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Can you connect (2) 750 kcmil wire to a 800A Main Lug HCM I line panelboard?

Issue:
Can you connect (2) 750 kcmil wire to a 800A Main Lug HCM I line panelboard?

Product Line:
I Line Panelboard

Environment:
Installation

Cause:
Clarification

Resolution:
A HC3209EX (9") box extension will need to be ordered for the (2) 750 kcmil wire per phase.  The NEC wire bending space for the 800A panel has a maximum of (3) 500kcmil wire per phase , even though lugs installed are rated to accept (4) 3/0-750 kcmil per phase 
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