ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Questioning the electrical norms
by gfretwell - 03/03/21 06:05 PM
Lock-down Thread
by gfretwell - 03/03/21 12:38 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (gfretwell), 20 guests, and 18 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
bonding bushing #216079 09/25/15 12:19 AM
Joined: Mar 2005
Posts: 236
watersparkfalls Offline OP
Member
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
Re: bonding bushing [Re: watersparkfalls] #216080 09/26/15 08:25 PM
Joined: Jul 2004
Posts: 9,571
G
gfretwell Online Content
Member
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
Re: bonding bushing [Re: watersparkfalls] #216091 09/30/15 07:56 PM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline
Cat Servant
Member
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.

Re: bonding bushing [Re: watersparkfalls] #216140 10/12/15 08:05 PM
Joined: Mar 2003
Posts: 849
Y
Yoopersup Offline
Member
Don't forget 250.97 2014 N.E.C. . Bonding over 250 volts to ground .


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
RonKipperDatacom
RonKipperDatacom
Kansas City, KS
Posts: 30
Joined: January 2013
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
275,594 Are you busy
209,512 Re: Forum
196,884 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3