This is a clear indication of how the electrical industry is so confused, and we wonder why there is never any policing or procecution.
I decide to put it out there and get a quote for a 5 ft freezer room light fitting.
Prices and type of fitting range from a R300 for a standard dust proof fitting, to R1300 for a so called freezer room fitting, here the joke if you ask one person a tthe counter for the light you get a dust proof fitting, you ask another person in the same wholesaler, they tell you you cannot use a standard dust proof fitting. You can use a standard wire would transfomer with special starters and tubes, but you cannot use electronic ballasts.
If you are not sure, i would think you would contact the supplier of the fitting, who at the end of the day must have a SANS approval, and should know where thier fitting can and cant be used for specific locations.