Equipment Grounding Conductor in Wireway

[powernap]

I have a setup where a large trough is used as a pullbox for multiple branch circuit homeruns. Most everything in the box proceeds straight through without splicing, but if I need to splice a circuit, would I then have to splice all the equipment grounding conductors of the multiple homeruns and connect them to the metal wireway, or just the ECG of the affected home run.

250.148 (NEC2008) requires the ECG's "associated" with those spliced conductors to be connected within the box or to the box.

Note: Hospital, Critical circuits involved, but the basic question is the same.

 

[Gregg Harris]

I have a setup where a large trough is used as a pullbox for multiple branch circuit homeruns. Most everything in the box proceeds straight through without splicing, but if I need to splice a circuit, would I then have to splice all the equipment grounding conductors of the multiple homeruns and connect them to the metal wireway, or just the ECG of the affected home run.

250.148 (NEC2008) requires the ECG's "associated" with those spliced conductors to be connected within the box or to the box.

Note: Hospital, Critical circuits involved, but the basic question is the same.

250.148 Continuity and Attachment of Equipment Grounding Conductors to Boxes. Where circuit conductors are spliced within a box, or terminated on equipment within or supported by a box, any equipment grounding conductor(s) associated with those circuit conductors shall be connected within the box or to the box with devices suitable for the use in accordance with 250.148(A) through (E).
Exception: The equipment grounding conductor permitted in 250.146(D) shall not be required to be connected to the other equipment grounding conductors or to the box.

Only the associated ground to the circuit conductors being taped, all others can pass through

 

[powernap]

Thanks,

That was my opinion as well. Hopefully the AHJ will see it that way.