What are the available bus bar rating for NQ and NF panelboard?

Issue:

Wants a 100A QB main breaker in an NQ panel with a 225A bus rating

Product Line:

Panelboards

Environment:

NQ, NF panelboards

Resolution:

There are only two bus sizes for NQ: 225A and 600A. The lugs or the main breaker control the system rating in addition to bus size.

NF is different. NF uses laminations of buses as the amperage increases. The first layer is rated for 250A. Laminations are added for each step up, 400A is two layers, 600A is three layers, and 800A is 4 layers.

See the attached document for more information

Released for: Schneider Electric Canada