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When ordering a factory assembled 400 amp main lug only NF panelboard with subfeed lugs, does changing the main lugs to accommodate 750MCM conductors also change the sizing of the subfeed lugs to 750 MCM?

Issue:
400A NF Factory assembled Panelboard main lug only with subfeed lugs. Does changing the main lugs to accommodate 750MCM conductors also change the sizing of the subfeed lugs to 750 MCM?

Product Line:
Panelboards.

Environment:
Products sold in the United States.

Cause:
Product features.

Resolution:
Yes. Both main lug and subfeed lug sizes change to 750MCM.