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Chaptewr 5 Special Occupancies | 506.6 | For the purposes of testing, approval, and area classification, various air mixtures (not oxygen enriched) shall be grouped as follows: Group IIIC: Combustible metal dust, including combustible metal fibers/flyings. [499:3.3.8.2.1]Group IIIB: Combustible dust other than combustible metal dust. [499:3.3.8.2.2]Group IIIA... | https://2023.antflix.net#506.6 |
Chaptewr 5 Special Occupancies | 506.7 | This article shall require equipment construction and installation that ensures safe performance under conditions of proper use and maintenance. [506.7](https://2023.antflix.net#506.7) | https://2023.antflix.net#506.7 |
Chaptewr 5 Special Occupancies | 506.7(A) | Classification of areas, engineering and design, selection of equipment and wiring methods, installation, and inspection shall be performed by qualified persons. [506.7(A)](https://2023.antflix.net#506.7(A)) | https://2023.antflix.net#506.7(A) |
Chaptewr 5 Special Occupancies | 506.7(B) | In instances of areas within the same facility classified separately, Zone 22 locations shall be permitted to abut, but not overlap, Class II or Class III, Division 2 locations. Zone 20 or Zone 21 locations shall not abut Class II or Class III, Division 1 or Division 2 locations. [506.7(B)](https://2023.antflix.net#506... | https://2023.antflix.net#506.7(B) |
Chaptewr 5 Special Occupancies | 506.7(C) | A Class II or Class III, Division 1 or Division 2 location shall be permitted to be reclassified as a Zone 20, Zone 21, or Zone 22 location if all of the space that is classified because of a single combustible dust, combustible fiber/flying, or ignitible fiber/flying source is reclassified under the requirements of th... | https://2023.antflix.net#506.7(C) |
Chaptewr 5 Special Occupancies | 506.7(D) | Where flammable gases, combustible dusts, combustible fibers/flyings, or ignitible fibers/flyings are or might be present at the same time, the simultaneous presence shall be considered during the selection and installation of the electrical equipment and the wiring methods, including the determination of the safe oper... | https://2023.antflix.net#506.7(D) |
Chaptewr 5 Special Occupancies | 506.8 | Acceptable protection techniques for electrical and electronic equipment in hazardous (classified) locations shall be as described in 506.8(A) through (P). Informational Note No. 1: See ANSI/UL 120101, Definitions and Information Pertaining to Electrical Equipment in Hazardous Locations; and ANSI/UL 60079-0, Explosive ... | https://2023.antflix.net#506.8 |
Chaptewr 5 Special Occupancies | 506.8(A) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is identified. [506.8(A)](https://2023.antflix.net#506.8(A)) | https://2023.antflix.net#506.8(A) |
Chaptewr 5 Special Occupancies | 506.8(B) | This protection technique shall be permitted for equipment in Zone 21 and Zone 22 locations for which it is identified. [506.8(B)](https://2023.antflix.net#506.8(B)) | https://2023.antflix.net#506.8(B) |
Chaptewr 5 Special Occupancies | 506.8(C) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is identified. [506.8(C)](https://2023.antflix.net#506.8(C)) | https://2023.antflix.net#506.8(C) |
Chaptewr 5 Special Occupancies | 506.8(D) | This protection technique shall be permitted for equipment in Zone 22 locations for which it is identified. [506.8(D)](https://2023.antflix.net#506.8(D)) | https://2023.antflix.net#506.8(D) |
Chaptewr 5 Special Occupancies | 506.8(E) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is identified. [506.8(E)](https://2023.antflix.net#506.8(E)) | https://2023.antflix.net#506.8(E) |
Chaptewr 5 Special Occupancies | 506.8(F) | This protection technique shall be permitted for equipment in Zone 22 locations for which it is identified. [506.8(F)](https://2023.antflix.net#506.8(F)) | https://2023.antflix.net#506.8(F) |
Chaptewr 5 Special Occupancies | 506.8(G) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is identified. [506.8(G)](https://2023.antflix.net#506.8(G)) | https://2023.antflix.net#506.8(G) |
Chaptewr 5 Special Occupancies | 506.8(H) | This protection technique shall be permitted for equipment in Zone 21 and Zone 22 locations for which it is identified. [506.8(H)](https://2023.antflix.net#506.8(H)) | https://2023.antflix.net#506.8(H) |
Chaptewr 5 Special Occupancies | 506.8(I) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, and Zone 22 locations for which it is listed. [506.8(I)](https://2023.antflix.net#506.8(I)) | https://2023.antflix.net#506.8(I) |
Chaptewr 5 Special Occupancies | 506.8(J) | This protection technique shall be permitted for electrical resistance trace heating equipment in Zone 21 or Zone 22 for which it is listed. [506.8(J)](https://2023.antflix.net#506.8(J)) | https://2023.antflix.net#506.8(J) |
Chaptewr 5 Special Occupancies | 506.8(K) | This protection technique shall be permitted for equipment in Zone 20, 21, or 22 locations for which the equipment is identified. [506.8(K)](https://2023.antflix.net#506.8(K)) | https://2023.antflix.net#506.8(K) |
Chaptewr 5 Special Occupancies | 506.8(L) | This protection technique shall be permitted for equipment in Zone 21 or 22 locations for which the equipment is identified. [506.8(L)](https://2023.antflix.net#506.8(L)) | https://2023.antflix.net#506.8(L) |
Chaptewr 5 Special Occupancies | 506.8(M) | This protection technique shall be permitted for equipment in Zone 20, 21, or 22 locations for which the equipment is identified. [506.8(M)](https://2023.antflix.net#506.8(M)) | https://2023.antflix.net#506.8(M) |
Chaptewr 5 Special Occupancies | 506.8(N) | This protection technique shall be permitted for skin effect trace heating equipment in Zone 21 or Zone 22 for which it is listed. [506.8(N)](https://2023.antflix.net#506.8(N)) | https://2023.antflix.net#506.8(N) |
Chaptewr 5 Special Occupancies | 506.8(O) | This protection technique shall be permitted in Zone 21 and Zone 22 locations for which it is identified. [506.8(O)](https://2023.antflix.net#506.8(O)) | https://2023.antflix.net#506.8(O) |
Chaptewr 5 Special Occupancies | 506.8(P) | This protection technique shall be permitted for equipment in Zone 20, Zone 21, or Zone 22 locations for which they are listed. [506.8(P)](https://2023.antflix.net#506.8(P)) | https://2023.antflix.net#506.8(P) |
Chaptewr 5 Special Occupancies | 506.9(A) | Suitability of identified equipment shall be determined by one of the following: Equipment listing or labelingEvidence of equipment evaluation from a qualified testing laboratory or inspection agency concerned with product evaluationEvidence acceptable to the authority having jurisdiction such as a manufacturer's self-... | https://2023.antflix.net#506.9(A) |
Chaptewr 5 Special Occupancies | 506.9(B) | Equipment that is listed for Zone 20 shall be permitted in a Zone 21 or Zone 22 location of the same combustible dust, combustible fiber/flying, or ignitible fiber/flying. Equipment that is listed for Zone 21 shall be permitted in a Zone 22 location of the same combustible dust, combustible fiber/flying, or ignitible f... | https://2023.antflix.net#506.9(B) |
Chaptewr 5 Special Occupancies | 506.9(C)(1) | Equipment identified for Class II, Division 1, Class II, Division 2, Class III, Division 1, or Class III, Division 2 shall, in addition to being marked in accordance with 500.8(C), be permitted to be marked with all of the following: Zone 20, 21, or 22 (as applicable)Material group in accordance with 506.6Maximum surfa... | https://2023.antflix.net#506.9(C)(1) |
Chaptewr 5 Special Occupancies | 506.9(C)(2) | Equipment meeting one or more of the protection techniques described in 506.8 shall be marked with the following in the order shown: Zone in accordance with Chapter 9, Table 13Symbol "AEx"Protection technique(s) in accordance with Chapter 9, Table 13Material group in accordance with 506.6Maximum surface temperature in ... | https://2023.antflix.net#506.9(C)(2) |
Chaptewr 5 Special Occupancies | 506.9(D) | Equipment shall be marked to show the maximum surface temperature referenced to a 40°C ambient, or at the higher marked ambient temperature if the equipment is rated and marked for an ambient temperature of greater than 40°C. For equipment installed in a Zone 20 or Zone 21 location, the operating temperature shall be b... | https://2023.antflix.net#506.9(D) |
Chaptewr 5 Special Occupancies | 506.9(E) | The supply connection entry thread form shall be NPT or metric. Conduit and fittings shall be made wrench-tight to prevent sparking when the fault current flows through the conduit system and to ensure the integrity of the conduit system. Equipment provided with threaded entries for field wiring connections shall be in... | https://2023.antflix.net#506.9(E) |
Chaptewr 5 Special Occupancies | 506.9(E)(1) | For equipment provided with threaded entries for NPT-threaded conduit or fittings, listed conduit fittings or listed cable fittings shall be used. All NPT-threaded conduit and fittings shall be threaded with a National (American) Standard Pipe Taper (NPT) thread. Informational Note: See ASME B1.20.1, Pipe Threads, Gene... | https://2023.antflix.net#506.9(E)(1) |
Chaptewr 5 Special Occupancies | 506.9(E)(2) | For equipment with metric-threaded entries, listed conduit fittings or listed cable fittings shall be used. Such entries shall be identified as being metric, or listed adapters to permit connection to conduit or NPT-threaded fittings shall be provided with the equipment and shall be used for connection to conduit or NP... | https://2023.antflix.net#506.9(E)(2) |
Chaptewr 5 Special Occupancies | 506.9(E)(3) | All unused openings shall be closed with blanking elements or close-up plugs that are listed for the location and will maintain the type of protection. Thread engagement shall comply with the requirements of 506.9(E)(1) or (E)(2). [506.9(E)(3)](https://2023.antflix.net#506.9(E)(3)) | https://2023.antflix.net#506.9(E)(3) |
Chaptewr 5 Special Occupancies | 506.9(F) | An optical fiber cable, with or without current-carrying conductors (hybrid optical fiber cable), shall be installed to address the associated fire hazard and sealed to address the associated explosion hazard in accordance with 506.15 and 506.16. [506.9(F)](https://2023.antflix.net#506.9(F)) | https://2023.antflix.net#506.9(F) |
Chaptewr 5 Special Occupancies | 506.9(G) | For equipment involving sources of optical radiation (such as laser or LED sources) in the wavelength range from 380 nm to 10 pm, the risk of ignition from optical radiation shall be considered for all electrical parts and circuits that might be exposed to the radiation, both inside and outside the optical equipment. T... | https://2023.antflix.net#506.9(G) |
Chaptewr 5 Special Occupancies | 506.15 | Wiring methods shall maintain the integrity of the protection techniques and shall comply with 506.15(A), (B), or (C). Informational Note: See Article 100 for the definition of restricted industrial establishment [as applied to hazardous (classified) locations]. [506.15](https://2023.antflix.net#506.15) | https://2023.antflix.net#506.15 |
Chaptewr 5 Special Occupancies | 506.15(A) | In Zone 20 locations, the following wiring methods shall be permitted: Threaded rigid metal conduit (RMC) or threaded intermediate metal conduit (IMC).Type MI cable terminated with fittings listed for the location. Type MI cable shall be installed and supported in a manner to avoid tensile stress at the termination fit... | https://2023.antflix.net#506.15(A) |
Chaptewr 5 Special Occupancies | 506.15(B) | In Zone 21 locations, the following wiring methods shall be permitted: All wiring methods permitted in 506.15(A)Fittings and boxes that are dusttight, that are provided with threaded bosses for connection to conduit, and in which taps, joints, or terminal connections are not made and are not used in locations where met... | https://2023.antflix.net#506.15(B) |
Chaptewr 5 Special Occupancies | 506.15(C) | In Zone 22 locations, the following wiring methods shall be permitted: All wiring methods permitted in 506.15(B).Rigid metal conduit (RMC) or intermediate metal conduit (IMC) with listed threaded or threadless fittings.Electrical metallic tubing (EMT) or dusttight wireways.Type MC or Type MI cable with listed terminati... | https://2023.antflix.net#506.15(C) |
Chaptewr 5 Special Occupancies | 506.16 | Where necessary to protect against the ingress of combustible dust, combustible fibers/flyings, or ignitible fibers/flyings, or to maintain the type of protection, seals shall be provided. The seal shall be identified as capable of preventing the ingress of combustible dust, combustible fiber/flying, or ignitible fiber... | https://2023.antflix.net#506.16 |
Chaptewr 5 Special Occupancies | 506.17 | Flexible cords used in Zone 20, Zone 21, and Zone 22 locations shall comply with all of the following: Be of a type listed for extra-hard usageContain, in addition to the conductors of the circuit, an equipment grounding conductor complying with 400.23Be connected to terminals or to supply conductors in an approved man... | https://2023.antflix.net#506.17 |
Chaptewr 5 Special Occupancies | 506.20(A) | In Zone 20 locations, only equipment listed and marked as suitable for the location shall be permitted. Exception No. 1: Equipment listed for use in Class II, Division 1 locations with a suitable temperature class shall be permitted. Exception No. 2: For locations involving Group IIIA materials, equipment listed for us... | https://2023.antflix.net#506.20(A) |
Chaptewr 5 Special Occupancies | 506.20(B) | In Zone 21 locations, only equipment listed and marked as suitable for the location shall be permitted. Exception No. 1: Apparatus listed for use in Class II, Division 1 locations with a suitable temperature class shall be permitted. Exception No. 2: Pressurized equipment identified for Class II, Division 1 shall be pe... | https://2023.antflix.net#506.20(B) |
Chaptewr 5 Special Occupancies | 506.20(C) | In Zone 22 locations, only equipment listed and marked as suitable for the location shall be permitted. Exception No. 1: Apparatus listed for use in Class II, Division 1 or Class II, Division 2 locations with a suitable temperature class shall be permitted. Exception No. 2: Pressurized equipment identified for Class II... | https://2023.antflix.net#506.20(C) |
Chaptewr 5 Special Occupancies | 506.20(D) | Equipment marked Group IIIC shall be permitted for applications requiring Group IIIA or Group IIIB equipment. Similarly, equipment marked Group IIIB shall be permitted for applications requiring Group IIIA equipment. [506.20(D)](https://2023.antflix.net#506.20(D)) | https://2023.antflix.net#506.20(D) |
Chaptewr 5 Special Occupancies | 506.20(E) | Electrical equipment installed in hazardous (classified) locations shall be installed in accordance with the manufacturer's instructions, if provided. [506.20(E)](https://2023.antflix.net#506.20(E)) | https://2023.antflix.net#506.20(E) |
Chaptewr 5 Special Occupancies | 506.20(F) | The temperature marking specified in 506.9(C)(2)(5) shall comply with 506.20(F)(1) or (F)(2): Combustible dusts or combustible fibers/flyings shall be less than the lower of either the layer or cloud ignition temperature of the specific combustible dust or combustible fiber/flying. For nonmetal dusts or nonmetal combus... | https://2023.antflix.net#506.20(F) |
Chaptewr 5 Special Occupancies | 506.30 | Regardless of the voltage of the electrical system, wiring systems and equipment shall comply with 506.30(A) and (B). [506.30](https://2023.antflix.net#506.30) | https://2023.antflix.net#506.30 |
Chaptewr 5 Special Occupancies | 506.30(A) | Wiring systems and equipment shall be grounded in accordance with Part I and Part VI of Article 250, as applicable. [506.30(A)](https://2023.antflix.net#506.30(A)) | https://2023.antflix.net#506.30(A) |
Chaptewr 5 Special Occupancies | 506.30(B) | Bonding shall comply with Part I and Part V of Article 250, as applicable, and 506.30(B)(1) and (B)(2). [506.30(B)](https://2023.antflix.net#506.30(B)) | https://2023.antflix.net#506.30(B) |
Chaptewr 5 Special Occupancies | 506.30(B)(1) | Bonding shall comply with 506.30(B)(1)(a) and (B)(1)(b). The locknut-bushing and double-locknut types of contacts shall not be depended on for bonding purposes, but bonding jumpers with identified fittings or other approved means of bonding shall be used. These bonding means shall apply to all metal raceways, fittings,... | https://2023.antflix.net#506.30(B)(1) |
Chaptewr 5 Special Occupancies | 506.30(B)(2) | Liquidtight flexible metal conduit shall comply with 506.30(B)(2)(a) and (B)(2)(b). Liquidtight flexible metal conduit shall include an equipment bonding jumper of the wire type in accordance with 250.102.In Zone 22 locations, the bonding jumper shall not be required where all of the following conditions are met:Listed... | https://2023.antflix.net#506.30(B)(2) |
Chaptewr 5 Special Occupancies | 511.1 | These occupancies shall include locations used for service and repair operations in connection with self-propelled vehicles (including, but not limited to, passenger automobiles, buses, trucks, and tractors) in which volatile flammable liquids or flammable gases are used for fuel or power. Informational Note: See NFPA ... | https://2023.antflix.net#511.1 |
Chaptewr 5 Special Occupancies | 511.2 | In addition to the requirements of this article, these occupancies shall comply with Table 511.2, as applicable, except as modified by this article. Table 511.2 Other Articles Requirement Division Classified Locations Zone Classified Locations Area classification 500.5, 500.6 505.5, 505.6, 505.7 Equipment Part... | https://2023.antflix.net#511.2 |
Chaptewr 5 Special Occupancies | 511.3 | Where Class I liquids or gaseous fuels are stored, handled, or transferred, electrical wiring and electrical utilization equipment shall be designed in accordance with the requirements for Class I, Division 1 or 2 hazardous (classified) locations as classified in accordance with 500.5 and 500.6, and this article. A Cla... | https://2023.antflix.net#511.3 |
Chaptewr 5 Special Occupancies | 511.3(A) | Parking garages used for parking or storage shall be permitted to be unclassified. Informational Note: See NFPA 88A, Standard for Parking Structures, and NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, for additional information. [511.3(A)](https://2023.antflix.net#511.3(A)) | https://2023.antflix.net#511.3(A) |
Chaptewr 5 Special Occupancies | 511.3(B) | Major and minor repair garages that dispense motor fuels into the fuel tanks of vehicles, including flammable liquids having a flash point below 38°C (100°F) such as gasoline, or gaseous fuels such as natural gas, hydrogen, or LPG, shall have the dispensing functions and components classified in accordance with Table 5... | https://2023.antflix.net#511.3(B) |
Chaptewr 5 Special Occupancies | 511.3(C) | Where vehicles using Class I liquids or heavier-than-air gaseous fuels (such as LPG) are repaired, hazardous area classification shall be in accordance with Table 511.3(C). Informational Note: See NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, Table 8.3.2, for additional information. [511.3(C)]... | https://2023.antflix.net#511.3(C) |
Chaptewr 5 Special Occupancies | 511.3(D) | Where vehicles using lighter-than-air gaseous fuels (such as hydrogen and natural gas) are repaired or stored, hazardous area classification shall be in accordance with Table 511.3(D). Informational Note: See NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, Table 8.3.2, for additional information... | https://2023.antflix.net#511.3(D) |
Chaptewr 5 Special Occupancies | 511.3(E)(1) | Areas adjacent to classified locations in which flammable vapors are not likely to be released, such as stock rooms, switchboard rooms, and other similar locations, shall be unclassified where mechanically ventilated at a rate of four or more air changes per hour, designed with positive air pressure, or separated by an... | https://2023.antflix.net#511.3(E)(1) |
Chaptewr 5 Special Occupancies | 511.3(E)(2) | The area used for storage, handling, or dispensing into motor vehicles of alcohol-based windshield washer fluid in repair garages shall be unclassified unless otherwise classified by a provision of 511.3. [30A: 8.3.1, Exception] Table 511.3(C) Extent of Classified Locations for Major and Minor Repair Garages with Heavi... | https://2023.antflix.net#511.3(E)(2) |
Chaptewr 5 Special Occupancies | 511.4(A) | Wiring located within Class I locations as classified in 511.3 shall conform with the requirements of Part II of Article 501 or 504.20, as applicable. [511.4(A)](https://2023.antflix.net#511.4(A)) | https://2023.antflix.net#511.4(A) |
Chaptewr 5 Special Occupancies | 511.4(B) | Within Class I locations as defined in 511.3, equipment shall conform with the requirements of Part III of Article 501 or 504.10, as applicable. [511.4(B)](https://2023.antflix.net#511.4(B)) | https://2023.antflix.net#511.4(B) |
Chaptewr 5 Special Occupancies | 511.4(B)(1) | Where fuel-dispensing units (other than liquid petroleum gas, which is prohibited) are located within buildings, 514.1 shall apply. Where mechanical ventilation is provided in the dispensing area, the control shall be interlocked so that the dispenser cannot operate without ventilation, in accordance with 500.5(B)(2). ... | https://2023.antflix.net#511.4(B)(1) |
Chaptewr 5 Special Occupancies | 511.4(B)(2) | Portable lighting equipment shall be equipped with a handle, lampholder, hook, and substantial guard attached to the lampholder or handle. All exterior surfaces that might come in contact with battery terminals, wiring terminals, or other objects shall be of nonconducting material or shall be effectively protected with... | https://2023.antflix.net#511.4(B)(2) |
Chaptewr 5 Special Occupancies | 511.7(A)(1) | Fixed wiring above hazardous (classified) locations shall be permitted to be one or more of the following:Rigid metal conduit (RMC) or intermediate metal conduit (IMC) with listed threaded or threadless fittings, or electrical metallic conduit (EMT) with listed fittings.Rigid polyvinyl chloride conduit (PVC), reinforce... | https://2023.antflix.net#511.7(A)(1) |
Chaptewr 5 Special Occupancies | 511.7(A)(2) | For pendants, flexible cord suitable for the type of service and listed for hard usage shall be used. [511.7(A)(2)](https://2023.antflix.net#511.7(A)(2)) | https://2023.antflix.net#511.7(A)(2) |
Chaptewr 5 Special Occupancies | 511.7(B)(1) | Electrical equipment in a fixed position shall be located above the level of any defined hazardous (classified) location or shall be identified for the location. Arcing Equipment. Equipment that is less than 3.7 m (12 ft) above the floor level and that might produce arcs, sparks, or particles of hot metal, such as cuto... | https://2023.antflix.net#511.7(B)(1) |
Chaptewr 5 Special Occupancies | 511.8 | Underground wiring shall be installed in accordance with one of the following wiring methods: Threaded rigid metal conduit (RMC) or threaded intermediate metal conduit (IMC) with listed threaded fittings.Rigid polyvinyl chloride conduit (PVC), reinforced thermosetting resin conduit (RTRC), or high-density polyethylene ... | https://2023.antflix.net#511.8 |
Chaptewr 5 Special Occupancies | 511.9 | Seals complying with the requirements of 501.15 and 501.15(B)(2) shall be provided and shall apply to horizontal as well as vertical boundaries of the defined Class I locations. [511.9](https://2023.antflix.net#511.9) | https://2023.antflix.net#511.9 |
Chaptewr 5 Special Occupancies | 511.10(A) | Battery chargers and their control equipment, and batteries being charged, shall not be located within locations classified in 511.3. [511.10(A)](https://2023.antflix.net#511.10(A)) | https://2023.antflix.net#511.10(A) |
Chaptewr 5 Special Occupancies | 511.10(B)(1) | All electrical equipment and wiring shall be installed in accordance with Part III of Article 625, except as required by 511.10(B)(2) and (B)(3). Flexible cords shall be of a type identified for extra-hard usage. [511.10(B)(1)](https://2023.antflix.net#511.10(B)(1)) | https://2023.antflix.net#511.10(B)(1) |
Chaptewr 5 Special Occupancies | 511.10(B)(2) | No connector shall be located within a Class I location as defined in 511.3. [511.10(B)(2)](https://2023.antflix.net#511.10(B)(2)) | https://2023.antflix.net#511.10(B)(2) |
Chaptewr 5 Special Occupancies | 511.10(B)(3) | Where the cord is suspended from overhead, it shall be arranged so that the lowest point of sag is at least 150 mm (6 in.) above the floor. Where an automatic arrangement is provided to pull both cord and plug beyond the range of physical damage, no additional connector shall be required in the cable or at the outlet. ... | https://2023.antflix.net#511.10(B)(3) |
Chaptewr 5 Special Occupancies | 511.12 | Ground-fault circuit-interrupter protection for personnel shall be provided as required in 210.8(B). [511.12](https://2023.antflix.net#511.12) | https://2023.antflix.net#511.12 |
Chaptewr 5 Special Occupancies | 511.16(A) | All metal raceways, the metal armor or metallic sheath on cables, and all non—current-carrying metal parts of fixed or portable electrical equipment, regardless of voltage, shall be grounded. [511.16(A)](https://2023.antflix.net#511.16(A)) | https://2023.antflix.net#511.16(A) |
Chaptewr 5 Special Occupancies | 511.16(B) | Grounding in Class I locations shall comply with 501.30. [511.16(B)](https://2023.antflix.net#511.16(B)) | https://2023.antflix.net#511.16(B) |
Chaptewr 5 Special Occupancies | 511.16(B)(1) | Where a circuit supplies portables or pendants and includes a grounded conductor in accordance with 200.3, receptacles, attachment plugs, connectors, and similar devices shall be of the grounding type and the grounded conductor of the flexible cord shall be connected to the screw shell of any lamp-holder or to the grou... | https://2023.antflix.net#511.16(B)(1) |
Chaptewr 5 Special Occupancies | 511.16(B)(2) | Approved means shall be provided for maintaining continuity of the equipment grounding conductor between the fixed wiring system and the non—current-carrying metal portions of pendant luminaires, portable luminaires, and portable utilization equipment. [511.16(B)(2)](https://2023.antflix.net#511.16(B)(2)) | https://2023.antflix.net#511.16(B)(2) |
Chaptewr 5 Special Occupancies | 512.1 | This article covers cannabis oil preparatory equipment, extraction equipment, booths, postprocessing equipment, and systems using flammable materials (flammable gas, flammable liquid—produced vapor, combustible liquid-produced vapor) in commercial and industrial facilities. Informational Note No. 1: See ANSI/UL 1389, P... | https://2023.antflix.net#512.1 |
Chaptewr 5 Special Occupancies | 512.2 | In addition to the requirements of this article, cannabis oil equipment and cannabis oil systems using flammable materials shall comply with Table 512.2, as applicable, except as modified by this article. Table 512.2 Other Articles Requirement Division Classified Locations Zone Classified Locations Area classifi... | https://2023.antflix.net#512.2 |
Chaptewr 5 Special Occupancies | 512.3 | Cannabis oil equipment and systems that can release flammable materials during operation shall be classified in accordance with 512.3(A) and (B). Informational Note No. 1: Some cannabis oil applications can result in the release of heavier-than-air flammable gases or vapors into the surrounding atmosphere as a normal p... | https://2023.antflix.net#512.3 |
Chaptewr 5 Special Occupancies | 512.3(A)(1) | For sources of gases or vapors from a flammable material, the location shall be classified in accordance with the following and as shown in Figure 512.3(A)(1): The space within 915 mm (3 ft) in all directions from any such equipment or container and extending to the floor or grade level shall be classified as Class I, ... | https://2023.antflix.net#512.3(A)(1) |
Chaptewr 5 Special Occupancies | 512.3(A)(2) | Where listed equipment is marked to indicate that the level of release during disconnection or opening is maintained below 25 percent LFL without ventilation, flammable solvents shall not be released during the extraction process except during disconnecting or opening of vessels containing flammable solvents, or during... | https://2023.antflix.net#512.3(A)(2) |
Chaptewr 5 Special Occupancies | 512.3(B) | Air exhausted from the booths shall not be recirculated or exhausted from the booths into the room in which the booths are installed. Ventilation other than exhaust ventilation can be provided to the booth, but cannot be recirculated or exhausted from the booth into the room in which the booth is installed. [512.3(B)](... | https://2023.antflix.net#512.3(B) |
Chaptewr 5 Special Occupancies | 512.3(B)(1) | For sources of gas or vapor from a flammable material, the location shall be classified in accordance with the following and as shown in Figure 512.3(B)(1): The space within the booth shall be classified as Class I, Division 1 or Zone 1, whichever is applicable.The space within 915 mm (3 ft) of any opening shall be cla... | https://2023.antflix.net#512.3(B)(1) |
Chaptewr 5 Special Occupancies | 512.3(B)(2) | Where listed equipment is marked to indicate that the level of release during disconnection or opening is maintained below 25 percent LFL without ventilation, flammable solvents shall not be released during the extraction process except during disconnecting or opening of vessels containing flammable solvents, or during... | https://2023.antflix.net#512.3(B)(2) |
Chaptewr 5 Special Occupancies | 512.10 | All wiring installed or operated within any of the hazardous (classified) locations defined in 512.3 shall comply with the requirements of Part II of Article 501 or 505.15, as applicable, for the division or zone location in which it is installed. [512.10](https://2023.antflix.net#512.10) | https://2023.antflix.net#512.10 |
Chaptewr 5 Special Occupancies | 512.13 | Other than above cannabis oil booths, all fixed wiring installed at an elevation above hazardous (classified) locations [see Figure 512.3(A)(1) and Figure 512.3(A)(2)] shall be in metal raceways, PVC conduit, RTRC conduit, or ENT conduit. Where used, cables shall be Type MI, Type TC, or Type MC. [512.13](https://2023.a... | https://2023.antflix.net#512.13 |
Chaptewr 5 Special Occupancies | 512.20 | Installation of cannabis oil equipment and systems shall be in a distinct room or area located at commercial or industrial facilities. Where all electrical equipment within cannabis oil booths is listed for Class I, Division 1 or Zone 1 locations, gas detection shall not be required to be provided within the booth. Whe... | https://2023.antflix.net#512.20 |
Chaptewr 5 Special Occupancies | 512.20(A) | Equipment that is used to prepare the plant material for subsequent extraction of the plant oil (e.g., trimming, deseeding, drying/curing) shall be listed for the location. [512.20(A)](https://2023.antflix.net#512.20(A)) | https://2023.antflix.net#512.20(A) |
Chaptewr 5 Special Occupancies | 512.20(B) | Equipment that uses flammable materials (solvents) in the process of extracting the plant oil from the plant material shall be listed for the location. Informational Note: Extraction equipment can use flammable materials as solvents to extract the plant oil from the plant material by saturating the plant material in a ... | https://2023.antflix.net#512.20(B) |
Chaptewr 5 Special Occupancies | 512.20(C) | Enclosed areas used to house cannabis oil equipment and systems shall be listed for the location. Informational Note: Cannabis oil booths can be designed to house a single piece or multiple pieces of cannabis oil equipment. Booths range in size and can be large enough to permit entrance of personnel to perform the proc... | https://2023.antflix.net#512.20(C) |
Chaptewr 5 Special Occupancies | 512.20(D) | Equipment that is used in the final processing stages of the extracted plant oil (e.g., vacuum ovens, rotary evaporators, solvent recovery pumps) shall be listed for the location. [512.20(D)](https://2023.antflix.net#512.20(D)) | https://2023.antflix.net#512.20(D) |
Chaptewr 5 Special Occupancies | 512.20(E) | Any combination of cannabis oil equipment needed for the overall extraction process (e.g., cannabis oil preparatory equipment, cannabis oil extraction equipment, cannabis oil booths, cannabis oil post-processing equipment) shall be listed for the location. Informational Note: See NFPA 70B, Recommended Practice for Elec... | https://2023.antflix.net#512.20(E) |
Chaptewr 5 Special Occupancies | 512.22 | All equipment installed or operated within any of the classified locations defined in 512.3 shall comply with the requirements of Part III of Article 501 or 505.9, as applicable, for the division or zone area in which they are used. [512.22](https://2023.antflix.net#512.22) | https://2023.antflix.net#512.22 |
Chaptewr 5 Special Occupancies | 512.30 | Equipment that could produce arcs, sparks, or hot metal particles, such as lamps and lampholders for fixed lighting, cutouts, switches, receptacles, motors, or other equipment having make-and-break or sliding contacts, where installed above a classified location other than cannabis oil booths, shall be of the totally e... | https://2023.antflix.net#512.30 |
Chaptewr 5 Special Occupancies | 512.32 | Cannabis oil preparatory equipment, extraction equipment, booths, and post-processing equipment shall be listed and marked to show the hazardous (classified) location for which it is permitted to be installed. [512.32](https://2023.antflix.net#512.32) | https://2023.antflix.net#512.32 |
Chaptewr 5 Special Occupancies | 512.32(A) | Equipment for Class I, Division 1 or Class I, Division 2 shall be marked in accordance with 500.8(C). [512.32(A)](https://2023.antflix.net#512.32(A)) | https://2023.antflix.net#512.32(A) |
Chaptewr 5 Special Occupancies | 512.32(B) | Equipment for Zone 1 or Zone 2 shall be marked in accordance with 500.8(C)(2). [512.32(B)](https://2023.antflix.net#512.32(B)) | https://2023.antflix.net#512.32(B) |
Chaptewr 5 Special Occupancies | 513.1 | This article shall apply to buildings or structures in any part of which aircraft containing Class I (flammable) liquids or Class II (combustible) liquids whose temperatures are above their flash points are housed or stored and in which aircraft might undergo service, repairs, or alterations. It shall not apply to loca... | https://2023.antflix.net#513.1 |
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