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  • Users: Fieldbus
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  1. Fieldbus

    US adoption rate for Aex approvals

    Does anyone know any US plants that have adopted Zones for hazardour location approvals? For hazardous areas in Europe and RoW, plants are usually classified into Zones (0/1/2) to IEC standards, whereas in the US, plants are classified into Div1/Div2 to NEC500. The latest update to the NEC adds...
  2. Fieldbus

    US adoption of Zones: is there any?

    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...

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