Neutral and Ground at main panel

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Old 11-10-07, 09:20 PM
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Neutral and Ground at main panel

I have an older box sometime around the 80's and was wondering if it is okay that the neutral and ground share the same bar?

If a subpanel was installed would the neutral and ground connect on the same bar?

BOB
 
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Old 11-10-07, 09:27 PM
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I'm not sure what the age of the box has to do with it.

Is this the "main" panel?
Is there a main disconnect before this panel?
Is the sub-panel in question in a detached structure?
If so what wires are feeding it?
 
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Old 11-10-07, 09:36 PM
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Originally Posted by mrboyd View Post
I have an older box sometime around the 80's and was wondering if it is okay that the neutral and ground share the same bar?

If a subpanel was installed would the neutral and ground connect on the same bar?

BOB
Neutral and Ground are "bonded" in the main panel, so it doesn't really matter. However, (where I live) they have their own bars and are kept seperate, even though it doesn't matter.

Outside of the main panel they are always seperate.
 
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Old 11-11-07, 08:17 AM
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Originally Posted by fungku View Post
Outside of the main panel they are always seperate.
I not sure about Canada but there are exceptions here. They will be removed in the 2008 NEC but that is irrelevant right now.
This is why I asked if it was a detached structure. There are instances where a detached structure can be fed with a 3-wire feeder and the sub-panel is treated like a "main" panel.
 
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Old 11-11-07, 09:00 AM
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Originally Posted by Speedy Petey View Post
I not sure about Canada but there are exceptions here. They will be removed in the 2008 NEC but that is irrelevant right now.
This is why I asked if it was a detached structure. There are instances where a detached structure can be fed with a 3-wire feeder and the sub-panel is treated like a "main" panel.
That's true.

I guess that's where the old saying ...."Exit as a feeder, Enter as a Service"....originated

That's all in the past when the new 08 code comes into effect.

steve
 
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Old 11-11-07, 09:06 AM
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some clarification

Yes this is a main panel

Yes there is a disconnect

The subpanel is currently next to it

The pictures will show the neutral / ground bar in question.

http://i240.photobucket.com/albums/f...l/PB111137.jpg

http://i240.photobucket.com/albums/f...l/PB111136.jpg
 
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Old 11-11-07, 09:15 AM
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Thos pictures aren't clear to me....Which ground bar is in which panel...etc..

Back off a few feet and make a picture of all of the panels in one shot to give the orientation.

steve
 
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Old 11-11-07, 09:17 AM
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Originally Posted by hillbilly ace View Post
That's all in the past when the new 08 code comes into effect.
True.....IF your area adopts the '08 NEC.

NY State will not likely adopt a version of it until 2015!
It's 2007 and we're working off 1999.
 
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Old 11-11-07, 09:20 AM
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Originally Posted by mrboyd View Post
Yes this is a main panel

Yes there is a disconnect

The subpanel is currently next to it

The pictures will show the neutral / ground bar in question.
If that's the main panel you are fine as we said.
If a sub-panel is next to it that would need a 4-wire feeder and the grounds and neutrals kept separate.
 
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Old 11-11-07, 09:28 AM
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main box

The pictures were of the main box only.

http://i240.photobucket.com/albums/f...l/PB111138.jpg
 
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Old 11-11-07, 09:31 AM
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speedy

If a sub-panel is next to it that would need a 4-wire feeder and the grounds and neutrals kept separate.


You are close to what we are talking about now. How would one separate the ground and the neutrals between the two boxes with the setup I have.
 
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Old 11-11-07, 04:21 PM
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At the main panel, the ground and neutral feeding the sub-panel would be connected to the same bar.
- In the sub-panel the ground and neutral would terminate each on their own bar.
- The neutral is the bar one plastic stand offs and isolated from the metal enclosure.
- The ground bar is the one screwed right to the metal enclosure.
 
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Old 11-11-07, 05:14 PM
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Thanks

That us what I thought But then I started questioning myself.

Thanks for your time,

BOB
 
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Old 11-11-07, 06:36 PM
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No prob!
 
 

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