ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
Another generator question
by gfretwell. 09/21/17 02:41 PM
What do you do?
by gfretwell. 09/21/17 02:33 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 09/15/17 11:37 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,859 Are you busy
176,616 Re: Forum
168,530 Need opinion
Who's Online Now
0 registered members (), 29 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#216079 - 09/25/15 01:19 AM bonding bushing  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 220
Washington...Not DC
what is the code article that specifically states where and when bonding bushing is required for transformers?
I am installing a transformer with concentric knockouts that
I won't knock all out, usually I knock out my own eccentric and don't need one.

I beleive it is only required on the load side?

What if I bond XO at panel where I punch my own, would I still need one in x-former?

Thanks,
H20


2017 / 2014 NEC & Related Books and Study Guides

#216080 - 09/26/15 09:25 PM Re: bonding bushing [Re: watersparkfalls]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,115
Estero,Fl,usa
I think the general rule you use bonding bushings on raceways containing unfused conductors like services. I suppose if you have a transformer secondary conductor before it gets to the first O/C device it should have bonding bushings but I am not sure that is code.


Greg Fretwell

#216091 - 09/30/15 08:56 PM Re: bonding bushing [Re: watersparkfalls]  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
I think Soares is the source of this.

I think in terms of the bonding bushings being used on the 'service' side of any separately derived source, over that portion where the 'ground' is lacking and before the neutral bond.


#216140 - 10/12/15 09:05 PM Re: bonding bushing [Re: watersparkfalls]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 826
Michigan
Don't forget 250.97 2014 N.E.C. . Bonding over 250 volts to ground .



Member Spotlight
Posts: 165
Joined: March 2007
Show All Member Profiles 
Featured:

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

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 15 (0.003s) Memory: 0.7611 MB (Peak: 0.8941 MB) Zlib enabled. Server Time: 2017-09-22 11:44:59 UTC