Resolución 2535: adopta el Código Eléctrico Nacional, versión 1993. (Sustituye el Anejo A del Reglamento 4435)

374-9. Construction and Installation. Auxiliary gutters shall comply with (a) through (f) below. (a) Electrical and Mechanical Continuity. Gutters shall be so constructed and installed that adequate electrical and mechanical continuity of the complete system will be secured. (b) Substantial Construction. Gutters shall be of substantial construction and shall provide a complete enclosure for the contained conductors. All surfaces, both interior and exterior, shall be suitably protected from corrosion. Corner joints shall be made tight and, where the assembly is held together by rivets or bolts, shall be spaced not more than 12 inches (305 mm) apart. (c) Smooth Rounded Edges. Suitable bushings, shields, or fittings having smooth, rounded edges shall be provided where conductors pass between gutters, through partitions, around bends, between gutters and cabinets or junction boxes, and at other locations where necessary to prevent abrasion of the insulation of the conductors. 70-296 NATIONAL ELECTRICAL CODE (d) Deflected Insulated Conductors. Where insulated conductors are deflected within an auxiliary gutter, either at the ends or where conduits, fittings, or other raceways or cables enter or leave the gutter, or where the direction of the gutter is deflected greater than 30 degrees, dimensions corresponding to Section 373-6 shall apply. (e) Outdoor Use. Auxiliary gutters installed in wet locations shall be of raintight construction. (f) Grounding. Grounding shall be according to the provisions of Article 250.