Can Photo-voltaic wire be installed in a cable Tray. 690.31 C says yes but 392.10 B1 says 1/0 and larger? Anyone have opinions on this?
While the AHJ rules, 392.10(B) states that wiring methods in Table 392.10A are permitted under that section, however PV is not listed. 392.10(B) is for Industrial sites and lists 1/0. Opinion is that 690.31 states how to use cable tray but does not list minimum wire size, so if following intent of 392.10A would believe to be OK.
It seems from the wording of the code (2017) you would be constrained to 1/0 or larger only.
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