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(E) Intrinsic Safety
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This protection technique shall be permitted for equipment in Class I, Division 1 or 2; or Class II, Division 1 or 2; or Class III, Division 1 or 2 locations. The provisions of Articles 501 through 503 and Articles 510 through 516 shall not be considered applicable to such installations, except as required by Article 504, and installation of intrinsically safe apparatus and wiring shall be in accordance with the requirements of Article 504.
Related Code Sections
(E) Special Occupancies, Intrinsic Safety
as required by Article 504, and installation of intrinsically safe apparatus and wiring shall be in accordance with the requirements of Article 504 ...
National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 500 Hazardous (Classified) Locations, Classes I, II, and III, Divisions 1 and 2 > 500.7 Protection Techniques > (E) Intrinsic Safety
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This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is identified ...
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National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 505 Zone 0, 1, and 2 Locations > 505.8 Protection Techniques > (C) Intrinsic Safety "i"
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with the wording "Intrinsic Safety Wiring" or equivalent. The labels shall be located so as to be visible after installation and placed so that they may ...
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National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 504 Intrinsically Safe Systems > 504.50 Grounding > (A) Intrinsically Safe Apparatus, Enclosures, and Raceways