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What is the difference between through feed and sub feed lugs?

Issue:
What is the difference between through feed and sub feed lugs?

Product Line:
Circuit breaker panelboards sold and supported in the USA.

Environment:
Product characteristics/differences

Cause:
Application

Resolution:
Feed through lugs are a second set of lugs mounted opposite the mains end on the end of the bussing. They can be used on main lug or main breaker interiors.
Sub feed lugs are a replacement set of lugs that is used in place of the main lugs of a panelboard.  They allow the installer to subfeed to another panel or device. 

CTA-ID : 2022458
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