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149 to read as follows: 336-3. Uses Permitted. Type NM and Type NMC cables shall be permitted to be used in one- and two-family dwellings, multifamily dwellings and other structures, except as prohibited in Section 336-4. Where installed in cable trays, cables shall be identified for this use. (FPN) See Section 310-10 for temperature limitation of conductors. (a) Type NM. Type NM cable shall be permitted for concealed work in normally dry locations. It shall be permissible to install or fish Type NM cable in air voids in masonry block or tile walls where such walls are not exposed or subject to excessive moisture or dampness. (b) Type NMe. Type NMC cable shall be permitted: (1) for concealed work in dry, moist, damp, or corrosive locations; (2) in outside and inside walls of masonry block or tile; (3) in a shallow chase in masonry, concrete, or adobe protected against nails or screws by a steel plate at least 1/16 inch (1.59 mm) thick and covered with plaster, adobe, or similar finish. SECTION 6: That the Santa Ana Municipal Code is hereby amended by adding a section, to be numbered 8-942, which said section reads as follows: Sec. 8-942. Uses not permitted (Section 336-4). Section 336-4 of the National Electrical Code is amended to read as follows: 336-4. Uses Not Permitted. (a) Type NM or NMC. Types NM and NMC cables shall not be used: (1) in any dwelling or structure exceeding three floors above grade; (2) as service-entrance cable; (3) in any nonresidential building or structure; (4) in hoist- ways; or (5) embedded in poured cement, concrete, or aggregate. For the purpose of this article, the first floor of a building shall be that floor that has fifty percent or more of the exterior wall surface area level with or above finished grade. One additional level that is the first level and not designed for human habitation and used only for vehicle parking, storage, or similar use shall be permitted.