402.1 Scope. This article covers general requirements and construction specifications for fixture wires.
402.2 Other Articles. Fixture wires shall comply with this article and also with the applicable provisions of other articles of this Code.
FPN: For application in luminaires, see Article 410.
Table 402.3 Fixture Wires
402.3 Types. Fixture wires shall be of a type listed in Table 402.3, and they shall comply with all equirements of that table. The fixture wires listed in Table 402.3 are all suitable for service at 600 volts, nominal, unless therwise specified.
FPN: Thermoplastic insulation may stiffen at temperatures colder than -10°C (+14°F), requiring that care be exercised during installation at such temperatures. Thermoplastic insulation may also be deformed at normal temperatures where subjected to pressure, requiring that care be exercised during installation and at points of support.
|
Name |
Type Letter |
Insulation |
Thickness of Insulation |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |
|
|
Name |
Type Letter |
Insulation |
AWG mm |
mils |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |
|
Heat-resistant rubber- covered fixture wire — flexible |
FFH-2 |
Heat-resistant rubber Cross-linked synthetic polymer |
18-16 0.76 18-16 0.76 |
30 30 |
Nonmetallic covering |
75°C 167°F |
Fixture wiring |
|
ECTFE — solid or 7- strand |
HF |
Ethylene chlorotri- fluoroethylene |
18-14 0.38 |
15 |
None |
150°C 302°F |
Fixture wiring |
|
ECTFE — flexible stranding |
HFF |
Ethylene chlorotriflu- oroethylene |
18-14 0.38 |
15 |
None |
150°C 302°F |
Fixture wiring |
|
Tape insulated fixture wire — solid or 7-strand |
KF-1 KF-2 |
Aromatic polyimide tape Aromatic polyimide tape |
18-10 0.14 18-10 0.21 |
5.5 8.4 |
None None |
200°C 392°F 200°C 392°F |
Fixture wiring — limited to 300 volts Fixture wiring |
|
Tape insulated fixture wire — flexible stranding |
KFF-1 KFF-2 |
Aromatic polyimide tape Aromatic polyimide tape |
18-10 0.14 18-10 0.21 |
5.5 8.4 |
None None |
200°C 392°F 200°C 392°F |
Fixture wiring — limited to 300 volts Fixture wiring |
(Continues)
Table 4023 Continued
|
Name |
Type Letter |
Insulation |
Thickness of Insulation |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |
|
|
Name |
Type Letter |
Insulation |
AWG mm |
mils |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |
|
Perfluoro- alkoxy — solid or 7-strand (nickel or nickel-coated copper) |
PAF |
Perfluoro- alkoxy |
18-14 0.51 |
20 |
None |
250°C 482°F |
Fixture wiring (nickel or nickel-coated copper) |
|
Perfluoro-alkoxy — flexible stranding |
PAFF |
Perfluoro- alkoxy |
18-14 0.51 |
20 |
None |
150°C 302°F |
Fixture wiring |
|
Fluorinated ethylene propylene fixture wire — solid or 7- strand |
PF |
Fluorinated ethylene propylene |
18-14 0.51 |
20 |
None |
200°C 392°F |
Fixture wiring |
|
Fluorinated ethylene propylene fixture wire — flexible stranding |
PFF |
Fluorinated ethylene propylene |
18-14 0.51 |
20 |
None |
150°C 302°F |
Fixture wiring |
|
Fluorinated ethylene propylene fixture wire — solid or 7- strand |
PGF |
Fluorinated ethylene propylene |
18-14 0.36 |
14 |
Glass braid |
200°C 392°F |
Fixture wiring |
|
Fluorinated ethylene propylene fixture wire — flexible stranding |
PGFF |
Fluorinated ethylene propylene |
18-14 0.36 |
14 |
Glass braid |
150°C 302°F |
Fixture wiring |
|
Extruded polytetraflu- oroethylene — solid or 7- strand (nickel or nickel-coated copper) |
PTF |
Extruded polytetraflu- oroethylene |
18-14 0.51 |
20 |
None |
250°C 482°F |
Fixture wiring (nickel or nickel-coated copper) |
Table 402.3 Continued
|
Name |
Type Letter |
Insulation |
Thickness of Insulation |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |
|
|
Name |
Type Letter |
Insulation |
AWG mm |
mils |
Outer Covering |
Maximum Operating Temperature |
Application Provisions |