The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Topic Options
Rate This Topic
#113731 - 09/21/02 07:36 PM Topic: >> Public Water / Old Pump issues
Admin Offline

Administrator
Member
Registered: 10/07/00
Posts: 3190
Loc: NY, USA
Picture a situation where 'City Water' has been brought into a House (copper line) and the old Well piping disconnected, but the Ground Wire has not been moved from it's original location. What are the issues, what should be done and why?

Top
Tools for Electricians:
#113732 - 09/21/02 08:38 PM Re: Topic: >> Public Water / Old Pump issues
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
One suggestion — Although the wellhead seal looks decidedly nonmetallic, there may be one good reason for connections to both the casing and new municipally-connected feed—a metal well casing often makes an outstanding grounding electrode. The old 6-inch casing at my rural house measured <2&#8486; with a three-point test, and that is often considered “utility-substation grade.” {The equally-old ‘driven’ ¾-inch-pipe electrode was 65&#937;.}
Top
#113733 - 09/21/02 08:52 PM Re: Topic: >> Public Water / Old Pump issues
Bill Addiss Offline
Member
Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Remember now that the interior metal water piping is no longer connected to this well piping. What problems/issues does that present?

Bill
Top
#113734 - 09/23/02 05:18 AM Re: Topic: >> Public Water / Old Pump issues
jdevlin Offline
Member
Registered: 08/07/02
Posts: 402
Loc: welland ontario canada
Assuming there is no interconection between the old well head and the new city water a new bond needs to be added to the new water system.
Top
#113735 - 10/05/02 02:43 PM Re: Topic: >> Public Water / Old Pump issues
tdhorne Offline
Member
Registered: 03/22/01
Posts: 344
Loc: Maryland, USA
I would add a new grounding electrode conductor (GEC)to the new water utility entry piping. I would leave the present GEC in place. This would bond both systems to the main bonding conductor.
--
Tom
_________________________
Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison
Top
#113736 - 10/05/02 02:58 PM Re: Topic: >> Public Water / Old Pump issues
Bill Addiss Offline
Member
Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Thanks,

What hazards, if any, exist with the way it is now? What would you tell the owner of this house?

Bill
Top
#113737 - 10/05/02 06:30 PM Re: Topic: >> Public Water / Old Pump issues
sparky Offline
Member
Registered: 10/18/00
Posts: 5545
that the interior plumbing may be able to be energized due to a rusty bond...
Top
#113738 - 10/07/02 03:40 AM Re: Topic: >> Public Water / Old Pump issues
sparky Offline
Member
Registered: 10/18/00
Posts: 5545
not as prevelant in this particular pix, the white powdery buidlup we sometimes see , similar to battery connections is explained by Mark Ode in an article Here
Top

Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box

Recent Posts
Forum Styles
by Admin
Today at 02:08 AM
License exam
by TRUE POWER
Yesterday at 09:16 PM
Looking for older post
by sparkyinak
Yesterday at 12:27 AM
Members: Non-Members: Did you know?
by Admin
01/22/17 02:34 PM
Safety at heights?
by HotLine1
01/21/17 08:51 PM

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals