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UL 60079-26
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UL 60079-26 3rd Edition, July 21, 2017 UL Standard for Safety Explosive Atmospheres – Part 26: Equipment with Equipment Protection Level (EPL) Ga
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Description / Abstract:
This standard specifies alternative requirements for construction, test and marking for electrical equipment mounted across a boundary where different Equipment Protection Levels may be required.
EXAMPLE: Equipment installed in the wall of a storage vessel containing Zone 0 (requiring EPL Ga) inside an area defined as Zone 1 (requiring EPL Gb).
This standard supplements and modifies the general requirements ofUL 60079-0. Where a requirement of this standard conflicts with a requirement ofUL 60079-0, the requirement of this standard takes precedence.
Where references are made to IEC 60079 standards, the referenced requirements found in these standards shall apply as modified by any applicable U.S. National Differences.
EXAMPLE: Equipment installed in the wall of a storage vessel containing Zone 0 (requiring EPL Ga) inside an area defined as Zone 1 (requiring EPL Gb).
This standard supplements and modifies the general requirements ofUL 60079-0. Where a requirement of this standard conflicts with a requirement ofUL 60079-0, the requirement of this standard takes precedence.
Where references are made to IEC 60079 standards, the referenced requirements found in these standards shall apply as modified by any applicable U.S. National Differences.