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Can I mount a QOB3150VH branch breaker in an NQOD442L400CU panel?

Issue:
Application

Product Line:
Panelboards

Environment:

UL 67, UL 50, CSA C22.2 No.'s 20-M1989 & 94-M91, NEMA PB1, NFPA 70 Art. 408, Federal Specification W-P-115C Type 1 Class 1 , 2003 IBC, NFPA 5000, ASCE/SE17


Cause:
It may be desirable to mount a 150A branch device, a comparatively large device for the typical lighting panelboard application,  in a 400A rated panelboard.

Resolution:

Yes, but note that it requires 6 pole spaces and that the maximum amperage breaker that can be mounted across from it is 20A.  NOTE:  NQOD panelboards are obsolete, superseded by NQ.  This FAQ is applicable to NQ.



 
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