if you read 690.64b it does mention both the buss rating AND conductors.
for years and years I thought it was just for the buss rating until i got
called recently for the feeders being undersized and unable to accommodate the
solar within 120%. I see a lot of sentiments in this thread that it is only for
busing, and I would really like to discover a reference to that. Someone told
me something about the difference of having main lugs and main breakers in the
sub panel... i am looking into it.
>From the literal of 690.64 it would seem that if you are fed with #4 than you
>are stuck with 120% of 100a regardless of the sub panel rating.
nick
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