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Are the NQ panels approved for use with 240V open delta systems?

Issue:
What voltage systems can the NQ panel be used on?

Product Lines:
NQ Panelboards

Environment:
Product sold in North America

Cause:
Need to know the rating of NQ panelboards in Open Delta System

Resolution:
NQ panelboards are not listed or approved for use on 240V open delta applications.  They are intended for use on standard delta or wye three phase power systems.

See Square D Digest 177 Section 9, page 9-3 through 9-9 for series ratings tables, which list valid voltage systems for NQ panelboards.
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