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Old 09-09-2010, 06:58 PM   #1
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Termination of neutral in main service panel


In the main service panel, can a neutral be terminated in the equipment ground bar if there are no spaces left in the neutral bar?

Thank you,
Mike

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Old 09-09-2010, 06:59 PM   #2
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Termination of neutral in main service panel


Neutral & Ground are always tied together in a Main Panel. Only in a Sub are they separate.

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Old 09-10-2010, 02:45 AM   #3
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Termination of neutral in main service panel


I think the question had to do with the physical attachment points - the OP understands they are electrically tied together.
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Old 09-10-2010, 08:07 AM   #4
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Termination of neutral in main service panel


Thanks vsheetz,

I want to add a circuit in the main service panel and there are no positions available on the nuetral bar, but there are several positions available in the equipment ground bar. My question is, "Can I terminate the neutral of the new circuit on the equipment ground bar?" Is this code compliant for NEC 2008?

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Mike
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Old 09-10-2010, 08:25 AM   #5
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Termination of neutral in main service panel


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Originally Posted by Mike2401 View Post
Thanks vsheetz,

I want to add a circuit in the main service panel and there are no positions available on the nuetral bar, but there are several positions available in the equipment ground bar. My question is, "Can I terminate the neutral of the new circuit on the equipment ground bar?" Is this code compliant for NEC 2008?

Thank you,
Mike
Just a bit of information..
Since you are out of neutral bar spaces, there must be ground wires occupying some of those spaces. If you look closely at your panel, you will see that the two bars, neutral and ground, are connected some how. This is proper for a main panel but if this were a sub panel the two bars have to be separate.
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Old 09-10-2010, 08:43 AM   #6
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Termination of neutral in main service panel


Also grounds of the same size can be doubled up under one screw
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Old 09-10-2010, 09:45 AM   #7
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Termination of neutral in main service panel


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In the main service panel, can a neutral be terminated in the equipment ground bar if there are no spaces left in the neutral bar?

Thank you,
Mike
Hi Mike

Just to be certain what your talking about. If you have an added grounding bar in the service equipment ... ie... the place where the main breaker (disconnect) is located you CANNOT land a neutral (grounded conductor) to that grounding bar.

What I'm saying here is if you have a neutral bar or bars that are bonded together and to the metal of the panel with a main bonding jumper ... then neutrals and grounds can land on them. However if a grounding bar has been added or the panel came with one installed it will be attached directly to the metal of the panel and will not be mounted on plastic standoffs like the neutral bar or bars.

If that is what you have you cannot land a neutral on that grounding bar. The reason is you are not allowed to use the metal of the panel to return neutral current to the service neutral via the main bonding jumper that bonds the neutral bar to the panel metal.

Here is an example
Attached Thumbnails
Termination of neutral in main service panel-objectionable-current-1.jpg  

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Last edited by Stubbie; 09-10-2010 at 10:14 AM.
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