Definition of Field Wiring Terminals as in UL 499
In general, field wiring is wiring that is connected between equipment items or equipment components that are connected upon installation in the field. Such wiring is generally connected by an installing electrician and run in conduit or other structure used for that purpose in the facility where the equipment is installed. Usually the conductors or cable is supplied by the purchaser of the equipment. Occasionally, equipment is furnished with cables and connectors, but that does not seem to be applicable in this case. I am not familiar with UL 499, but I doubt very much that some other definition pertains to that.