Locations.
(A) Wiring in Spaces Above Class I Locations.
(1) Fixed Wiring Above Class I Locations. All fixed wiring above Class I locations shall be in metal raceways, rigid nonmetallic conduit, electrical nonmetallic tubing, flexible metal conduit, liquidtight flexible metal conduit, or liq-uidtight flexible nonmetallic conduit, or shall be Type MC, AC, MI, manufactured wiring systems, or PLTC cable in accordance with Article 725, or Type TC cable or Type ITC cable in accordance with Article 727. Cellular metal floor raceways or cellular concrete floor raceways shall be permitted to be used only for supplying ceiling outlets or extensions to the area below the floor, but such raceways shall have no connections leading into or through any Class I location above the floor.
(2) Pendant. For pendants, flexible cord suitable for the type of service and listed for hard usage shall be used.
(B) Electrical Equipment Installed Above Class I Locations.
(1) Fixed Electrical Equipment Electrical equipment in a fixed position shall be located above the level of any defined Class I location or shall be identified for the location.
(a) Arcing Equipment. Equipment that is less than 3.7 m (12 ft)
above the floor level and that may produce arcs, sparks, or
particles of hot metal, such as cutouts, switches, charging panels, generators, motors, or other equipment (excluding receptacles, lamps, and landholders) having make-and-break or sliding contacts, shall be of the totally enclosed type or constructed so as to prevent the escape of sparks or hot metal particles.
(b) Fixed Lighting. Lamps and landholders for fixed lighting that is located over lanes through which vehicles are commonly driven or that may otherwise be exposed to physical damage shall be located not less than 3.7 m (12 ft) above floor level, unless of the totally enclosed type or constructed so as to prevent escape of sparks or hot metal particles.
511.9 Sealing. 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.
511.10 Special Equipment.
(A) Battery Charging Equipment. Battery chargers and their control equipment, and batteries being charged, shall not be located within locations classified in 511.3.
(B) Electric Vehicle Charging Equipment.
(1) General. All electrical equipment and wiring shall be installed in accordance with Article 625, except as noted in 511.10(B)(2) and (B)(3). Flexible cords shall be of a type identified for extra-hard usage.
(2) Connector Location. No connector shall be located within a Class I location as defined in 511.3.
(3) Plug Connections to Vehicles. Where the cord is sus- pended 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.