(1999 NEC) 240-3(b) is the "next higher breaker" allowed code section.
My code book is full of margin notes from various code classes and I see a note here: 'for branch circuits, not feeders'.
?? - I don't remember not being allowed to use the next higher breaker for feeders (I'm thinking for sub-panels). Is there somewhere in the code that prohibits the 'next higher breaker' on feeders to sub-panels?
