Yes, field listing/labeling, by UL, or another recognized provider is required by AHJs on items that are not ‘labeled’.
A recent field evaluation of five identical custom packaging machines, generated a field label n each, and 27 pages each of data. 2 days on site, $26.5k total. Interesting, that these machines are at 2 other locations, and both of those had the same evaluation. BTW, it was required by the client, not the EC.
