ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
MRI LED lights dimmer control replacement - wow!
by ghost307. 01/19/18 11:37 AM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
VDE 0100 to introduce AFCIs
by LongRunner. 01/17/18 10:32 AM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
1 registered members (Troy), 20 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
updating an ungrounded circuit #80396
04/07/02 12:52 PM
04/07/02 12:52 PM
U
umerleyd  Offline OP
Junior Member
Joined: Apr 2002
Posts: 3
Cleveland, Ohio
I've just recieved a quick accurate response to a question about a new meeting room circuit. I'll try for two. None of the branch circuits in the building are grounded and I want to ground my new circuits. I've found the main water pipe at it's entrance into the basement. The electric service into the building is located within a foot of this 1 1/2" copper pipe.The service disconnect is grounded to this pipe. I would like to run a #6 copper wire from this pipe above a dropped ceiling to a JB of my circuit about 20 feet away. I'd like to attach the new ground to my new circuit. Is this proper procedure. Thanks again

2017 / 2014 NEC & Related Books and Study Guides
Re: updating an ungrounded circuit #80397
04/07/02 02:32 PM
04/07/02 02:32 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
If you are installing a new circuit, you must install an EGC with the circuit conductors. The permission to extend an EGC to the water pipe is only for the replacment of old two wire receptacles with new 3 wire receptacles.
Don(resqcapt19)


Don(resqcapt19)
Re: updating an ungrounded circuit #80398
04/07/02 03:05 PM
04/07/02 03:05 PM
U
umerleyd  Offline OP
Junior Member
Joined: Apr 2002
Posts: 3
Cleveland, Ohio
I guess my next question is if I can install a new ground bar on the existing breaker panel. Can I run my #6 from the water pipe or a ground rod and can I then only run a ground wire from the breaker panel to the new circuit or would I have to install a new sub panel.

Re: updating an ungrounded circuit #80399
04/07/02 07:06 PM
04/07/02 07:06 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
The equipment grounding conductor must be connected to the grounded conductor at the service disconnect via the main bonding jumper. You must have a fault clearing path back to the grounded conductor. Just a connection to the water pipe or ground rod is not code compliant and would present a serious safety hazard.
Don(resqcapt19)


Don(resqcapt19)
Re: updating an ungrounded circuit #80400
04/13/02 11:22 AM
04/13/02 11:22 AM
T
tdhorne  Offline
Member
Joined: Mar 2001
Posts: 345
Maryland, USA
Why do you need a new ground bar? Is there no ground bar now? The neutral buss in service equipment is also the ground buss. In panels that are not serving as service equipment the grounded current carrying conductors (neutrals) and the Equipment Grounding Conductors, or EGCs, must be kept separate and insulated from each other to avoid the current in the grounded conductor from taking stray paths that can cause a shock hazard or arcing. I take it from your previous postings that the panel is not the service equipment and that you have a separate disconnect feeding it. If I'M right read on if not supply the correct layout.


If you are going to run just one new circuit from a panel, that is not service equipment, that has only served raceway or metal jacket grounding paths in the past then you can just use a metal cable connector and a half inch bonding bushing to connect the Equipment Grounding Conductor to the grounded metal Cabinet of the panel. If you will be running multiple circuits with separate EGCs from that panel you should install a ground bar.
--
Tom


Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous for general use" Thomas Alva Edison

Featured:

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

 

Member Spotlight
dougwells
dougwells
kamloops BC Canada
Posts: 1,142
Joined: May 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 18
Potseal 14
Popular Topics(Views)
243,552 Are you busy
180,359 Re: Forum
170,837 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.025s Queries: 14 (0.005s) Memory: 0.9672 MB (Peak: 1.1049 MB) Zlib enabled. Server Time: 2018-01-19 19:03:10 UTC