ground and neutral connected to same tap in panel - Electrician Talk - Professional Electrical Contractors Forum
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Old 05-15-2017, 01:01 PM   #1
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Default ground and neutral connected to same tap in panel

I have a large panel. I notice a number of grounds and neutrals are sharing the same connection under the screw on the bus bar. What I mean is that there is ONE ground and ONE neutral under the same screw. I was told this is not acceptable and neutral should always get a separate screw and grounds can be combined under the same screw. Is this true?
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Old 05-15-2017, 01:22 PM   #2
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Not sure what the codes are where you are? But in California the code is one screw one wire.
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Old 05-15-2017, 01:29 PM   #3
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Read the label on the panel cover, it will tell you what combinations of wires are acceptable for that panel.
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Old 05-15-2017, 05:21 PM   #4
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Electricians of a certain age always did it that way. If it's 40 plus years old and hasn't failed, I don't mess with it.
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Old 05-15-2017, 06:03 PM   #5
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Quote:
Originally Posted by J V View Post
I have a large panel. I notice a number of grounds and neutrals are sharing the same connection under the screw on the bus bar. What I mean is that there is ONE ground and ONE neutral under the same screw. I was told this is not acceptable and neutral should always get a separate screw and grounds can be combined under the same screw. Is this true?
All it depending if this is a main panel or subpanel that is a whole different set of game to play.,,

but with resdentail panel .,, yes it is common to see that but again as RePhase277 mention very clear .,, check the panel for latest details due many panel have different specs.,,

plus some local customs in there in the mix. so expect that.

However majorty of commercal and industrails panels ., no .,, only one wire per screw ( unless stated in prints or other approved means )
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Old 05-15-2017, 10:16 PM   #6
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408.41 Grounded Conductor Terminations.
Each grounded conductor shall terminate within the panelboard in an individual terminal that is not also used for another conductor.
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Old 05-17-2017, 06:41 PM   #7
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Up here in Canada you can't have neuts and grounds on the same termination strip let alone under the same screw.
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Old 05-23-2017, 01:11 PM   #8
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Up here in Canada you can't have neuts and grounds on the same termination strip let alone under the same screw.
So, where are you bonding ground and nuetral?

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Old 05-23-2017, 01:40 PM   #9
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So, where are you bonding ground and nuetral?

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The neutral bar in the main panel is bonded to the can by way of a strap or special screw or the like. Then branch neutrals land individually on the neutral bar, and grounds land on the ground bar. The ground bar can have more than one under each screw.

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Old 05-23-2017, 01:40 PM   #10
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So, where are you bonding ground and nuetral?

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Their main disconnect is in a separately enclosed section of the panel. I believe inside of that section is where the neutral and ground are bonded. On the outside of that internal enclosure the branch circuit breaker section is now like a subpanel, in which the neutrals and grounds stay separate.
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Old 05-23-2017, 01:42 PM   #11
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Their main disconnect is in a separately enclosed section of the panel. I believe inside of that section is where the neutral and ground are bonded. On the outside of that internal enclosure the branch circuit breaker section is now like a subpanel, in which the neutrals and grounds stay separate.
Thank you. Seems like an awful waste on money, though.
JMHO

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Old 05-23-2017, 01:55 PM   #12
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Their main disconnect is in a separately enclosed section of the panel. I believe inside of that section is where the neutral and ground are bonded.
Where did you discern that? I didn't see it in the thread.
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Old 05-23-2017, 03:08 PM   #13
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Where did you discern that? I didn't see it in the thread.
Other threads.
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Old 05-23-2017, 03:14 PM   #14
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Other threads.
Ah...
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