ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/19/17 01:02 AM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,404 Are you busy
177,370 Re: Forum
168,973 Need opinion
Who's Online Now
0 registered members (), 14 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#4602 - 10/05/01 07:17 PM panel  
stan  Offline
Member
Joined: Aug 2001
Posts: 37
ky
I was hooking up a ground wire in a panel and i seen a small spark when i touched it to the ground bar also i was tightning the screws on the neautral bar and my screwdriver touched the side of the panel and made a big spark is this normal??


Work Gear for Electricians and the Trades

#4603 - 10/05/01 07:39 PM Re: panel  
Anonymous
Unregistered

If your ground is bonded to the box and your neutral and ground are bonded somewhere in the service, then there can be no spark between the neutral bar and the box.

A ground which sparks is energized. That indicates a short, malfunction, or miswiring.

None of what you describe is normal.


#4604 - 10/08/01 02:17 PM Re: panel  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Stan,
Was this in the main panel or a sub-panel? There may be a small arc between the grounding and grounded conductor in a sub-panel due to the voltage drop that will occur in the grounded conductor?
Don(resqcapt19)


Don(resqcapt19)

#4605 - 10/08/01 02:18 PM Re: panel  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
stan,
said ground wire may be acting as a parrallel nuetral
[Linked Image]


#4606 - 10/08/01 09:28 PM Re: panel  
stan  Offline
Member
Joined: Aug 2001
Posts: 37
ky
it is in the main panel inside the home


#4607 - 10/09/01 09:27 AM Re: panel  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
IL
Stan,
Does this panel have a main bonding jumper?
Don(resqcapt19)


Don(resqcapt19)

#4608 - 10/09/01 11:12 AM Re: panel  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
How old is the house? Where does the circuit you are working on go to? Was the dryer running when you were doing this?


#4609 - 10/14/01 08:38 PM Re: panel  
bordew  Offline
Member
Joined: Aug 2001
Posts: 142
Vienna,Ohio, USA
This is not unusual, you created another path to ground. The Neutral and a ground share the current back to the transformer. Because the neutral has significantly lower resistance that the ground it will carry the bulk of the current say from 90-95 % of the current but by connecting a ground to the neutral bar it just ccreated another path.



Member Spotlight
Bill Addiss
Bill Addiss
NY, USA
Posts: 3,878
Joined: October 2000
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: 0.013s Queries: 14 (0.002s) Memory: 0.7890 MB (Peak: 0.9497 MB) Zlib enabled. Server Time: 2017-10-20 07:15:28 UTC