1.1 These requirements cover Type MC-HL metal-clad cable for use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D; Class II, Division 1, Groups E, F, and G; Zone 1, Groups IIA, IIB, and IIC; and Zone 20, 21, and 22, Groups IIIA, IIIB and IIIC in accordance with the National Electrical Code, NFPA 70.

1.2 These requirements cover Type ITC-HL instrumentation tray cable for use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D, and Zone 1, Groups IIA, IIB, and IIC; and Zone 20, 21, and 22, Groups IIIA, IIIB and IIIC in accordance with the National Electrical Code, NFPA 70.

1.3 These requirements cover Type TC-ER-HL tray cable for use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D, Zone 1, Groups IIA, IIB, and IIC in accordance with the National Electrical Code, NFPA 70.

1.4 These requirements cover explosionproof and dust-ignitionproof cable sealing fittings for use in hazardous (classified) locations, Class I, Division 1 and 2, Groups A, B, C, and D; Class II, Division 1 and 2, Groups E, F, and G in accordance with the National Electrical Code, NFPA 70.

1.5 These requirements cover flameproof "d", increased safety "e", Protection by enclosure "t", explosionproof and dust-ignitionproof cable fittings for Type P cable in accordance with the National Electrical Code, NFPA 70. For offshore installations, investigations of these fittings include an evaluation for conformity to the installation and use provisions of Title 46 Code of Federal Regulations Sub-part 111.105 and Subpart 111.60 of the United States Coast Guard Electrical Engineering Regulations, Subchapter J (Parts 110 to 113 inclusive) as applied by the authority having jurisdiction.

1.6 These requirements cover flameproof “d”, increased safety "e", Protection by enclosure “t”, explosionproof and dust-ignitionproof cable fittings for Type P cable in accordance with the National Electrical Code, NFPA 70.

1.7 These requirements cover increased safety "e" cord connectors and flameproof "d" cord connectors for use only with extra-hard usage cord in hazardous (classified) locations, Zone 1 in accordance with the National Electrical Code, NFPA 70.

1.8 These requirements cover dust ignition protection by enclosure "t" and "tD" cable fittings for use in Zone 20, 21, and 22, Groups IIIA, IIIB and IIIC hazardous (classified) locations in accordance with the National Electrical Code, NFPA 70.

1.9 These requirements cover dust ignition protection by enclosure "t" and "tD" extra-hard usage cord connectors for use in Zone 20, 21, and 22, Groups IIIA, IIIB and IIIC in accordance with the National Electrical Code, NFPA 70.

1.10 These requirements apply to cables, cable fittings and cord connectors for hazardous locations under the following atmospheric conditions:

1. a) A minimum ambient temperature of minus 60 °C (minus 76 °F);

2. b) An oxygen concentration of not greater than 21 percent by volume; and

3. c) A nominal barometric pressure of one atmosphere.