ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
SCADA interview questions and answers 2019
by niamishra. 10/17/18 03:26 AM
DIFFERENCE BETWEEN SCADA AND HMI: AUTOMATION ACRON
by JoeTestingEngr. 10/17/18 12:51 AM
PLC/HMI Enclosure C2, D1
by ghost307. 10/16/18 03:31 PM
Tingle off the water spigot
by dsk. 10/15/18 02:36 PM
Board tester power supply?
by JoeTestingEngr. 10/13/18 12:14 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 29 guests, and 26 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
gas pipe used as grounding electrode #188087
07/21/09 11:38 AM
07/21/09 11:38 AM
C
Chris Rudolph  Offline OP
Member
Joined: May 2001
Posts: 160
Winter Park,Fl USA
I have updated the service,150 amps,breaker panel,and installed a new grounding system in a single family house with basement in Upstate New York.The inspector said all was done well except that I had to clamp the grounding electrode conductor to the gas pipe in the basement.
Is this a violation of NEC 2002 250.52 B 1?
Chris

2017 / 2014 NEC & Related Books and Study Guides
Re: gas pipe used as grounding electrode [Re: Chris Rudolph] #188089
07/21/09 12:28 PM
07/21/09 12:28 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,298
Estero,Fl,usa
That is not the ground electrode, it is bonding the gas pipe (250.104(B))
He also could have said you bond to the circuit EGC "likely to energize" the pipe. That will usually be the largest piece of electrical equipment connected to the gas pipe. (range electric igniter, furnace blower etc)
He might even say that was the A/C compressor via the freon line set to the A coil in the furnace. The safest alternative is the GEC, then all bases are covered.


Greg Fretwell
Re: gas pipe used as grounding electrode [Re: gfretwell] #188103
07/21/09 04:14 PM
07/21/09 04:14 PM
C
Chris Rudolph  Offline OP
Member
Joined: May 2001
Posts: 160
Winter Park,Fl USA
That sounds good to me because I had the GEC attached to the water pipe and a 8 ft ground rod that I had driven

Chris

Re: gas pipe used as grounding electrode [Re: Chris Rudolph] #188124
07/22/09 02:23 PM
07/22/09 02:23 PM
M
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
Chris
One reason to bond the pipe is in case it gets hit by lightning and brings the energy into the house. Here the gas pipes in the ground are plastic but some places are metal. The gas meters usually have a dielectric fitting to isolate the interior piping from the exterior. We always want the bonding connection on the house side of the meter and the gas company wants it there too. the dielectric fitting is to control galvanic corrosion on the underground gas pipes.


Featured:

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

 

Member Spotlight
watersparkfalls
watersparkfalls
Washington...Not DC
Posts: 222
Joined: March 2005
Show All Member Profiles 
Top Posters(30 Days)
sparky 11
Popular Topics(Views)
250,326 Are you busy
187,952 Re: Forum
177,488 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.017s Queries: 15 (0.003s) Memory: 0.9608 MB (Peak: 1.0945 MB) Zlib enabled. Server Time: 2018-10-17 09:55:47 UTC