Gallery:
Housebilding DIY wiring
Popular Topics(Views)
239,905 Are you busy
175,476 Re: Forum
167,760 Need opinion
Who's Online Now
0 registered members (), 46 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#216435 - 12/16/15 07:42 PM Internet bonding to sub-panel  
flitch  Offline
New Member
Joined: Dec 2015
Posts: 2
Western NY
Homeowner has Time Warner internet telephone cable direct to sub-building. Sub-building serviced by 4 wire 150A sub-panel fed from main 200A panel 100 feet away with ground rods located (1) at the main panel and (2) at the sub-panel, both bonded back to their respective ground bus. The sub-building has gas heat so the CSST pipe is bonded to the ground rod (for convenience) vs being bonded inside the panel. Can the internet cable be bonded to the same rod which would then make a loop of the internet cable directly from the sub-panel (via the cable) to the pole? Isnít this likely to be current surge problem for the internet cable fed devices.


2017 / 2014 NEC & Related Books and Study Guides

#216436 - 12/16/15 09:45 PM Re: Internet bonding to sub-panel [Re: flitch]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
More grounding is better in a surge situation. You want a single point ground on your side of the building entrance, preferably right where the main bonding jumper connects to the grounding electrode conductor (same bus bar). That should be where the inter system grounding bus lands. Any "loop" created on the line side is your phone company's problem and they are well prepared to deal with it. They reground their stuff at every drop.


Greg Fretwell

#216442 - 12/18/15 03:31 PM Re: Internet bonding to sub-panel [Re: flitch]  
flitch  Offline
New Member
Joined: Dec 2015
Posts: 2
Western NY
Thanks, Greg.



Member Spotlight
Trumpy
Trumpy
SI,New Zealand
Posts: 8,217
Joined: July 2002
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.014s Queries: 15 (0.003s) Memory: 0.7519 MB (Peak: 0.8747 MB) Zlib enabled. Server Time: 2017-08-18 16:16:13 UTC