Does anyone knows about NEMA 0803? its a native code?

Answer 1

NEMA is the acronym for National Electrical Manufacturers Association. I was unable to find a reference to 0803 and the number is unfamiliar to me. If you have more information you might find this site helpful:

http://www.nema.org/stds/list-DocNum.cfm

edit:
0803 may refer to a publication date of August, 2003.