Hello again to all of you, First, thanks to the 3 that responded. I wrote the following inquiry, marked with '>': -------------------------------------------------- >I can fairly easily characterize the household, commercial, light-industrial, and >heavy-industrial environments, but I have not found any clear and official definitions >of these type of environments. The one official source that I have been able to find is >EN50082-1 which only provides a few examples. What is the delineation between >light-industrial and heavy-industrial?
>Is/are there any published standards/publications/documents that define >these environments? If there are any and any of you know them, would you be >kind enough to relay that information to me. All that I need are the >standards references, but the actual definitions would be also appreciated. -------------------------------------------------- >From the responses that I received, there appears that there are no actual clear definitions for any of these categories. All of the respondents provided their own interpretations by stating that the delineation occurs with use of the public low-voltage mains supply (minimally, refer to Section 1 of EN50082-1). Only one actually referred to a standard and only one referred to other environmental factors. I feel that all of these respondents are correct with the responses to this query. However, to ensure adequate application, one must look to the standards. From the standard I am absolutely sure that there must be some exceptions to this. referred to above, the only description of delineation of these categories is the public low-voltage mains supply and those locations serviced by it. If an apparatus does directly connect to the public low-voltage mains supply, it must then be classified as residential, commercial or light-industrial. All other apparatus are covered by other standards. However, in many cases, exceptions (or gray-areas) exist for every rule (e.g., floor supervisor office areas in steel mills, etc.) which is why there is so much interpretation, I suppose. With the apparatus' descriptions and gray-areas, the standards can only provide 'guidelines' for installed environments. It is then up to the manufacturer/integrator/etc. to determine the actual installed environment for its apparatus and then to test it accordingly. Again, thanks to the 3 that took the time to respond to my query. Constructive comments are always welcome. Best regards, Ron Pickard [email protected]
