ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
This Old House
by johno12345. 05/26/18 12:44 PM
Extension cords
by LongRunner. 05/25/18 12:19 PM
Fire source!
by LongRunner. 05/25/18 01:49 AM
Alternative income sources
by gfretwell. 05/24/18 10:07 PM
Furnace igniter leaking noise to stereo
by geoff in UK. 05/23/18 01:18 PM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 26 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Confusion with 250.90 (2011) #216940
03/16/16 11:40 AM
03/16/16 11:40 AM
B
BigB  Offline OP
Member
Joined: Mar 2004
Posts: 725
Tucson, AZ USA
250.92(B) says bonding jumpers....shall be used around impaired connections..... and in the same paragraph goes on to say that standard lock nuts or bushings shall not be the only means for the bonding required by this section. I thought the second sentence referred back to the first sentence where jumpers are required around impaired connections. An associate says no, the second sentence refers to all connections on the utility side of the service whether impaired or not.

Further confusion arises in 250.92(B)(3) where it allows threadless connectors made up wrench tight. What is the difference if a threadless connector is used with a standard lock nut versus a threaded piece of RMC using standard lock nuts?

Last edited by BigB; 03/16/16 11:41 AM.
2017 / 2014 NEC & Related Books and Study Guides
Re: Confusion with 250.90 (2011) [Re: BigB] #216944
03/18/16 10:41 AM
03/18/16 10:41 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,967
Brick, NJ USA
BigB:

Utility requirements may be 'above and beyond' NEC rules.


John
Re: Confusion with 250.90 (2011) [Re: HotLine1] #216951
03/19/16 12:00 AM
03/19/16 12:00 AM
B
BigB  Offline OP
Member
Joined: Mar 2004
Posts: 725
Tucson, AZ USA
Originally Posted by HotLine1
BigB:

Utility requirements may be 'above and beyond' NEC rules.


Not our POCO. The only thing they are concerned with is their ability to access the meter for non-payment lockout and that their side is locked and sealed.


Featured:

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

 

Member Spotlight
Bill Addiss
Bill Addiss
NY, USA
Posts: 3,891
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
twh 7
Popular Topics(Views)
246,942 Are you busy
184,345 Re: Forum
173,548 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 15 (0.004s) Memory: 0.9509 MB (Peak: 1.0761 MB) Zlib enabled. Server Time: 2018-05-27 23:29:37 UTC