ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Fuse blower plug?
by SPSchuman. 07/20/19 05:02 PM
Baseboard Mounted Light Bulb Socket
by SPSchuman. 07/15/19 03:22 PM
Hunter Fan Recalls Brunswick 3 & 4 Light Fans
by Admin. 07/11/19 11:08 AM
Honeywell Recalls some Smoke Sensors
by Admin. 07/11/19 11:03 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 8 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
250.104(C) Bonding of isolated steel I-beam #185763
03/26/09 01:41 PM
03/26/09 01:41 PM
E
earlydean  Offline OP
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
I would like to read about your past practices and experiences with inspectors as regards to bonding of isolated and exposed steel I beams in otherwise wood frame construction. There is no way this steel may become energized, as no electrical item is mounted on it, nor is any wiring method attached to or even resting on it. Is it required to be bonded or not?


Earl
2017 / 2014 NEC & Related Books and Study Guides
Re: 250.104(C) Bonding of isolated steel I-beam [Re: earlydean] #185776
03/26/09 06:59 PM
03/26/09 06:59 PM
Y
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 849
Michigan
Can you give an Example say height , Location , ect.

Re: 250.104(C) Bonding of isolated steel I-beam [Re: Yoopersup] #185779
03/26/09 08:18 PM
03/26/09 08:18 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,094
Brick, NJ USA
Earl:
Perhaps the steel is mechanically connected to the earth??

In that case....yes...bond


John
Re: 250.104(C) Bonding of isolated steel I-beam [Re: HotLine1] #185783
03/27/09 12:44 AM
03/27/09 12:44 AM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,373
Estero,Fl,usa
That is what I usually associate with the beam that goes across the basement. Typically it is an 8x17# on lally columns and caught at each end in a masonry pocket. (up there in the frozen north)
No. I have never seen any serious attempt to bond it.


Greg Fretwell
Re: 250.104(C) Bonding of isolated steel I-beam [Re: gfretwell] #185790
03/27/09 12:32 PM
03/27/09 12:32 PM
J
JBD  Offline
Member
Joined: Jul 2001
Posts: 599
WI, USA
The NEC says if it is 'likely' to become energized, not if it is just 'possible'.

Should houses along the Gulf coast be built with roofs capable of handling 12" snow loads? Should houses in the far northern Midwest be built to survive hurricanes? Both conditions are possible, however neither is likely. Should nails used to hang pictures be grounded? Aren't they likely to become energized? If they weren't, why the restrictions an how close NM cable can be run near the front of a wall cavity?



Featured:

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

 

Member Spotlight
TOOL_5150
TOOL_5150
Bay Area
Posts: 61
Joined: August 2007
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
Popular Topics(Views)
257,145 Are you busy
192,968 Re: Forum
182,621 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.017s Queries: 15 (0.003s) Memory: 0.9692 MB (Peak: 1.1107 MB) Zlib enabled. Server Time: 2019-07-21 03:06:39 UTC