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Thursday, December 21, 2017
Question:
Should a PLC be installed in an epsilon proof area, such as zone 1.
Phil Vanderbilt
A
Answer:
Hey Phil thanks for your question. If it is possible to locate equipment in an unclassified location it can reduce the amount of special equipment necessary as stated in 505.5(A) Informational Note 2. If the PLC will be in the hazardous (classified) location then it needs to be suitable for that location. Sections 505.8 and 505.9 have additional information.