ECN Forum Forums General Topics of the Trade General Discussion Area Series-rating subpanels

Mea Culpa.

I was too brief in my description.
While, three levels of series ratings are available, they must be listed as such. For example, from Square D Switchboard/Panelboard Short-Circuit Current Ratings : "In order for all OCPDs (A, B, C) to be in a series combination (three-tier), the series combination would have to be marked on the panelboard housing OCPD (C)."