ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Upgrade the old panel
by sparky. 08/20/18 07:26 AM
IRC M1307.3
by gfretwell. 08/18/18 09:08 AM
Light Pole Grounding
by Mosfet74. 08/18/18 08:42 AM
Calling all Non-US members!! (Non-US only)
by Bill Addiss. 08/13/18 05:52 PM
depth of duckbank
by ghost307. 08/12/18 09:26 PM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 6 guests, and 20 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
bonding bushing #216079
09/25/15 01:19 AM
09/25/15 01:19 AM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
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
Re: bonding bushing [Re: watersparkfalls] #216080
09/26/15 09:25 PM
09/26/15 09:25 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,253
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
Re: bonding bushing [Re: watersparkfalls] #216091
09/30/15 08:56 PM
09/30/15 08:56 PM
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.

Re: bonding bushing [Re: watersparkfalls] #216140
10/12/15 09:05 PM
10/12/15 09:05 PM
Y
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 845
Michigan
Don't forget 250.97 2014 N.E.C. . Bonding over 250 volts to ground .


Featured:

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

 

Member Spotlight
renosteinke
renosteinke
Blue Collar Country
Posts: 5,316
Joined: January 2005
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
248,646 Are you busy
186,383 Re: Forum
175,871 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.016s Queries: 15 (0.004s) Memory: 0.9599 MB (Peak: 1.0940 MB) Zlib enabled. Server Time: 2018-08-20 15:08:20 UTC