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

300-23. Panels Designed to Allow Access. Cables, raceways, and equipment installed behind panels designed to allow access including suspended ceiling panels shall be so arranged and secured as to allow the removal of panels and access to the equipment. B. Requirements for Over 600 Volts, Nominal 300-31. Covers Required. Suitable covers shall be installed on all boxes, fittings, and similar enclosures to prevent accidental contact with energized parts or physical damage to parts or insulation. 300-32. Conductors of Different Systems. Conductors of high-voltage and low-voltage systems shall not occupy the same wiring enclosure or pull and junction boxes. Exception No. 1: In motors, switchgear and control assemblies, and similar equipment. Exception No. 2: In manholes, if extra-low or low-voltage conductors are separated from high-voltage conductors. 300-34. Conductor Bending Radius. The conductor shall not be bent to a radius less than eight times the overall diameter for nonshielded conductors or twelve times the diameter for shielded or lead-covered conductors during or after installation. 300-35. Protection Against Induction Heating. Metallic raceways and associated conductors shall be so arranged as to avoid heating of the raceway in accordance with the applicable provisions of Section 300-20. 300-36. Grounding. Wiring and equipment installations shall be grounded in accordance with the applicable provisions of Article 250. 300-37. Underground Installations. The minimum cover requirements shall be in accordance with Section 710-4(b).