Phone Systems

Previous Thread
Next Thread
Print Thread
Rate Thread
Grounding 25 pr. circa protection? #474740 10/14/08 04:55 PM
Joined: Nov 2006
Posts: 695
ATechguy Offline OP
Member
OP Offline
Member
Joined: Nov 2006
Posts: 695
HI! Again , quick question to the pros if the building electical goes to main water pipe and i am 120 ft. away from main ground, can i find a closer water pipe to run a # 6 gound for the circa protection?? Or do i have to run a large cooper wire to main ground in electrial room??The building trusses are not grounded. eek

Telephone Equipment Search
Re: Grounding 25 pr. circa protection? #474741 10/14/08 05:16 PM
Joined: Feb 2005
Posts: 12,005
hbiss Offline
Member
***
Offline
Member
***
Joined: Feb 2005
Posts: 12,005
Drive an 8'x5/8" ground rod at the protector location. From the protectors and that ground rod run a #4 copper ground conductor back to the electrical room.

-Hal


CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
Re: Grounding 25 pr. circa protection? #474742 10/14/08 05:26 PM
Joined: Jan 2005
Posts: 14,907
EV607797 Online Content
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****
Online Content
Moderator-Vertical, Vodavi, 1A2, Outside Wire
*****
Joined: Jan 2005
Posts: 14,907
Well, I'm not sure of the Canadian Electrical Code requirements, but I'm fairly confident that they are similar to those in the US.

IF, (and I mean that you will need to confirm this) there is a 3/4" or larger copper cold water pipe that is not insulated by some form of joint or plastic piping, you will be OK. Don't forget to check for plastic water meter housings. This pipe will be a superior bonding connection to steel building framing anyway.

Otherwise, proper integrity over such a distance would require something more like a #2AWG bond to go all the way to the electric service ground. This would be necessary to overcome resistance due to distance. The proper water pipe will save you this trouble and expense.

Still, it concerns me that the metal framing members are not bonded to the electric, water and gas (if present) facilities. You might want to double-check that and if it truly is the case, you should advise the building owner of this deficiency.


Ed Vaughn, MBSWWYPBX
Re: Grounding 25 pr. circa protection? #474743 10/14/08 05:44 PM
Joined: Nov 2006
Posts: 695
ATechguy Offline OP
Member
OP Offline
Member
Joined: Nov 2006
Posts: 695
Thanks guys,i did talk to the original electric contractor and he did confirm the the steel beam trusses are not grounded ,this is a 1 yr. old building, So if i can find cooper piping with no non conductor joints a can use this as the cheapest solution.?? Thanks

Re: Grounding 25 pr. circa protection? #474744 10/14/08 06:18 PM
Joined: Dec 2004
Posts: 5,679
KLD Offline
Member
Offline
Member
Joined: Dec 2004
Posts: 5,679
Watch yourself if the building is not grounded or bonded....not even cathodic protection. You don't want to become the better ground.


Ken
---------
Re: Grounding 25 pr. circa protection? #474745 02/07/09 10:43 AM
Joined: Sep 2007
Posts: 1,119
Noisycow Offline
Member
Offline
Member
Joined: Sep 2007
Posts: 1,119
75% of the OSP enclosures and 90% of the data racks I see here are not grounded at all.

Trying to put together a 'grounding kit' right now so we have what we need on hand at any job, hopefully. Can't depend on, or wait for, a sparkie to provide a ground.

Re: Grounding 25 pr. circa protection? #474746 02/07/09 02:16 PM
Joined: May 2007
Posts: 4,716
Silversam Offline
Moderator-1A2, Cabling
*****
Offline
Moderator-1A2, Cabling
*****
Joined: May 2007
Posts: 4,716
Noisycow -

Recognize that there are 2 kinds of grounding:

1 - for safety
2 - for performance

For safety related grounding refer to the NEC

For performance related grounding refer to the EIA/TIA 607 spec. Panduit also has a nice set of grounding equipment and practices for data centers and the like.

Sam


"Where are we going and why are we in this hand basket?"

Moderated by  EV607797, Professor Shadow 

Search

Most Recent 5 Post
Dterm 80 Blinking Extension
by wetnoodle50 - 02/20/20 08:41 PM
Mitel 3000 programming cable
by Biztel Cuban Okie Tech - 02/20/20 07:24 PM
OXO voicemail busy
by Keyset6 - 02/20/20 01:54 PM
4 Tech Communications
by roldan - 02/19/20 08:49 PM
NEC Cordless Phone Audio Issues
by teldata1 - 02/19/20 08:43 PM
Who's Online Now
34 registered members (Ruben, wetnoodle50, aswipay, Biztel Cuban Okie Tech, jab1780, Yoda, Garbleduser, justbill, Not_sirius, Curlycord, mongo5150, Touch Tone Tommy, STS E, Keyset6, phonemeister, KRRath, mike b, gelehu, Russ Micheli, wmelliott, teletron, jsaad, vicbob, MooreTel, Carl Navarro, R4+Z, erniejoey, Skunky, metelcom, dexman, usedphones, EV607797, newtecky, pvj), 889 guests, and 182 spiders.
Key: Admin, Global Mod, Mod
Popular Topics(Views)
Forum Statistics
Forums94
Topics93,480
Posts634,513
Members49,240
Most Online5,661
May 23rd, 2018
Today's Birthdays
bevcomm21, Ironhedz, Nikola, phone guy bruce, SamsungExpert, Sbarron, Skippie9696
Newest Members
kosta543, wetnoodle50, minion2.0, robmar, EasternOffice Ma
49240 Registered Users
Get Tech Support Now! Click the banner below
Get Tech Support Now!
EMP & Lightning Home Surge Protection
EMP - Click Here!
Top Posters(30 Days)
dexman 35
Jeroen 20
Ruben 19
OBT 17
pvj 16
RESPONSIVE WEBSITE DEVELOPMENT
Bluewater Sailing
Become a Patron! https://www.patreon.com/bePatron?u=5256033
Buy one Get one FREE when you use PayPal at checkout! Code T28P
Yealink $39.95 Buy one Get one FREE when you use PayPal on checkout! Code T28P
EMP Shield for Commercial - Home & Vehicle
Use Coupon code SAVE - Click Here!
Servpro Ventura 24-Hour Emergency Service
Free Estimates call us now 24Hours
Contact Us | Telephone System Tech Support | Terms of Service

Sundance Communications is not affiliated with any of the above manufacturers.
©Copyright Sundance Communications 1998-2020
Trusted Partners