ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
IRC M1307.3
by gfretwell. 08/18/18 09:08 AM
Light Pole Grounding
by Mosfet74. 08/18/18 08:42 AM
Calling all Non-US members!! (Non-US only)
by Bill Addiss. 08/13/18 05:52 PM
Upgrade the old panel
by gfretwell. 08/13/18 12:20 AM
depth of duckbank
by ghost307. 08/12/18 09:26 PM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 3 guests, and 21 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Water pipe bonding #97868
04/06/06 06:02 PM
04/06/06 06:02 PM
T
tmegger64  Offline OP
Junior Member
Joined: Mar 2006
Posts: 7
Naples Fl.
While inspecting unit remodel in a multiple occupancy bldg I checked the bonding for the water piping system in the units panel. Traced the bond to the water heater of the unit. 250.104(A)(2) says in essence that if the system is isolated from all other occupancies by use of nonmetallic water piping then the above bonding is acceptable. The question arises: How do you know if there is nonmetallic isolation? You don't The building is old as the hills and who knows if the metal piping system has any isolated areas. So the real question is: If it is left bonded in the unit and there isn't any nonmeatlic isolation will it make a difference anyway? I hate to see the EC have to run a bond in an old building to the service.

2017 / 2014 NEC & Related Books and Study Guides
Re: Water pipe bonding #97869
04/06/06 08:23 PM
04/06/06 08:23 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Is this a bonding conductor required by 250.104 or a grounding electrode conductor for the service?
Don


Don(resqcapt19)
Re: Water pipe bonding #97870
04/07/06 06:15 AM
04/07/06 06:15 AM
T
tmegger64  Offline OP
Junior Member
Joined: Mar 2006
Posts: 7
Naples Fl.
It's the bonding conductor per 250.104 for the water piping.

Re: Water pipe bonding #97871
04/08/06 01:11 PM
04/08/06 01:11 PM
L
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
The older the building, the less likely there are isolated sections of pipe.


Larry Fine
Fine Electric Co.
fineelectricco.com

Featured:

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

 

Member Spotlight
Tom
Tom
Shinnston, WV USA
Posts: 1,044
Joined: January 2001
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
248,623 Are you busy
186,362 Re: Forum
175,828 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.015s Queries: 14 (0.003s) Memory: 0.9589 MB (Peak: 1.0889 MB) Zlib enabled. Server Time: 2018-08-19 09:43:45 UTC