identifing panels/grounding

[djwireman]

How is a good way to determin if grounding conductors and nautral conductors in a single phase 120/240v panel should be on the same bus terminal? My experiance has been only in new construction and the company I'm currently with is getting into older remodel stuff where Im adding circuits to panels that some times they are separated while others are together? Is their a book or something I can follow or learn about this particular subject?

 

[celtic]

Is their a book or something I can follow or learn about this particular subject?

Mike Holt has one:

(Great samples here: http://mikeholt.com/freegraphics.php?id=gvb)


Soares makes a pretty good book:

 

[chris kennedy]

How is a good way to determin if grounding conductors and nautral conductors in a single phase 120/240v panel should be on the same bus terminal?

This is a good way.

250.24 Grounding Service-Supplied Alternating-Current Systems.

(B) Main Bonding Jumper. For a grounded system, an unspliced main bonding jumper shall be used to connect the equipment grounding conductor(s) and the service-disconnect enclosure to the grounded conductor within the enclosure for each service disconnect in accordance with 250.28.

 

[frizbeedog]

This is a good way.

Or...

250.24(A)(5) 2008

A grounded conductor shall not be connected to normally non-current-carrying metal parts of equipment, to equipment grounding conductor(s), or be reconnected to ground on the load side of the service disconnecting means except as otherwise permitted in this article.

 

[Buck Parrish]

How is a good way to determin if grounding conductors and nautral conductors in a single phase 120/240v panel should be on the same bus terminal?

In residential installations for 2008. You would isolate the neutral and ground after the first disconnect.


The Soares Book mentioned above is also very good.

 

[celtic]

In residential installations for 2008. You would isolate the neutral and ground after the first disconnect.

I think it goes back a lot further than '08

 

[don_resqcapt19]

In general terms if the panel you are in does not contain the service disconnect, then you cannot land the grounded (neutral) and grounding conductors on the same terminal strip. If you are asking about landing them under the same screw, that is never permitted.
Don