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ORDINANCE NO. NS-1416 PAGE ELEVEN Sec. 8-943. Exposed Work - General (Section 336-6). Article 336 of the National Electrical Code is amended by deleting therefrom Section 336-6. Sec. 8-945. Devices of Insulating Material (Section 336-11). Article 336 of the National Electrical Code is amended by deleting therefrom Section 336-11. Sec. 8-961. Use of Electrical Metal Tubing (Section 348-1). Section 348-1 of the National Electrical Code is amended to read as follows: 348-1. Use. Electrical metallic tubing may be used for both exposed and concealed work. Electrical metal- lic tubing protected from corrosion solely by enamel shall not be used. Electrical metallic tubing shall not be used (1) where during installation or afterwards, it will be subject to severe physical damage; (2) for installation underground or in concrete. Where prac- ticable the use of dissimilar metals throughout the system shall be avoided to eliminate the possibility of galvanic action. (3) Electrical metallic tubing shall not be used where exposed directly to the wea- ther or excessive moisture. Sec. 8-972. Use of Flexible Metal Conduit (Section 350-2). Section 350-2 of the National Electrical Code is amended to read as follows: 350-2. Use. Flexible metal conduit shall not be used (1) in wet locations unless conductors are of the lead-covered type or of other type specifically approved for the conditions; (2) in hoistways, other than as provided in Section 620-21; (3) in storage battery rooms; (4) in any hazardous location other than permitted in Sections 501-4(b), 502-4 and 503-3; nor (5) where rub- ber-covered conductors are exposed to oil, gasoline, or other materials having a deteriorating effect on rubber; (6) for installation underground, exposed to the water, embedded in masonry, concrete, adobe, plas- ter or similar finish; (7) where exposed to physical damage. Sec. 8-1018. Fixtures in Clothes Closets (Section 410-8). Section 410-8 of the National Electrical Code is amended by adding a sentence designated (c) to read as follows: (c) All lighting outlets shall be operated by a wall or door switch (no pull chain lighting fixtures per- mitted).