Sealing requirements in Sections 501-5(a)(4) and (b)(2) shall

apply to horizontal as well as to vertical boundaries of the defined Class I 70-520 NATIONAL ELECTRICAL CODE locations. Buried raceways under defined Class I locations shall be considered to be within a Class I, Division 1 location. 515-7. Gasoline Dispensing. Where gasoline dispensing is carried on in conjunction with bulk station operations, the applicable provisions of Article 514 shall apply. 515-8. Grounding. All metal raceways, metal-jacketed cables, and all noncurrent-carrying metal parts of electric equipment shall be grounded as provided in Article 250. Grounding in Class I areas shall comply with Section 501-16. (FPN): For information on grounding for static protection, see Sections 5-4.4.1.2 and 5-4.4.1.7 of Flammable and Combustible Liquids Code, NFPA 30-1990 (ANSI).