Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
NAMUR PRINCIPLE
try this site. Basically it is a group of Germany manufactures which have developed their own protocol http://www.namur.de/en/organ_d11.html- hazloc
- Post #2
- Forum: Electrical Engineering general discussion
-
Explosion ratings
Hello The NEC stands for the National Electrical Code and is published and owned by the NFPA. Basically, the NEC is used by electrical installation personnel for rules of installations of equipment. For example, "NEC article 500" is used for hazardous location installations. The NEC...- hazloc
- Post #8
- Forum: IEEE (electrical) Code Issues
-
Explosion ratings
Class I div 1 is both explosion proof and intrinsic safety (I.S.) Exp proof = Flame proof, so an explosion proof box rated as such from UL or FM would be marked by the Europeans as EEx d The gas groups are: Class I Div 1 A=C2H2 (ace.) is IIC by Europeans (it also includes Hydrogen when marked...- hazloc
- Post #4
- Forum: IEEE (electrical) Code Issues
-
paint booth classification
The NEC allows either the Class/Div system or the Group/Zone system for classifed locations. Interms of a lift table, some tables are hydralic and use either air controls or intrinsic saftey controls. This would require the pump motor and lift ramps being connected thru hydralic hoses. (motors...- hazloc
- Post #2
- Forum: ANSI (standards) Code Issues
