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#4602 10/05/01 07:17 PM
Joined: Aug 2001
Posts: 37
S
stan Offline OP
Member
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??

#4603 10/05/01 07:39 PM
A
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
Joined: Nov 2000
Posts: 2,148
R
Member
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
Joined: Oct 2000
Posts: 5,392
S
Member
stan,
said ground wire may be acting as a parrallel nuetral
[Linked Image]

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

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


Don(resqcapt19)
#4608 10/09/01 11:12 AM
Joined: Mar 2001
Posts: 2,056
R
Member
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
Joined: Aug 2001
Posts: 142
B
Member
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.


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