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

(FPN No. 3): For protection against liquids, see Section 430-11. (b) Wiring Methods. The electric motor and controller shall be connected to a circuit protected by a ground-fault circuit-interrupter. 680-27. Deck Area Heating. The provisions of this section apply to all pool deck areas, including a covered pool, where electrically operated comfort heating units are installed within 20 feet (6.1 m) of the inside wall of the pool. (a) Unit Heaters. Unit heaters shall be rigidly mounted to the structure and shall be of the totally enclosed or guarded types. Unit heaters shall not be mounted over the pool or within the area extending 5 feet (1.52 m) horizontally from the inside walls of a pool. (b) Permanently Wired Radiant Heaters. Radiant electric heaters shall be suitably guarded and securely fastened to their mounting device(s). Heaters shall not be installed over a pool or within the area extending 5 feet (1.52 m) horizontally from the inside walls of the pool and shall be mounted at least 12 feet (3.66 m) vertically above the pool deck unless otherwise approved. (c) Radiant Heat Cables Not Permitted. Radiant heating cables embedded in or below the deck shall not be permitted. C. Storable Pools 680-30. Pumps. A cord-connected pool filter pump shall incorporate an approved system of double insulation or its equivalent and shall be provided with means for grounding only the internal and nonaccessible noncurrent-carrying metal parts of the appliance. The means for grounding shall be an equipment grounding conductor run with the power-supply conductors in the flexible cord that is properly terminated in a grounding-type attachment plug having a fixed grounding contact member. ARTICLE 680 - SWIMMING POOLS, FOUNTAINS 70-707 680-31. Ground-Fault Circuit-Interrupters Required. All electric equipment, including power-supply cords, used with storable pools shall be protected by ground-fault circuit-interrupters. (FPN): Where flexible cords are used, see Section 400-4. 680-32. Lighting Fixtures. A lighting fixture installed in or on the wall of a storable pool shall be part of a cord- and plug-connected lighting assembly. This assembly shall: (1) Have no exposed metal parts; (2) Have a fixture lamp that operates at 15 volts or less; (3) Have an impact-resistant polymeric lens, fixture body, and transformer enclosure; (4) Have a transformer meeting the requirements of Section 680-5(a) with a primary rating not over 150 volts; and (5) Be listed as an assembly for the purpose. Exception: A lighting assembly without a transformer, and with the fixture lamp(s) operating at not over 150 volts, shall be permitted to be cordand plug-connected where the assembly complies with all of the following: a. It has no exposed metal parts. b. It has an impact-resistant polymeric lens and fixture body. C. A ground-fault circuit-interrupter with open neutral protection is provided as an integral part of the assembly. d. The fixture lamp is permanently connected to the ground-fault circuit-interrupter with open-neutral protection. e. It complies with the requirements of Section 680-20(a). f. It is listed as an assembly for the purpose. D. Spas and Hot Tubs 680-40. Outdoor Installations. A spa or hot tub installed outdoors shall comply with the provisions of Parts A and B. Exception No. 1: Metal bands or hoops used to secure wooden staves shall be exempt from Section 680-22. Exception No. 2: Listed packaged units shall be permitted to be cordand plug-connected with a cord no longer than 15 feet (4.57 m) if protected by a ground-fault circuit-interrupter. Exception No. 3: Bonding by metal-to-metal mounting on a common frame or base shall be permitted. Exception No. 4: Listed packaged units utilizing a factory-installed remote panelboard shall be permitted to be connected with not more than 3 feet (914 mm) of liquidtight flexible conduit. 680-41. Indoor Installations. A spa or hot tub installed indoors shall conform to the requirements of this part and shall be connected by wiring methods of Chapter 3. 70-708 NATIONAL ELECTRICAL CODE Exception: Listed packaged units rated 20 amperes or less shall be permitted to be cord- and plug-connected to facilitate the removal or disconnection for maintenance and repair. (a) Receptacles. At least one convenience receptacle shall be located a minimum of 5 feet (1.52 m) from and not more than 10 feet (3.05 m) from the inside wall of the spa or hot tub. (1) Receptacles on the property shall be located at least 5 feet (1.52 m) from the inside walls of the spa or hot tub. (2) 125-volt receptacles located within 10 feet (3.05 m) of the inside walls of a spa or hot tub shall be protected by a ground-fault circuitinterrupter. (FPN): In determining the above dimensions, the distance to be measured is the shortest path the supply cord of an appliance connected to the receptacle would follow without piercing a floor, wall, or ceiling of a building or other effective permanent barrier. (3) Receptacles that provide power for a spa or hot tub shall be ground-fault circuit-interrupter protected. (b) Lighting Fixtures, Lighting Outlets, and Ceiling Fans. (1) Lighting fixtures, lighting outlets, and ceiling fans located over the spa or hot tub or within 5 feet (1.52 m) from the inside walls of the spa or hot tub shall be a minimum of 7 feet 6 inches (2.29 m) above the maximum water level and shall be protected by a ground-fault circuit-interrupter. Exception No. 1: Lighting fixtures, lighting outlets, and ceiling fans located 12 feet (3.66 m) or more above the maximum water level shall not require protection by a ground-fault circuit-interrupter. Exception No. 2: Lighting fixtures meeting the requirements of items a or b below and protected by a ground-fault circuit-interrupter shall be permitted to be installed less than 7 feet 6 inches (2.29 m) over a spa or hot tub. a. Recessed fixtures with a glass or plastic lens and nonmetallic or electrically isolated metal trim, suitable for use in damp locations. b. Surface-mounted fixtures with a glass or plastic globe and a nonmetallic body or a metallic body isolated from contact. Such fixtures shall be suitable for use in damp locations. (2) Underwater lighting fixtures shall comply with the provisions of Part B or Part C of this article. (c) Wall Switches. Switches shall be located at least 5 feet (1.52 m), measured horizontally, from the inside walls of the spa or hot tub. (d) Bonding. The following parts shall be bonded together: (1) All metal fittings within or attached to the spa or hot tub structure. (2) Metal parts of electric equipment associated with the spa or hot tub water circulating system, including pump motors. (3) Metal conduit and metal piping within 5 feet (1.52 m) of the inside walls of the spa or hot tub and that are not separated from the spa or hot tub by a permanent barrier. ARTICLE 680 - SWIMMING POOLS, FOUNTAINS 70-709 (4) All metal surfaces that are within 5 feet (1.52 m) of the inside walls of the spa or hot tub and not separated from the spa or hot tub area by a permanent barrier. Exception: Small conductive surfaces not likely to become energized, such as air and water jets and drain fittings, where not connected to metallic piping, towel bars, mirror frames, and similar nonelectric equipment, need not be bonded. (5) Electrical devices and controls not associated with the spas or hot tubs shall be located a minimum of 5 feet (1.52 m) away from such units or be bonded to the spa or hot tub system. (e) Methods of Bonding. All metal parts associated with the spa or hot tub shall be bonded by any of the following methods: the interconnection of threaded metal piping and fittings; metal-to-metal mounting on a common frame or base; or by the provisions of a copper bonding jumper, insulated, covered, or bare, not smaller than No. 8 solid. (f) Grounding. The following equipment shall be grounded: (1) All electric equipment located within 5 feet (1.52 m) of the inside wall of the spa or hot tub. (2) All electric equipment associated with the circulating system of the spa or hot tub. (g) Methods of Grounding. (1) All electric equipment shall be grounded in accordance with Article 250 and connected by the wiring methods of Chapter 3. (2) Where equipment is connected with a flexible cord, the equipment grounding conductor shall be connected to a fixed metal part of the assembly. (h) Electric Water Heaters. All electric spa or hot tub water heaters shall be listed and have the heating elements subdivided into loads not exceeding 48 amperes and protected at not more than 60 amperes. The ampacity of the branch-circuit conductors, and the rating or setting of overcurrent protective devices, shall not be less than 125 percent of the total load of the nameplate rating. (i) Underwater Audio Equipment. Underwater audio equipment shall comply with the provisions of Part B or Part C of this article. 680-42. Protection. Spas and hot tubs and associated electrical components shall be protected by ground-fault circuit-interrupters. This requirement shall become effective on January 1, 1994. E. Fountains 680-50. General. The provisions of Part E shall apply to all fountains as defined in Section 680-4. Fountains that have water common to a pool shall comply with the pool requirements of this article. Exception: Self-contained, portable fountains no larger than 5 feet (1.52 m) in any dimension are not covered by Part E. 70-710 NATIONAL ELECTRICAL CODE 680-51. Lighting Fixtures, Submersible Pumps, and Other Submersible Equipment. (a) Ground-Fault Circuit-Interrupter. A ground-fault circuit-interrupter shall be installed in the branch circuit supplying fountain equipment. Exception: Ground-fault circuit-interrupters shall not be required for equipment operating at 15 volts or less and supplied by a transformer complying with Section 680-5(a). (b) Operating Voltage. All lighting fixtures shall be installed for operation at 150 volts or less between conductors. Submersible pumps and other submersible equipment shall operate at 300 volts or less between conductors. (c) Lighting Fixture Lenses. Lighting fixtures shall be installed with the top of the fixture lens below the normal water level of the fountain unless approved for above-water locations. A lighting fixture facing upward shall have the lens adequately guarded to prevent contact by any person. (d) Overheating Protection. Electric equipment that depends on submersion for safe operation shall be protected against overheating by a lowwater cutoff or other approved means when not submerged. (e) Wiring. Equipment shall be equipped with provisions for threaded conduit entries or be provided with a suitable flexible cord. The maximum length of exposed cord in the fountain shall be limited to 10 feet (3.05 m). Cords extending beyond the fountain perimeter shall be enclosed in approved wiring enclosures. Metal parts of equipment in contact with water shall be of brass or other approved corrosion-resistant metal. (f) Servicing. All equipment shall be removable from the water for relamping or normal maintenance. Fixtures shall not be permanently imbedded into the fountain structure so that the water level must be reduced or the fountain drained for relamping, maintenance, or inspection. (g) Stability. Equipment shall be inherently stable or be securely fastened in place. 680-52. Junction Boxes and Other Enclosures. (a) General. Junction boxes and other enclosures used for other than underwater installation shall comply with Sections 680-21(a) (1), (2), and (3); and (b), (c), and (d). (b) Underwater Junction Boxes and Other Underwater Enclosures. Junction boxes and other underwater enclosures shall be submersible and (1) be equipped with provisions for threaded conduit entries or compression glands or seals for cord entry; (2) be of copper, brass, or other approved corrosion-resistant material; (3) be filled with an approved potting compound to prevent the entry of moisture; and (4) be firmly attached to the supports or directly to the fountain surface and bonded as required. Where the junction box is supported only by the conduit, the conduit shall be of copper, brass, or other approved corrosion-resistant metal. Where the box is fed by nonmetallic conduit, it shall have additional supports and fasteners of copper, brass, or other approved corrosion-resistant material. (FPN): See Section 370-23 for support of enclosures. ARTICLE 680 - SWIMMING POOLS, FOUNTAINS 70-711 680-53. Bonding. All metal piping systems associated with the fountain shall be bonded to the equipment grounding conductor of the branch circuit supplying the fountain. (FPN): See Section 250-95 for sizing of these conductors. 680-54. Grounding. The following equipment shall be grounded: (1) all electric equipment located within the fountain or within 5 feet (1.52 m) of the inside wall of the fountain; (2) all electric equipment associated with the recirculating system of the fountain; (3) panelboards that are not part of the service equipment and that supply any electric equipment associated with the fountain. 680-55. Methods of Grounding. (a) Applied Provisions. The provisions of Section 680-25 shall apply, excluding paragraph (e). (b) Supplied by a Flexible Cord. Electric equipment that is supplied by a flexible cord shall have all exposed noncurrent-carrying metal parts grounded by an insulated copper equipment grounding conductor that is an integral part of this cord. This grounding conductor shall be connected to a grounding terminal in the supply junction box, transformer enclosure, or other enclosure. 680-56. Cord- and Plug-Connected Equipment. (a) Ground-Fault Circuit-Interrupter. All electric equipment, including power-supply cords, shall be protected by ground-fault circuit-interrupters. (b) Cord Type. Flexible cord immersed in or exposed to water shall be of the hard service type as designated in Table 400-4 and shall be marked water-resistant. (c) Sealing. The end of the flexible cord jacket and the flexible cord conductor termination within equipment shall be covered with, or encapsulated in, a suitable potting compound to prevent the entry of water into the equipment through the cord or its conductors. In addition, the ground connection within equipment shall be similarly treated to protect such connections from the deteriorating effect of water that may enter into the equipment. (d) Terminations. Connections with flexible cord shall be permanent, except that grounding-type attachment plugs and receptacles shall be permitted to facilitate removal or disconnection for maintenance, repair, or storage of fixed or stationary equipment not located in any watercontaining part of a fountain. F. Therapeutic Pools and Tubs in Health Care Facilities 680-60. General. The provisions of Part F include therapeutic pools and tubs in health care facilities. See Section 517-2 for definition of health care facilities. Portable therapeutic appliances. shall comply with Article 422. 680-61. Permanently Installed Therapeutic Pools. Therapeutic pools that are constructed in the ground, on the ground, or in a building in such a manner that the pool cannot be readily disassembled shall comply with Parts A and B of this article. 70-712 NATIONAL ELECTRICAL CODE Exception: The limitations of Sections 680-6(b)(1) and (2) shall not apply where all lighting fixtures are of the totally enclosed type. 680-62. Therapeutic Tubs (Hydrotherapeutic Tanks). Therapeutic tubs, used for the submersion and treatment of patients, that are not easily moved from one place to another in normal use or that are fastened or otherwise secured at a specific location, including associated piping systems, shall conform to this part. (a) Ground-Fault Circuit-Interrupter. A ground-fault circuit-interrupter shall protect all therapeutic equipment. Exception: Portable therapeutic appliances shall comply with Section 250-45. (b) Bonding. The following parts shall be bonded together: (1) All metal fittings within or attached to the tub structure. (2) Metal parts of electric equipment associated with the tub water circulating system, including pump motors. (3) Metal-sheathed cables and raceways and metal piping that are within 5 feet (1.52 m) of the inside walls of the tub and not separated from the tub by a permanent barrier. (4) All metal surfaces that are within 5 feet (1.52 m) of the inside walls of the tub and not separated from the tub area by a permanent barrier. (5) Electrical devices and controls not associated with the therapeutic tubs shall be located a minimum of 5 feet (1.52 m) away from such units or be bonded to the therapeutic tub system. (c) Methods of Bonding. All metal parts associated with the tub shall be bonded by any of the following methods: the interconnection of threaded metal piping and fittings; metal-to-metal mounting on a common frame or base; connections by suitable metal clamps; or by the provisions of a solid I copper bonding jumper, insulated, covered, or bare, not smaller than No. 8. (d) Grounding. The following equipment shall be grounded: (1) All electric equipment located within 5 feet (1.52 m) of the inside wall of the tub. (2) All electric equipment associated with the circulating system of the tub. (e) Methods of Grounding. (1) All electric equipment shall be grounded in accordance with Article 250 and connected by wiring methods of Chapter 3. (2) Where equipment is connected with a flexible cord, the equipment grounding conductor shall be connected to a fixed metal part of the assembly. (f) Receptacles. All receptacles within 5 feet (1.52 m) of a therapeutic tub shall be protected by a ground-fault circuit-interrupter. (g) Lighting Fixtures. All. lighting fixtures used in therapeutic tub areas shall be of the totally enclosed type.