Fusing three or more strings

ggunn

PE (Electrical), NABCEP certified
Location
Austin, TX, USA
Occupation
Electrical Engineer - Photovoltaic Systems
I haven't had to deal with this in a while, but IIRC at some point the NEC changed from requiring fuses on both + and - DC conductors to just one or the other. Does anyone in here remember what code cycle that was, if indeed I do RC?
 
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