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#4602 - 10/05/01 04:17 PM panel
stan Offline
Member

Registered: 08/15/01
Posts: 38
Loc: 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??

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#4603 - 10/05/01 04:39 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.

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#4604 - 10/08/01 11:17 AM Re: panel
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: 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)

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#4605 - 10/08/01 11:18 AM Re: panel
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
stan,
said ground wire may be acting as a parrallel nuetral

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#4606 - 10/08/01 06:28 PM Re: panel
stan Offline
Member

Registered: 08/15/01
Posts: 38
Loc: ky
it is in the main panel inside the home

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#4607 - 10/09/01 06:27 AM Re: panel
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: IL
Stan,
Does this panel have a main bonding jumper?
Don(resqcapt19)
_________________________
Don(resqcapt19)

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#4608 - 10/09/01 08:12 AM Re: panel
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: 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?

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#4609 - 10/14/01 05:38 PM Re: panel
bordew Offline
Member

Registered: 08/27/01
Posts: 155
Loc: 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.

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