ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Dimmable LED 2x4 lay in fixtures
by HotLine1. 04/24/17 05:43 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,661 Are you busy
169,369 Re: Forum
162,699 Need opinion
Who's Online Now
0 registered members (), 56 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#180811 - 09/11/08 04:11 PM Service Entrance Grounding  
thiggy  Offline
Member
Joined: May 2004
Posts: 24
B'ham Al
While examining my mother's fuse panel, I started wondering about the grounding system. Her house was built about 1960, and has a 100 amp fuse box on the inside basement wall, with a 100 amp cartridge fuse disconnect outside beside the meter. I noticed that the outside box has a bare ground wire which runs in to the fuse box, then up to the cold water copper tubing which runs above the fuse box. There is no ground rod driven into the soil. Is this an appropriate method of grounding the service panel? I wonder about the continuity of the copper plumbing, particularly where there is a pressure regulator in the line. Should this go to a ground rod in the soil rather than being clamped to the water system?


Work Gear for Electricians and the Trades

#180812 - 09/11/08 04:30 PM Re: Service Entrance Grounding [Re: thiggy]  
gfretwell  Online Content


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
Back when all water distribution was metal that was the best grounding electrode. The whole city was tied to the same equipotential grid. Now that everything is plastic that is no longer true so we have the requirement for the supplemental electrode. I would drive a rod and connect it to the panel. If there is any question about the conductivty of the pressure regulator (not all metal body) jumper around it.


Greg Fretwell


Member Spotlight
HotLine1
HotLine1
Brick, NJ USA
Posts: 6,809
Joined: April 2002
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.009s Queries: 15 (0.003s) Memory: 0.7438 MB (Peak: 0.8622 MB) Zlib enabled. Server Time: 2017-04-25 02:55:54 UTC