GASOLINE DISPENSING, SERVICE STATIONS 70-509

manently affixed warning sign to read: "WARNING - KEEP 5 FEET CLEAR OF AIRCRAFT ENGINES AND FUEL TANK AREAS." (b) Cords and Connectors. Flexible cords for mobile equipment shall be suitable for the type of service and approved for extra-hard usage and shall include an equipment grounding conductor. Attachment plugs and receptacles shall be approved for the location in which they are installed and shall provide for connection of the equipment grounding conductor. (c) Restricted Use. Equipment that is not identified as suitable for Class I, Division 2 locations shall not be operated in locations where maintenance operations likely to release flammable liquids or vapors are in progress. 513-12. Grounding. All metal raceways, metal-jacketed cables, and all noncurrent-carrying metal portions of fixed or portable equipment, regardless of voltage, shall be grounded as provided in Article 250.