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(Please note that this ISA standard is an IEC adoption with modifications. Therefore, the "Free Preview for Members" option is not available, and the Standards Redemption Coupon may not be applied to its purchase.)This standard specifies the particular requirements for construction, test and marking for electrical equipment of Group II intended for use in Class I, Zone 0 as defined in the National Electrical Code, ANSI/NFPA 70. This electrical equipment, within the operational parameters specified by the manufacturer, ensures a very high level of protection that includes rare faults related to the equipment or two faults occurring independently of each other.
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