Years ago, Europe had Zones (0,1,2) for hazardous areas and the US had Divisions (1,2) under NEC500. They were not identical and of course, local preferences led to divergence in methods of installation: Increased Safety (Exe) is very popular in Europe and Flameproof is very popular in the US. Now that the NEC has been updated to include the concenpt of Zones, a version of increased safety called AEx is potentially available for US users, but the plant has to be classified with Zones according to NEC505.
Has anyone know of any US plant(s) classified with Zones, rather than Divisions? As I understand it, these are mutually exclusive, so you can't put Class I Div 1 motor in a Zone 1.
Has anyone know of any US plant(s) classified with Zones, rather than Divisions? As I understand it, these are mutually exclusive, so you can't put Class I Div 1 motor in a Zone 1.