My company assembly and design Industrial control panel with PLC inside for control very big industrial Gas compressor and Boiler BMS systems.
for design and assembly use the NFPA79 considering the panel part of industrial machinery according chapter 670.2 of NFPA70
Now a customer tell us that the NFPA79 is non applicable for our panel because the panel i not part of Gas compressor , and Gas compressor and Boiler is not a "industrial machinery" .
the big discussion is about the wires color that customer want adopt that con are according the normative.
something have previous experience about.