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

Ethylene Table 402-3 (Continued) Max. Trade Type Thickness of Outer Operating Application Name Letter Insulation AWG Insulation Mils Covering Temp. Provisions Tape Insulated KF-1 Aromatic 18-10 5.5 None 200°C Fixture Wiring. Fixture Wire- Polyimide 392°F Limited to 300 volts. Solid or Tape 7-Strand KF-2 Aromatic 18-10 8.4 None 200°C Fixture wiring, and as permitted Polyimide 392°F in Sections 725-16 and 760-16. Tape Tape Insulated KFF-1 Aromatic 18-10 5.5 None 200°C Fixture Wiring. Fixture Wire- Polyimide 392°F Limited to 300 volts. Flexible Tape Stranding KFF-2 Aromatic 18-10 8.4 None 200°C Fixture wiring, and as permitted Polyimide 392°F in Section 725-16. Tape Perfluoro- PAF Perfluoro- 18-14 20 None 250°C Fixture wiring, and as permitted alkoxy-Solid alkoxy 482°F in Sections 725-16 and 760-16. or 7-Strand (Nickel or nickel-coated copper) ARTICLE 402 FIXTURE WIRES (Nickel or Nickel-Coated Copper) Perfluoro- PAFF Perfluoro- 18-14 20 None 150°C Fixture wiring, and as permitted alkoxyalkoxy 302°F in Section 725-16. Flexible Stranding Fluorinated PF Fluorinated 18-14 20 None 200°C Fixture wiring, and as permitted Ethylene Pro- Ethylene 392°F in Sections 725-16 and 760-16. pylene Fixture Propylene Wire-Solid or 7-Strand 70-325 Table 402-3 (Continued) Max. 70-326 Trade Type Thickness of Outer Operating Application Name Letter Insulation AWG Insulation Mils Covering Temp. Provisions Fluorinated PFF Fluorinated 18-14 20 None 150°C Fixture witing, and as permit- Ethylene Pro- Ethylene 302°F ted in Section 725-16. pylene Fixture Propylene Wire-Flexible Stranding Fluorinated PGF Fluorinated 18-14 14 Glass Braid 200°C Fixture wiring, and as permit- Ethylene Pro- Ethylene 392°F ted in Sections 725-16 and pylene Fixture Propylene 760-16. Wire-Solid or 7-Strand Fluorinated PGFF Fluorinated 18-14 14 Glass Braid 150°C Fixture wiring, and as permit- Ethylene Pro- Ethylene 302°F ted in Section 725-16. pylene Fixture Propylene Wire-Flexible NATIONAL ELECTRICAL CODE Stranding Extruded PTF Extruded 18-14 20 None 250°C Fixture wiring, and as permit- Polytetra- Polytetra- 482°F ted in Sections 725-16 and Fluoroethylene Fluoro- 760-16. (Nickel or nickel- Solid or ethylene coated copper) 7-Strand (Nickel or Nickel-Coated Copper) Table 402-3 (Continued) Max. Trade Type Thickness of Outer Operating Application Name Letter Insulation AWG Insulation Mils Covering Temp. Provisions Extruded PTFF Extruded 18-14 20 None 150°C Fixture wiring, and as permit- Polytetra- Polytetra- 302°F ted in Section 725-16. (Silver Fluoroethylene Fluoroethylene or nickel-coated copper) Flexible Stranding 26-36 AWG Silver or Nickel-Coated Copper) Heat-Resistant RFH-1 Heat-Resistant Nonmetallic 75°C Fixture wiring. Rubber- Rubber 18 15 Covering 167°F Limited to 300 volts. Covered Fixture Wire- Heat-Resistant Solid or Rubber 18-16 30 Nonmetallic 75°C Fixture wiring, and as permit- RFH-2 ted in Sections 725-16 and 7-Strand Covering 167°F Heat-Resistant 760-16. ARTICLE 402 FIXTURE WIRES Latex Rubber 18-16 18 Heat-Resistant RFHH-2* 18-16 30 Cross-Linked Synthetic Cross-Linked Synthetic 18-16 45 Polymer- Insulated Fix- Polymer Fixture wiring, and as permitted in Sections 725-16 and ture Wire- None or 760-16. Multiconductor cable Solid or Nonmetallic 90°C Stranded as permitted in Sections 725-16 RFHH-3* Covering 194°F and 760-16. * Insulations and outer coverings that meet the requirements of flame-retardant, limited-smoke and are so listed shall be permitted to be designated limited-smoke with the suffix /LS after the Code type designation. 70-327 Table 402-3 (Continued) Max. 70-328 Trade Type Thickness of Outer Operating Application Name Letter Insulation AWG Insulation Mils Covering Temp. Provisions Silicone Insu- Silicone Nonmetallic 200°C Fixture wiring. lated Fixture SF-1 Rubber 18 15 Covering 392°F Limited to 300 volts. Wire-Solid or 7-Strand Fixture wiring, and as permit- Silicone Nonmetallic 200°C ted in Sections 725-16 and SF-2 Rubber 18-14 30 Covering 392°F 760-16. Silicone Insu- Silicone Nonmetallic 150°C Fixture wiring. lated Fixture SFF-1 Rubber 18 15 Covering 302°F Limited to 300 volts. Wire-Flexible Stranding Silicone Nonmetallic 150°C Fixture wiring, and as permit- SFF-2 Rubber 18-14 30 Covering 302°F ted in Section 725-16. Thermoplastic Covered Fix- 60°C Fixture wiring, and as permitture Wire- TF* Thermoplastic 18-16 30 None ted in Sections 725-16 and 140°F Solid or 760-16. 7-Strand NATIONAL ELECTRICAL CODE Thermoplastic Covered Fix- 60°C ture Wire- TFF* Thermoplastic 18-16 30 None Fixture wiring, and as permit- 140°F ted in Section 725-16. Flexible Stranding Heat-Resistant Thermoplastic- Covered Fix- Nylon- 90°C Fixture wiring, and as permit- TFN* Thermoplastic 18-16 15 Jacketed or ted in Sections 725-16 and ture Wire- 194°F equivalent 760-16. Solid or 7-Strand *Insulations and outer coverings that meet the requirements of flame-retardant limited-smoke and are so listed shall be permitted to be designated limited-smoke with the suffix /LS after the Code type designation. Table 402-3 (Continued) Max. Trade Type Thickness of Outer Operating Application Name Letter Insulation AWG Insulation Mils Covering Temp. Provisions Heat-Resistant Thermoplastic Covered Fix- Nylon- 90°C TFFN* Thermoplastic 18-16 15 Jacketed or Fixture wiring, and as permitture Wire- 194°F ted in Section 725-16. Flexible equivalent Stranded Cross-Linked XF* Cross-Linked 18-14 30 None 150°C Fixture wiring. Polyolefin In- Polyolefin 12-10 45 302°F Limited to 300 volts. sulated Fixture Wire-Solid or 7-Strand Cross-Linked XFF* Cross-Linked 18-14 30 None 150°C Fixture wiring. Polyolefin In- Polyolefin 12-10 45 302°F Limited to 300 volts. sulated Fixture Wire-Flexible Stranded Modified ZF Modified 18-14 15 None 150°C Fixture wiring, and as permit- ARTICLE 402 FIXTURE WIRES ETFE Ethylene 302°F ted in Sections 725-16 and Solid or Tetrafluoro- 760-16. 7-Strand Ethylene Flexible ZFF Modified 18-14 15 None 150°C Fixture wiring, and as permit- Stranding Ethylene 302°F ted in Section 725-16. Tetrafluoro- Ethylene High Temp. ZHF Modified 18-14 15 None 200°C Fixture wiring, and as permit- Modified Ethylene 392°F ted in Sections 725-16 and ETFE-Solid Tetrafluoro- 760-16 or 7-Strand ethylene 70-329 * Insulations and outer coverings that meet the requirements of flame-retardant, limited-smoke and are so listed shall be permitted to be designated limited-smoke with the suffix /LS after the Code type designation. 70-330 NATIONAL ELECTRICAL CODE Table 402-5. Size (AWG) Allowable Ampacity 18 6 16 8 14 17 12 23 10 28 402-6. Minimum Size. Fixture wires shall not be smaller than No. 18. 402-7. Number of Conductors in Conduit or Tubing. The number of fixture wires permitted in a single conduit or tubing shall be as shown in Table 2 of Chapter 9. 402-8. Grounded-Conductor Identification. One conductor of fixture wires that is intended to be used as a grounded conductor shall be identified by means of stripes or by the means described in Sections 400-22(a) through (e). 402-9. Marking. (a) Required Information. All fixture wires shall be marked to indicate the information required in Section 310-11(a). (b) Method of Marking. Thermoplastic-insulated fixture wire shall be durably marked on the surface at intervals not exceeding 24 inches (610 mm). All other fixture wire shall be marked by means of a printed tag attached to the coil, reel, or carton. (c) Optional Marking. Fixture wire types listed in Table 402-3 shall be permitted to be surface marked to indicate special characteristics of the cable materials. (FPN): Examples of these markings include, but are not limited to, "LS" for limited-smoke or markings such as "sunlight-resistant." 402-10. Uses Permitted. Fixture wires shall be permitted (1) for installation in lighting fixtures and in similar equipment where enclosed or protected and not subject to bending or twisting in use, or (2) for connecting lighting fixtures to the branch-circuit conductors supplying the fixtures. 402-11. Uses Not Permitted. Fixture wires shall not be used as branchcircuit conductors. Exception: As permitted by Section 725-16 for Class 1 circuits and Section 760-16 for fire protective signaling circuits. 402-12. Overcurrent Protection. Overcurrent protection for fixture wires shall be as specified in Section 240-4.